Boiler tubes, Boiler steel tubes, Boiler steel pipe

Boiler Tube Standard Specifications

Sunny Steel has an extensive range of boiler and stay tubes available to meet your boiler tube requirements no matter how demanding.

GB

Chinese National standards

GB 3087: Seamless steel tubes for low and medium pressure boiler
GB 5310: Seamless steel tube for high pressure boiler
GB 13296: Seamless steel tubes for boilers and heat exchangers
GB 6479: Seamless steel tubes for high-pressure chemical fertilizer equipment
GB 9948: Seamless steel tubes for petroleum cracking

ASME

American society of mechanical engineers

ASME SA-106: Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service
ASME SA-192M: Seamless Carbon Steel Boiler Tubes for High Pressure
ASME SA-209M: Seamless carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes
ASME SA-210M: Seamless Medium-carbon Steel Boiler and Superheater Tubes
ASME SA-213M: Seamless ferritic and austenitic alloy steel boiler, superheater and heat exchanger tubes
ASME SA178: Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater

ASTM

Chinese National standards

ASTM A213: Seamless ferritic and austenitic alloy steel boiler, superheater and heat exchanger tubes
SA213-T2: ASME SA213 T2 has allowable stresses listed up to 1000F in the ASME Boiler Code.
SA213-T9
SA213-T12: Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes.
SA213-T11: The tubes are used in heat exchangers, super heaters and in boilers.
SA213-T22: ASM T22 Boiler Tube is a high temperature tolerance tube that is used in acidic and corrosive environments such as the hydrochloric processing and in aluminum chloride catalyst involving applications.
ASTM A 106M: Seamless Carbon Steel Pipe for High-Temperature Service
ASTM A192M: Seamless Carbon Steel Boiler Tubes for High Pressure
ASTM A210M: Seamless Medium-carbon Steel Boiler and Superheater Tubes
ASTM A 335M: Seamless ferritic alloy-steel pipe for high-temperature service

EN

Deutsche industrie normen

EN 10216-2 : Seamless steel tubes for pressure purposes

DIN

Deutsche industrie normen

DIN 17175:Seamless Tubes of Heat-resistant Steels - Technical Conditions of Delivery

JIS

Japanese industrial standards

JIS G3461: Carbon steel boiler and heat exchanger tubes
JIS G3462: Alloy steel boiler and heat exchanger tubes
JIS G3463: Stainless Steel for Boiler and Heat Exchanger Tubes

STAINLESS STEELS

– Austenitic stainless steels

SA213-T304:– The SA 213 Tp 304 Material consists of 18% chromium and carbon, manganese, phosphorus, sulfur, silicon and nickel in the composition.
SA213 TP304 is a range of minimum wall thickness pipe series. We supply the SA 213 TP 304 Pipes in different types, shapes and sizes. The SA 213 Tp 304 Material consists of 18% chromium and carbon, manganese, phosphorus, sulfur, silicon and nickel in the composition. There is also the molybdenum, nitrogen, niobium and titanium addition in trace quantities. The SA 213 Tp 304 Density is lower than the ordinary 304 material. It is 7.8 grams per cubic centimeter. We offer ASTM A213 TP 304 for high temperature services. Our 304 Stainless Steel Tube components are of less absolute roughness which means they could be used in high precision equipment and applications.

Austenitic stainless steels are presented in the ASME Boiler and Pressure Vessel Code with two sets of allowable stresses. The reason for this is their relatively low yield strength. The higher allowable stress values were determined at temperatures where the usage would be restricted by the short-time tensile properties.

The higher stresses exceed 62-1/2%, but do not exceed 90% of the yield strength. At these stresses, small amounts of plastic deformation can be expected. These higher stress values are usually used for super-heater and reheater tubing.

The Boiler Code lists maximum allowable stresses for varying temperatures depending on the individual austenitic stainless grade.

Variations of this 18 chromium, 8 nickel grade include 304L, 304LN, 304H and 304N. Each of these offers excellent corrosion and oxidation resistance along with high strength.
High strengths are maintained in the low carbon grades by controlling the nitrogen content.

T304 has higher carbon and a minimum solution annealing temperature to assure good long-time elevated temperature strengths. T304 grades are limited to 1650F under oxidizing conditions. Section I of the ASME Boiler Code lists allowable stresses up to 1500F.
SA213-T316: – SA213 TP316 Tube is a material standard for heat exchanger tubes that are made from 316 austenitic stainless steel.
The chromium nickel alloy also has molybdenum in its composition which makes it more corrosion resistant and heat resistant than the 304 material. ASME SA213 TP316 is the second most used pipe material in the world next to the 304 material. ASTM A213 TP316 Tube is an austenitic stainless steel but the 213 standard covers both the austenitic and ferritic steels.

Sunny Steel is a supplier of ASTM A213 Grade TP316 products in different standards and sizes. Our 316 Stainless Steel Tube can come with different finishing such as the 316 Stainless Steel Tubing Polished or electropolished. We also provide the pipes in different shapes such the round, rectangular or Stainless Steel 316 Square Tube. The square and 316 Stainless Steel Rectangular Tube is usually used in high pressure applications to withstand the pressure stress at change of directions. The Stainless Steel 316 Seamless Tube is more accurate in dimensions and therefore it is used in high precision applications. Our 316 Stainless Steel Exhaust Tubing is of high quality and can withstand high temperatures; it is used in exhausts, heat exchangers and super heaters. The 316 Stainless Steel Heavy Wall Tubing is used in high pressure applications such as hydraulic systems. Our SS 316 Welded Tube is easy to weld upon. We supply 316 Stainless Steel Welded Tube for affordable prices in different sizes and schedules. Please contact us for further details and pricing.
SA213-TP321 & 347– SA213 TP321 is a specification of heat exchanger tubes that are made from the 321 austenitic stainless steel.
SA213 TP321 is a specification of heat exchanger tubes that are made from the 321 austenitic stainless steel. The SA 213 specifies pipe products for heat exchangers in different material grades, both the ferritic and austenitic steels.

