ASTM A335 alloy steel pipe

ASTM A335 seamless ferritic alloy-steel pipe for high-temperature service.

ASTM A213 alloy tube

ASTM A213 Alloy Tubes are been widely used in high temperature services especially for the boiler and superheater.

ASTM A333 alloy pipes

ASTM A333 (ASME S/A-333) Pipe grades permit low temperature service.

Non alloy steel tubes

Non-alloy steel tubes with specified room temperature properties.

All our matel cut to size

The alloy steel pipe adopts high quality carbon steel, alloy structural steel and stainless & heat resisting steel as raw material through hot rolling or cold drawn to be made.

Alloy pipes stock

Alloy steel pipe is a kind of seamless steel pipe, its performance is much higher than the general seamless steel pipe, because this steel pipe inside containing

Alloy pipes specification and Size

Alloy steel is a series of alloy which its main content is steel. To add different metal elements with different ratios in steel can change the mechanical properties of alloy steel.

The main applications of alloy steel pipe is power station, nuclear power plant, high pressure boiler, high temperature superheater and re-heater coil etc. of high temperature pipeline and equipments.

The advantages of alloy steel pipe: 100% recycled, it is suitable for the national strategy of environmental protection, energy-saving and resource-saving. Therefore, the national policy encourages the expansion of the high pressure alloy steel pipe applications.

At present, the proportion of the total alloy steel tube is half of the developed countries. The applications of alloy steel pipe provide a broad space for the industry development. According to the research of the China association of special steel alloy pipe expert group, our country’s high pressure alloy steel pipe material demand grows by an average of up to 10-12%.

Developed with advance technology, these products are in compliance with the defined parameters of the industry. These offered alloy pipes are available with us in divergent sizes and specifications meeting divergent demands of the clients.

Further, information regarding offered pipes are is given below:

Description: alloy steel pipe, alloy seamless steel pipe, alloy welded pipe,seamless alloy steel pipe,alloy pipe,alloy steel tube

Outside Diameter: 6 mm-1080mm
Wall tihckness: 1mm-60mm
Length: 5.8m,6m,11.8m,12m or as your requirement

ASTM/ ASME

American Society for Testing and Materials(ASTM), American Society of Mechanical Engineers (ASME)

Description	Standard	Dimension (mm)	Steel code/ Steel grade
Carbon and alloy steel mechanical tubing, either hot-finished or cold-finished	ASTM A519	20-180 x 2-30	A1, C
Seamless Ferritic and Austenitic Alloy Steel Boiler, Superheater and Heat-exchanger Tubes	ASTM A213 09	10.3-426 x 1.0-36	T5, T5b, T9 , T11, T22 ,T91
Seamless Carbon and Alloy Steel for Mechanical Tubing	ASTM A333	1/4″-42″ x SCH20-XXS	Grade1 Gr. 3,Gr..6, Gr.8 , Gr. 9
Seamless ferritic alloy-steel pipe for high-temperature service	ASTM 335/335M	1/4″-42″ x SCH20-XXS	P5, P9 ,P11, P91, P22, P92

DIN/EN- European Standards for steel

Germany Safety(GS), Deutsches Institut für Normung(DIN)

Product name	Executive standard	Dimension (mm)	Steel code/ Steel grade
Seamless Steel Tubes for Elevated Temperature	DIN 17175	10-762 x 1.0-120	St35.8,St45.8, 10CrMo910, 15Mo3, 13CrMo44, STPL340, STB410, STB510, WB36
Seamless steel tubes for pressure purposes	EN10216	4.0-60.0 x 0.5-8 5-7 m manufacturing lenght	P235GH TC1, P235GH TC2, 16Mo3
Seamless precision steel tube applications	EN 10305-1	13.5-165.1 x 1.8-4.85	St33.2
Seamless Precision Steel Tube	DIN 2391	4.0-60.0 x 0.5-8	St35, St45, St52

JIS

Japanese Industrial Standards (JIS) specifies the standards used for industrial activities in Japan.

Product name	Executive standard	Dimension (mm)	Steel code/ Steel grade
Carbon steel/Alloy steel boiler and heat exchanger tubes	JIS G3461,2	19.05-114.3 x 2.0-14	G3461(STB340, STB410, STB510) G3462(STBA22, STBA23)
Heat resistant alloy steel pipes that are used for high temperature conveying fluid pipes for heaters and boiler tubes.	JIS G3458	10.5-660.4 mm	STPA 12, STPA 20, STPA 22, STPA 23, STPA 24, STPA 25, STPA 26

Recommended alloy steel pipes

SunnySteel supplier alloy steel pipes & tubes as ASTM A213,A335 and A333 used for many different purposes.

Alloying Elements

Commonly used alloying elements and their effects are listed in the table given below.

Alloying Elements	Effect on the Properties
Chromium	Increases Resistance to corrosion and oxidation. Increases hardenability and wear resistance. Increases high temperature strength.
Nickel	Increases hardenability. Improves toughness. Increases impact strength at low temperatures.
Molybdenum	Increases hardenability, high temperature hardness, and wear resistance. Enhances the effects of other alloying elements. Eliminate temper brittleness in steels. Increases high temperature strength.
Manganese	Increases hardenability. Combines with sulfur to reduce its adverse effects.
Vanadium	Increases hardenability, high temperature hardness, and wear resistance. Improves fatigue resistance.
Titanium	Strongest carbide former. Added to stainless steel to prevent precipitation of chromium carbide.
Silicon	Removes oxygen in steel making. Improves toughness. Increases hardness ability
Boron	Increases hardenability. Produces fine grain size.
Aluminum	Forms nitride in nitriding steels. Produces fine grain size in casting. Removes oxygen in steel melting.
Cobalt	Increases