Sunny Steel is a supplier of all kinds of stainless steel pipes. The SA213 Tp321 Material is special in that the composition includes titanium which reduces the density of the ASME SA213 Tp321 and therefore making it lightweight.

T321 and 347 are variations of T304 and have comparable minimum tensile properties. These two grades are stabilized with additions of titanium and columbian respectively, along with proper heat treatment.

To insure good long-time strength at elevated temperatures, T321H and 347H-like 304H-were developed with higher carbon contents and specified minimum solution annealing temperatures.

Of all the stainless steels, T309 (25 chromium, 13 nickel) and T310 (25 chromium, 20 nickel) offer the maximum resistance to oxidation and corrosion. They also offer good high-temperature properties. Since these steels contain ferrite, however, they are more susceptible to sigma phase.

Tube OD	26.7 - 114.3 mm
Tube WT	3.2 - 12.5 mm
Tube lengths	4 - 13 meters
Deburring angle, a	30°+ 5 and 37°± 2.5
Dimension, c	1.6 ± 0.8 mm

Steel Grade	Standard	Application
GB(China)	ASME（USA）	DIN/EN(Euro)
Carbon steel	10 20 20G 20MnG 25MnG	SA-106B SA-192 SA-210A1 SA106C SA-210C	PH265GH P195GH P235GH St35.8 St45.8	Economizer tube Water wall tube
Mo steel	15MoG 20MoG	SA-209 T1 SA-209 T1a SA-209 T1b	15Mo3 16Mo3	Water wall tube Superheater tube Reheater tube
Cr-Mo Steel	12CrMoG 12Cr2MoG 12Cr1MoVG 15CrMoG 10Cr9MoVNb	SA-213 T11 SA-213 T22 SA-213 T24 SA-213 T91 A335 P1 A335 P2 A335 P5 A335P9 A335 P11	12Cr1MoV 14MoV63 10CrMo910 X10CrMoVNb91 10CrMo5-5, 13CrMo4-5	Superheater tube Reheater tube
Cr-Mo-W steel	12Cr2MoWVTiB	SA-213 T23 SA-214 T911 SA-213 T92 SA-213 T122 A335 P23 A335 P911 A335 P92 A335 P122	---	Superheater tube Reheater tube
Austentic Stainless steel	---	AP304 TP304H TP321 TP321H TP347 TP347H TP316 TP316H S30432 TP310HCbN	---	Superheater tube Reheater tube

U bend tube

Special type of Finned Tube

Ultrasonic inspection

pipes for high temperature

Size range, tolerance and specifications

Tubes are processed by cold drawn, heat treated and pickling finishes, cleaning and smooth surface inside and outside should be made, quality tubes have the capacity of standing in high pressure and high temperature conditions.

Tolerances on out diameter

Standard	Out diameter (mm)	Tolerance	Out diameter (mm)	Tolerance
Standard	Hot finished seamless tube		Cold flnished seamless tube
EN10216-1 EN10216-2 DIN17175	≤100	+/-0.75% (min.+/-0.5mm)	All	+/-0.5% (min. +/-0.30mm)
EN10216-1 EN10216-2 DIN17175	>100	+/-0.90%	All	+/-0.5% (min. +/-0.30mm)
GB/T 3087	≤460	+/-0.75% (min.+/-0.5mm)	10-30	+/-0.40mm
			>30-50	+/-0.45mm
			>50	+/-1.0%
GB/T 5310 GB/T 9948 GB/T 6479	<57	+/-0.40mm	≤30	+/-0.20mm
	57-325	+/-0.75%	>30-50	+/-0.30mm
	>325-460	+1%,-2mm	>50	+/-0.8%
ASME SA-179M ASME SA-192M ASME SA-209M ASME SA-210M ASME SA-213M JIS G 3461 JIS G 3461	≤101.6	+0.4, -0.8mm	<25.4	+/-0.10mm
			>25.4-38.1	+/-0.15mm
			>38.1-50.8	+/-0.20mm
	101.6-190.5	+0.4, -1.2mm	>50.8-63.5	+/-0.25mm
			>63.5-76.2	+/-0.30mm
			>76.2	+/-0.38mm
ASME SA106 ASME SA335	≤48.3	+/-0.40mm	≤48.3	+/-0.40mm
	48.3-114.3	+/-0.79mm
	114.4-219.1	+1.59, -0.79mm
	219.2-323.9	+2.38, -0.79mm	>48.3	+/-0.79mm
	>324	+/-1.0%	>48.3	+/-0.79mm

Tolerances on wall thickness

Standard	Out diameter OD(mm)	Wall thickness T(mm)	Tolerance	Out diameter (mm)	Wall Thickness T(mm)	Tolerance
Standard	Hot finished seamless tube			Cold flnished seamless tube
DIN17175	≤130	S≤2Sn	+15%, -10%	--	All	+/-10% (min. +/-0.2mm)
		2Sn<S≤4Sn	+12.5%, -10%
		S>4Sn	+-/9%
	>130	S≤0.05da	+17.5%, -12.5%
		0.05da<S≤0.11da	+/-12.5%
		S>0.11da	+/-10%
EN 10216-1 EN 10216-2	≤219.1	-	+/-12.5% (min.+/-0.4mm)
	--	T/D≤0.025	+/-20%
		0.025<T/D≤0.050	+/-15%
		0.05<T/D≤0.10	+/-12.5%
		0.1<T/D	+/-10%
GB/T 3087	--	≤20	+15%,-12.5% (min.+0.45, -0.35mm)	--	1.0-3.0	+15%, -10%
GB/T 3087	--	>20	+/-12.5%	--	>3	+12.5%, -10%
GB/T 5310 GB/T 9948 GB/T 6479	--	<4.0	+15%,-10% (min.+0.48, -0.32mm)	--	2-3	+12%,-10%
		4-20	+12.5%,-10%		>3	+/-10%
		>20	+/-10%		>3	+/-10%
ASME SA-179M ASME SA-192M ASME SA-209M ASME SA-210M ASME SA-231M JIS G 3461 JIS G 3462	--	2.41-3.8	+35%, -0%	≤38.1	--	+20%,-0%
		3.8-4.6	+33%,-0%	>38.1	--	22%,-0%
		>4.6	+28%,-0%	--	--	--
ASME SA-106 ASME SA-335	--	All	+/12.5%		All	+/-10%

Available size range of boiler tube

Boiler pipe size range complied with the different ASTM standard required. Like ASTM A106 or ASTM 179, 192 etc.

Straightness of boiler tubes :

Allowed straightness is 0.0015 multiple of the tube length, for 1 meter length the allowed straightness is 3 millimeters.

Seamless boiler tubes surface protection: While ordering, it is necessary to agree upon the method and means of temporarily protecting the surface of the tubes during transportation and storage.

Size	Wall Thickness(mm)
O.D.(mm)	2	2.5	3	3.5	4	4.5	5	6	6.5-7	7.5-8	8.5-9	9.5-10	11	12
Φ25-Φ28	●	●	●	●	●	●
Φ32		●	●	●	●	●	●
Φ34-Φ36		●	●	●	●	●	●
Φ38		●	●	●	●	●	●
Φ40			●	●	●	●	●
Φ42			●	●	●	●	●
Φ45			●	●	●	●	●	●
Φ48-Φ60			●	●	●	●	●	●	●
Φ63.5				●	●	●	●	●	●	●
Φ68-Φ73					●	●	●	●	●	●
Φ76					●	●	●	●	●	●	●	●	●	●
Φ80					●	●	●	●	●	●	●	●	●	●
Φ83					●	●	●	●	●	●	●	●	●	●
Φ89					●	●	●	●	●	●	●	●	●	●
Φ95					●	●	●	●	●	●	●	●	●	●
Φ102					●	●	●	●	●	●	●	●	●	●
Φ108					●	●	●	●	●	●	●	●	●	●
Φ114						●	●	●	●	●	●	●	●	●
Φ121						●	●	●	●	●	●	●	●	●
Φ127						●	●	●	●	●	●	●	●	●

Chemical & Mechanical properties of available steel grades

Checial composition

Standard	Steel Grade	C	Si	Mn	S	P	Cr	Mo	V	Ti	B	W	Ni	Al	Nb	N	Others
GB 3087	10	0.07-0.13	0.17-0.37	0.35-0.65	0.020	0.025	≤0.15
GB 3087	20	0.17-0.23	0.17-0.37	0.35-0.65	0.020	0.025	≤0.25
DIN 17175	St 35.8	≤0.17	0.10-0.35	0.40-0.80	0.020	0.025
	St 45.8	≤0.21	0.10-0.35	0.40-1.20	0.020	0.025
	15Mo3	0.12-0.20	0.10-0.35	0.40-0.80	0.020	0.025		0.25-0.35
	13CrMo44	0.10-0.18	0.10-0.35	0.40-0.70	0.020	0.025	0.70-1.10	0.45-0.65
	10CrMo910	0.08-0.15	≤0.50	0.40-0.70	0.020	0.025	2.00-2.50	0.90-1.20
	14MoV63	0.10-0.18	0.10-0.35	0.40-0.70	0.020	0.025	0.30-0.60	0.50-0.70	0.22-0.32
	12Cr1MoV	0.08-0.15	0.17-0.37	0.40-0.70	0.020	0.025	0.90-1.20	0.25-0.35	0.15-0.30
GB5310	20G	0.17-0.23	0.17-0.37	0.35-0.65	0.015	0.025
	20 MnG	0.17-0.24	0.17-0.37	0.70-1.00	0.015	0.025
	25 MnG	0.22-0.27	0.17-0.37	0.70-1.00	0.015	0.025
	15 MoG	0.12-0.20	0.17-0.37	0.40-0.80	0.015	0.025		0.25-0.35
	20 MoG	0.15-0.25	0.17-0.37	0.40-0.80	0.015	0.025		0.44-0.65
	12CrMoG	0.08-0.15	0.17-0.37	0.40-0.70	0.015	0.025	0.40-0.70	0.40-0.55
	15CrMoG	0.12-0.18	0.17-0.37	0.40-0.70	0.015	0.025	0.80-1.10	0.40-0.55
	12Cr2MoG	0.08-0.15	≤0.60	0.40-0.60	0.015	0.025	2.00-2.50	0.90-1.13
	12Cr1MoVG	0.08-0.15	0.17-0.37	0.40-0.70	0.010	0.025	0.90-1.20	0.25-0.35	0.15-0.30
	12Cr2MoWVTiB	0.08-0.15	0.45-0.75	0.45-0.65	0.015	0.025	1.60-2.10	0.50-0.65	0.28-0.42	0.08-0.18	0.002-0.008	0.30-0.55
	10Cr9Mo1VNbN	0.08-0.12	0.20-0.50	0.30-0.60	0.010	0.020	8.00-9.50	0.85-1.05	0.18-0.25				≤0.040	≤0.040	0.06-0.10	0.03-0.07
	07Cr19Ni10	0.04-0.10	≤0.75	≤2.0	0.015	0.035	17.00-20.00		8.00-11.00
	07Cr18Ni11Nb	0.04-0.10	≤0.75	≤2.0	0.150	0.030	17.00-19.00						9.00-13.00	8C-1.10
ASTMA 106 ASME SA-106M	A 106B SA-106B	≤0.30	≥0.10	0.29-1.06	0.020	0.025
ASTMA 106 ASME SA-106M	A 106C SA-106C	≤0.35	≥0.10	0.29-1.06	0.020	0.025
ASTM A192 ASME SA-192M	SA 192 SA-192	0.06-0.18	≤0.25	0.27-0.63	0.020	0.025
ASTM A209 ASME SA-209M	A209T1 SA-209T1	0.10-0.20	0.10-0.50	0.30-0.80	0.020	0.025		0.44-0.65
	A209T1b SA-209T1b	≤0.14	0.10-0.50	0.30-0.80	0.020	0.025		0.44-0.65
	A209T1a SA-209T1a	0.15-0.25	0.10-0.50	0.30-0.80	0.020	0.025		0.44-0.65
ASTM A210 ASME SA-210M	A 210A1 SA-210A1	≤0.27	≥0.10	≤0.93	0.020	0.025
ASTM A210 ASME SA-210M	A 210C SA-210C	≤0.35	≥0.10	0.29-1.06	0.020	0.025
ASTM A213 ASME SA-213M	A 213 T2 SA-213 T2	0.10-0.20	0.10-0.30	0.30-0.61	0.020	0.025	0.50-1.81	0.44-0.65
	A 213 T11 SA-213 T11	0.05-0.15	0.50-1.00	0.30-0.60	0.020	0.025	1.00-1.50	0.44-0.65
	A 213 T12 SA-213 T12	≤0.15	≤0.50	0.30-0.61	0.020	0.025	0.80-1.25	0.44-0.65
	A 213 T22 SA-213 T22	0.05-0.15	≤0.50	0.30-0.60	0.020	0.025	1.90-2.60	0.87-1.13
	A 213 T23 SA-213 T23	0.04-0.10	≤0.50	0.10-0.60	0.010	0.025	1.90-2.60	0.05-0.30	0.20-0.30	0.005-0.06	0.0005-0.006	1.45-1.75		≤0.03	0.02-0.08	≤0.03	Ti/N≥3.5
	A 213 T24 SA-213 T24	0.05-0.10	0.15-0.45	0.30-0.70	0.020	0.025	2.20-2.60	0.70-1.10	0.20-0.30	0.06-0.10	0.0015-0.0020			≤0.02		≤0.012
	A 213 T91 SA-213 T91	0.08-0.12	0.20-0.50	0.30-0.60	0.010	0.020	8.00-9.50	0.85-1.05	0.18-0.25				≤0.40	≤0.40	0.06-0.10	0.03-0.07
	A 213 T911 SA-213 T911	0.09-0.13	0.10-0.50	0.30-0.60	0.020	0.025	8.50-10.50	0.90-1.10	0.18-0.25		0.0003-0.006	0.90-1.10	≤0.40	≤0.40	0.06-0.10	0.04-0.09
	A 213 T92 SA-213 T92	0.07-0.13	≤0.5	0.3-0.6	0.010	0.020	8.50-9.50	0.30-0.60	0.15-0.25		0.001-0.006	1.50-2.00	≤0.4	≤0.4	0.04-0.09	0.03-0.07
	A 213 T122 SA-213 T122	0.07-0.14	≤0.5	≤0.70	0.010	0.020	10.00-12.50	0.25-0.60	0.15-0.30		0.0005-0.005	1.50-2.50	≤0.5	≤0.4	0.040-0.10	0.040-0.100
	TP304H	0.04-0.10	≤0.75	≤2.0	0.030	0.040	18.00-20.00						8.00-11.000
	TP321H	0.04-0.10	≤0.75	≤2.0	0.030	0.040	17.00-20.00			4*C%-0.60			9.00-13.00
	TP347H	0.04-0.10	≤0.75	≤2.0	0.030	0.040	17.00-20.00						9.00-13.00				Nb+Ta≥8*C%-1.00
	S30432	0.07-0.13	≤0.30	≤1.0	0.040	0.010	17.00-20.00				0.001-0.010		7.5-10.5	0.003-0.030	0.30-0.60	0.05-0.12	Cu 2.50-3.50
	TP310HCbN	0.04-0.10	≤0.75	≤2.0	0.030	0.030	24.00-26.00						17.0-23.0		0.20-0.60	0.15-0.35
EN10216-2	P195GH	≤0.13	≤0.35	≤0.70	0.020	0.025	≤0.30	≤0.08	≤0.02	≤0.040			≤0.30	≥0.02	≤0.01		Cr+Cu+Mo+Ni≤ 0.70
	P235GH	≤0.16	≤0.35	≤1.20	0.020	0.025	≤0.30	≤0.08	≤0.02	≤0.040			≤0.30	≥0.02	≤0.01		Cr+Cu+Mo+Ni≤ 0.70
	P265GH	≤0.20	≤0.40	≤1.40	0.020	0.025	≤0.30	≤0.08	≤0.02	≤0.040			≤0.30	≥0.02	≤0.01		Cr+Cu+Mo+Ni≤ 0.70
	16Mo3	0.12-0.20	≤0.35	0.40-0.90	0.020	0.025	≤0.30	0.25-0.35					≤0.30	≤0.04			Cu≤ 0.30
	10CrMo5-5	≤0.15	0.50-1.00	0.30-0.60	0.020	0.025	1.00-1.50	0.45-0.65					≤0.30	≤0.04			Cu≤ 0.30
	13CrMo4-5	0.10-0.70	≤0.35	0.40-0.70	0.020	0.025	0.70-1.15	0.40-0.60					≤0.30	≤0.04			Cu≤ 0.30
	10CrMo9-10	0.08-0.14	≤0.50	0.30-0.70	0.020	0.025	2.00-2.50	0.90-1.10					≤0.30	≤0.04			Cu≤ 0.30
	X10CrMoVNb9-1	0.08-0.12	0.20-0.50	0.30-0.60	0.010	0.020	8.00-9.50	0.85-1.05	0.18-0.25				≤0.40	≤0.04	0.06-0.10	0.03-0.07	Cu≤ 0.30
JIS G3461	STB 340	≤0.18	≤0.35	0.30-0.60	0.020	0.025
	STB 410	≤0.32	≤0.35	0.30-0.80	0.020	0.025
	STB 510	≤0.25	≤0.35	1.00-1.50	0.020	0.025
JIS G3462	STAB 12	0.10-0.20	0.10-0.50	0.30-0.80	0.020	0.025		0.45-0.65
	STAB 13	0.15-0.25	0.10-0.50	0.30-0.80	0.020	0.025		0.45-0.65
	STAB 20	0.10-0.20	0.10-0.50	0.30-0.80	0.020	0.025		0.45-0.65
	STAB 22	≤0.15	≤0.50	0.30-0.60	0.020	0.025	0.80-1.25	0.45-0.65
	STAB 23	≤0.15	0.50-1.00	0.30-0.60	0.020	0.025	1.00-1.25	0.45-0.65
	STAB 24	≤0.15	≤0.50	0.30-0.60	0.020	0.025	1.90-2.60	0.87-1.13
	STAB 26	≤0.15	0.25-1.00	0.30-0.60	0.020	0.025	8.00-10.0	0.90-1.10
JIS G3463	SUS304HTB	0.04-0.10	≤2.00	≤0.75	0.020	0.025	18.00-20.00						8.00-11.000
JIS G3463	SUS321HTB	0.04-0.10	≤2.00	≤0.75	0.020	0.025	17.00-20.00			4*C%-0.60			9.00-13.00
GB 13296	0Cr18Ni9	0.07	≤1.00	≤2.00	0.030	0.035	17.00-19.00						8.00-11.00
	1Cr18Ni9	≤0.15	≤1.00	≤2.00	0.030	0.035	17.00-19.00						8.00-11.00
	00Cr19Ni10	≤0.03	≤1.00	≤2.00	0.030	0.035	18.00-20.00						8.00-12.00
	2Cr23Ni13	≤0.20	≤1.00	≤2.00	0.030	0.035	22.00-24.00						12.00-15.00
	0Cr23Ni13	≤0.08	≤1.00	≤2.00	0.030	0.035	22.00-24.00						12.00-15.00
	2Cr25Ni20	≤0.25	≤1.00	≤2.00	0.030	0.035	22.00-24.00						19.00-22.00
	0Cr25Ni20	≤0.08	≤1.00	≤2.00	0.030	0.035	24.00-26.00						19.00-22.00
	0Cr17Ni12Mo2	≤0.08	≤1.00	≤2.00	0.030	0.035	16.00-18.50	2.00-3.00					10.00-14.00
	1Cr17Ni12Mo2	0.04-0.1	≤0.75	≤2.00	0.030	0.035	16.00-18.00	2.00-3.00					11.00-14.00
	00Cr17Ni14Mo2	≤0.03	≤1.00	≤2.00	0.030	0.035	16.00-18.00	2.00-3.00					12.00-15.00
	0Cr19Ni13Mo3	≤0.08	≤1.00	≤2.00	0.030	0.035	18.00-20.00	3.00-4.00					11.00-15.00
	00Cr19Ni13Mo3	≤0.03	≤1.00	≤2.00	0.030	0.035	18.00-20.00	3.00-4.00					11.00-15.00
	1Cr18Ni9Ti	0.04-0.1	≤1.00	≤2.00	0.030	0.035	17.00-19.00			5*(C-0.02)-0.80			8.00-11.00
	0Cr18Ni10Ti	≤0.08	≤1.00	≤2.00	0.030	0.035	17.00-19.00			≥5*C			9.00-12.00
	1Cr18Ni11Ti	0.04-0.1	≤1.00	≤2.00	0.030	0.035	17.00-20.00			4*C-0.60			9.00-13.00
	0Cr18Ni11Nb	≤0.08	≤1.00	≤2.00	0.030	0.035	17.00-19.00						9.00-13.00
	1Cr19Ni11Nb	0.04-0.1	≤1.00	≤2.00	0.030	0.035	17.00-20.00						9.00-13.00
	0Cr18ni13Si4	≤0.08	≤1.00	≤2.00	0.030	0.035	15.00-20.00						11.00-15.00
	0Cr18Ni12Mo2Ti	≤0.08	≤1.00	≤2.00	0.030	0.035	16.00-19.00	1.80-2.50		5*C-0.70			11.00-14.00
	1Cr18Ni12Mo2Ti	≤0.12	≤1.00	≤2.00	0.030	0.035	16.00-19.00	1.80-2.50		5*(C-0.02)-0.80			11.00-14.00
	1Cr18Ni12Mo3Ti	≤0.12	≤1.00	≤2.00	0.030	0.035	16.00-19.00	2.50-3.50		5*(C-0.02)-0.80			11.00-14.00
	0Cr18Ni12Mo3Ti	≤0.08	≤1.00	≤2.00	0.030	0.035	16.00-19.00	2.50-3.50		5*C-0.70			11.00-14.00

Note: Grades other than the a.m. chart can be made available through consultations.

Mechanical properties

Standard	Grade	Tensile strength (Mpa)	Yield point(Mpa) not less than	Elongation(%) not less than	Impact(J) not less than	Hardness not less than
GB 3087	10	335-475	205(T<16mm） 195(t≥16mm)	24	"	"
GB 3087	20	392-588	245(T<16mm） 235(t≥16mm)	20	"	"
DIN 17175	St35.8	360-480	235(T<16mm） 225(t≥16mm)	25	"	"
	St45.8	410-530	255(T<16mm） 245(t≥16mm)	21	"	"
	15Mo3	456-600	270	22	"	"
	13CrMo44	440-590	290	22	"	"
	10CrMo910	450-600	280	20	"	"
	14MoV63	460-610	320	20	55	"
	12Cr1MoV	470-640	255	21	41	"
GB 5310	20G	410-550	245	24/22	40/27	"
	25MnG	485-640	275	20/18	40/27	"
	15MoG	450-600	270	22/20	40/27	"
	20MoG	415-665	220	22/20	40/27	"
	12CrMoG	410-560	205	21/19	40/27	"
	12 Cr2MoG	450-600	280	22/20	40/27	"
	12 Cr1MoVG	470-640	255	21/19	40/27	"
	12Cr2MoWVTiB	540-735	345	18	40/27	"
	10Cr9Mo1VNb	≥585	415	20	40	"
	1Cr18Ni9	≥520	206	35		"
	1Cr19Ni11Nb	≥520	206	35		"
ASTM A106 ASME SA-106M	A106B/SA-106B	≥415	240	30	"	"
ASTM A106 ASME SA-106M	A 106C/SA-106C	≥485	275	30	"
ASTM A192 ASME SA-192M	A192/SA-192	≥325	180	35	"	77HRB
ASTM A209 ASME SA-209M	A 209T1/SA-209 T1	≥380	205		"	80HRB
	A 209T1b/SA-209T1b	≥365	195		"	77HRB
	A209T1a/SA-209T1a	≥415	220		"	81HRB
ASTM A210 ASME SA-210M	A210 A1/ SA-210A1	≥415	255		"	79HRB
ASTM A210 ASME SA-210M	A210C/ SA-210C	≥485	275		"	89HRB
ASTM A213 ASME SA-213M	A213 T2/SA213 T2	≥415	205		"	85HRB
	A213 T11/SA213 T11	≥415	205		"	85HRB
	A213 T22/SA213 T22	≥415	205		"	85HRB
	A213 T23/SA213 T23	≥510	400	20	"	97HRB
	A213 T24/SA213 T24	≥585	415	20	"	25HRB
	A213 T91/SA213 T91	≥585	415	20	"	25HRB
	A213 T911/SA213 T911	≥620	440	20	"	25HRB
	A213 T22/SA213 T92	≥620	440	20	"	25HRB
	A213 T122/SA213 T122	≥620	400	20		25HRB
	TP304H	≥515	205	35		90HRB
	TP316H	≥515	205	35		90HRB
	TP321H	≥515	205	35		90HRB
	TP347H	≥515	205	35		90HRB
	S30432	≥590	235	35		95HRB
	TP310HCbN	≥655	295	30		100HRB
EN 10216-2	P195GH	320-440	195	27
	P235GH	360-500	235	25
	P265GH	410-570	265	23
	16Mo3	450-600	280	22
	10CrMo5-5	410-560	275	22
	13CrMo4-5	440-590	290	22
	10CrMo9-10	480-630	280	22
	X10CrMoVBb9-1	630-830	450	19	41
JIS G 3461	STB 340	≥340	175	35
	STB 410	≥410	255	25
	STB 510	≥510	295	25
JIS G 3462	STBA 12	≥382	175	35
	STBA 13	≥412	255	25
	STBA 20	≥412	295	25
	STBA 22	≥412	206
	STBA 23	≥412	206
	STBA 24	≥412	206
	STBA 26	≥412	206
	STBA 19	≥412	206
JIS G 3463	SUS 304HTB	≥520	206
	SUS 316HTB	≥520	206
	SUS 321HTB	≥520	206
	SUS 347HIB	≥520	206
GB 13296	0Cr18Ni9	≥520	205	35
	1Cr18Ni9	≥520	205	35
	00Cr19Ni10	≥480	175	35
	2Cr23Ni13	≥520	205	35
	0Cr23Ni13	≥520	205	35
	2Cr25Ni20	≥520	205	35
	0Cr25Ni20	≥520	205	35
	0Cr17Ni12Mo2	≥520	205	35
	1Cr17Ni12Mo2	≥520	205	35
	00Cr17Ni14Mo2	≥480	175	40
	0Cr19Ni13Mo3	≥520	205	35
	00Cr19Ni13Mo3	≥480	175	35
	1Cr18Ni9Ti	≥520	205	40
	0Cr18Ni10Ti	≥520	205	35
	1Cr18Ni11Ti	≥520	205	35
	0Cr18Ni11Nb	≥520	205	35
	1Cr19Ni11Nb	≥520	205	35
	0Cr18ni13Si4	≥520	205	35
	0Cr18Ni12Mo2Ti	≥530	205	35
	1Cr18Ni12Mo2Ti	≥540	215	35
	1Cr18Ni12Mo3Ti	≥530	205	35
	0Cr18Ni12Mo3Ti	≥540	215	35

Boiler tubing is used in these industries

Sunny steel are instrumental in offering our clients with a wide range of Boiler Tubes that is used in varied industrial applications. We also undertake customization of these tubes to meet the specific requirements of our clients. These Boiler Tubes are known for their resistance to corrosion and tolerance for withstanding temperature variations.

Boiler tubing is used in these industries:

Steam Boilers
Power Generation
Fossil Fuel Plants
Electric Power Plants
Industrial Processing Plants
Cogeneration Facilities

Boiler tubes need to withstand high pressure and temperature.

Fin tube

Heat exchange tube

ASTM A213 T5b Seamless alloy tube

ASTM 178, Grade D Heat Exchanger Tube

Overview of standards and types of boiler pipes

You are looking for boiler pipes with different specifications?

DIN 17175	EN 10216-2	ASTM A335
St 35.8, I + III	P 235 GH, 1 + 2	P5
15 Mo 3	16 Mo 3	P 11
13 CrMo 44	13 CrMo 4-5	P22
10 CrMo 910	10 CrMo 9-10	P9
X 10 CrMo VNb 9-1	X 10 CrMo VNb 9-1	P91
X 20 CrMo V 12-1	X 20 CrMo V 11-1

Carbon steel for water distribution for temperature 0° - 100°C

EN - DIN	WNr	AISI/ Tradename	ASTM - UNS	Pipe seamless	Pipe welded
P235TR1	1.0254	-	-	A/ SA53B	A/ SA53B
P235TR1	1.0254	-	-	EN10216-1	EN10217-1

Carbon steel for temperature -20° - 400°C for pressure application

EN - DIN	WNr	AISI/ Tradename	ASTM - UNS	Pipe seamless	Pipe welded
P235GH	1.0345	-	-	A/ SA106 Gr B/ A	A/ SA672 B65
				EN10216-2	EN10217-2/ -5
P265GH	1.0425	-	-	A/ SA106 Gr C/ A	A/ SA672 BB70
				EN10216-2	EN10217-2/ -5
P355N/ NH	1.0562/ 1.0565	-	-	API 5L X52	API 5L X52
				EN10216-3	EN10217-3
P460N/ NH	1.8905/ 1.8935	-	-	API 5L X65	API 5L X65
				EN10216-3	EN10217-3

Low Alloy steel and Alloy Steel for temperature 0° to 650°C for pressure application

EN - DIN	WNr	AISI/ Tradename	ASTM - UNS	Pipe seamless	Pipe welded
16Mo3	1.5415	-	-	A/ SA335 P1	A/ SA691 1CR
				EN10216-2	EN10217-5
X11CrMo5-1	1.7362	-	-	A/ SA335 P5	A/ SA691 5CR
				EN10216-2	EN10217-5
X11CrMo9-1	1.7386	-	-	A/ SA335 P9	A/ SA691 9CR
				EN10216-2	EN10217-5
13CrMo4-5	1.7335	-	-	A/ SA335 P11	A/ SA691 1 1/4CR
				EN10216-2	EN10217-5
10CrMo9-10	1.7380	-	-	A/ SA335 P22	A/ SA691 2 1/4CR
				EN10216-2	EN10217-5
X10CrMoVNb9-1	1.4903	-	-	A/ SA335 P91	A/ SA691 91CR
				EN10216-2	EN10217-5
X10CrWMoVNb9-2	1.4901	-	-	A/ SA335 P92	A/ SA691 92CR
				EN10216-2	EN10217-5

Low temperature carbon steel for pressure purpose and low temp up to -50°C

EN - DIN	WNr	AISI/ Tradename	ASTM - UNS	Pipe seamless	Pipe welded
P215NL	1.0451	-	-	A/ SA333 Gr1/ Gr6	A/ SA671CC60/70
				EN10216-4	EN10217-4
P255QL	1.0452	-	-	A/ SA333 Gr1/ Gr6	A/ SA671CC60/70
				EN10216-4	EN10217-4
P265NL	1.0453	-	-	A/ SA333 Gr1/ Gr6	A/ SA671CC60/70
				EN10216-4	EN10217-4
P355NL1/ NL2	1.0566	-	-	A/ SA333 Gr6	A/ SA671CC60/70 A/ SA333 Gr6
				EN10216-3	EN10217-3

Low temperature Nickel Steel for pressure purpose and low temp up to -196°C

EN - DIN	WNr	AISI/ Tradename	ASTM - UNS	Pipe seamless	Pipe welded
X10Ni9/ X8Ni9	1.5682/ 1.5662	-	-	A/ SA333 Gr. 8	A/ SA671C100/ CH100
				EN10216-4	EN10217-4
12Ni14	1.5637	-	-	A/ SA333 Gr3	A/ SA671CF66
				EN10216-4	EN10217-4

Sunny Steel’s state-of-the-art manufacturing processes and advanced inspection and testing procedures ensure our boiler tube stand up to the harsh environments.

Boiler tube FAQs

Boiler tubes are used in fire-tube boiler, a type of boiler in which hot gases from a fire pass through one or more tubes running through a sealed container of water.

How to get rid of surface stains of cracking tube

How to get rid of surface stains of cracking tube follow the steps below:

The first step is to clean, we must first petroleum cracking tube surface oil, dirt, grease, and some other substances removed. The second step is naturally acid, generally speaking, there are two pickling treatment, a chemical treatment, another treatment method is electrolysis, which can be handled in two ways petroleum cracking tube surface cleaning clean, but chemical pickling is a pipeline anti-corrosion measures.

The third step is necessary to use the tool to the surface of the oil cracking pipe polished, although the effect may not be very good polish, but this procedure is also indispensable. The final step is to make the surface of petroleum cracking tube jet, one can remove some of the dirt, the second is to make the roughness of petroleum cracking tube more evenly.

For petroleum cracking tube defects formed on the surface there are many, but certainly there are a lot of different reasons, the specific form of the crack is different, often found defective for its appearance on petroleum cracking tube we can see, the main reason for its main form by the following points. In fact, for the production process, the emergence of various drying phenomena of its raw materials for steelmaking summer rainy season or when it will produce up to steel gas content's sake.

In the process, the ingot when heated due to heating of the air bubbles are burned through, it will have more cracks after the rolling, which will meet the petroleum cracking tube relatively thin, dense and sizes, its length ranging from cracks, these things collectively referred to as hairline, this is a defect. So the cause of the surface oil cracking tube defects are many, so we have to remedy. After oil cracking pipe handling, appearance becomes smoother, more beautiful. Although after the rust will not affect the use again, but if we do the work in advance, so do not bother it. We buy petroleum cracking tube among the first to note that it is not a strong corrosion resistance, have a longer life does not have to select a high-quality petroleum cracking pipe products that can reduce our future work a lot of trouble.

Characteristics of boiler pipe

Small diameter high-pressure boiler tube surface defects that affect the quality, mainly due to waste generation.

Boiler pipes often in high temperature and high pressure work, pipe smoke and water at high temperature steam oxidation and corrosion effects will occur, thus requiring durable steel with high strength, high oxidation resistance, and good organizational stability, high pressure boiler tube in addition to chemical composition and mechanical properties, hydrostatic testing done by the root, to be flaring, flattening test. Steel to heat treatment delivery. In addition, the finished steel microstructure, grain size, there are certain requirements decarburization.

High-pressure boiler tubes are seamless steel pipe categories. Seamless same manufacturing method, but used in the manufacture of steel pipe, there are strict requirements. Often in high-pressure boiler tubes at high temperature and pressure conditions of use, the tube under the effect of high temperature gas and water vapor, oxidation and corrosion will occur. Require durable steel with high strength, high resistance to oxidation corrosion, and have good organizational stability.

High-pressure boiler tube is mainly used to manufacture high-pressure and high pressure boiler superheater tubes, reheater tubes, windpipe, the main steam pipe. High-pressure boiler tubes for low and medium pressure boiler (working pressure is generally not more than 5.88Mpa, working temperature below 450 ℃) of heating surface tubes; used for high-pressure boilers (above 9.8Mpa working pressure in general, the working temperature of 450 ℃ ~ 650 ℃ between) the heating surface tubes, economizer, superheater, reheater, petrochemical industrial pipe.

Hardness testing methods of high-pressure boiler tubes

High pressure boiler tube hardness testing should take into account its mechanical properties, which is related to stainless steel as raw material for the deformation, such as punching, cutting processing performance and quality.

Therefore, all of the high-pressure boiler tubes need to conduct mechanical tests. Mechanical performance testing method is mainly divided into two kinds, one kind is tensile test, the other kind is usually hardness test.

Tensile test is the high pressure boiler tube sample, high pressure boiler tube tend to sample to the fracture on tensile testing machine, mechanical properties and determination of one or more, usually only determination of tensile strength, yield strength, break elongation, and reduction of area. Tensile test is the most basic mechanical properties of metallic materials testing methods, almost all of the metal material, as long as the requirements of the mechanical properties of the high pressure boiler tube, the provisions of the tensile test. Especially those appearance and high pressure boiler tube is not good for the material of hardness test, tensile test became the only means of mechanical properties testing.

Steam boilers

A steam boiler is a device used to create steam by applying heat energy to water.

High Frequency Resistance Welding

A continuous helical fin is attached to the base tube by high frequency electric resistance welding in order to give an efficient and thermally reliable bond. Fins can be either solid or serrated (segmented). The weld produced in this process is a true forge, blacksmith weld. This type of weld is comprised of a fusion between two portions of parent metal without the introduction of a filler material. The weld is simply produced by heating the interfaces to be joined to a plastic state and applying pressure.

Used in boilers, furnaces and fired heaters for efficient heat recovery.

High-pressure boiler tube heat defect

High-pressure boiler tubes are frequently occurs fault because of high temperatures, affecting the entire heating system, mainly due to an internal boiler for heat treatment is not perfect, a lot of heat can not be effectively converted and timely treatment.

Hardness testing methods of high-pressure boiler tubes

Why boiler use Finned Tubes?

Finned Tube Heat Exchangers

Finned tubes are used in applications involving the transfer of heat from a hot fluid to a colder fluid through a tube wall.

The rate at which such heat transfer can occur depends on three factors:

the temperature difference between the two fluids;
the heat transfer coefficient between each of the fluids and the tube wall;
and the surface area to which each fluid is exposed.

The basic method of rust removal

a. Cleaning

Using the solvent and emulsion to clean the surface of high pressure boiler pipe, so as to achieve the purpose of removing oil, grease, dust, lubricant and similar organic matter. But it cannot remove the dust, oxide skin, welding medicine and so on. So it is only as a supplementary method in the anti-corrosion production.

b. Tool

Tool rust removal mainly use wire brush and other tools to grind the surface of high pressure boiler pipe. It can remove loose or warping of the oxide skin, rust, welding slag and so on. Manual tool can reach SA2 level, power tool can reach SA3 level. If the iron oxide scale attached to the surface, it cannot reach the anchorage depth required by the anti-corrosion construction.

c. Acid cleaning

High pressure boiler pipe generally adopt chemical and electrolytic methods to do pickling treatment.

d. Spray rust removal

Spray rust removal cannot only remove rust, oxide and dirt completely, but also high pressure boiler pipe can achieve the required uniform roughness under the action of abrasive impact and friction force.

Spay rust removal cannot only expand the physical adsorption on the surface of high pressure boiler pipe, but also enhance the mechanical adhesion between the anti corrosion layer and the pipe surface. So spray rust removal is ideal method of rust removing for pipeline corrosion.

Boiler pipe forming

Boiler pipe forming include fin tube, serpentine tube and reaming welding.

Boiler tubes need take for a variety of molding in the boiler manufacture and installation process

Heat treatment methods applied in the boiler pipes

Heat treatment is a method of changing the physical properties of high pressure boiler pipe by heating and cooling. Heat treatment can improve the microstructure of high pressure boiler pipe, so as to meet the required physical requirements. Toughness, hardness and wear resistance are obtained by heat treatment. In order to obtain these characteristics, it is necessary to adopt quenching, annealing, tempering and surface hardening.

a. Quenching

Hardening, also called quenching, is that high pressure boiler pipe is heated evenly to the appropriate temperature, then quickly immerse in water or oil for rapid cooling, and cooling in the air or in the freezing zone. So that the high pressure boiler pipe can obtain the required hardness.

b. Tempering

High pressure boiler pipe will become brittle after hardening. And the stress caused by quenching can make the high pressure boiler pipe tapped and broken. The tempering method can be used to eliminate brittleness. Although the hardness of high pressure boiler pipe is lighter reduced, its the toughness can be increased to reduce the brittleness.

c. Annealing

Annealing is the method to eliminate the internal stress of high pressure boiler pipe. The annealing method is that the steel parts need to be heated to the critical temperature, then put in dry ash, lime, asbestos or closed in the furnace, then let it cooling slowly.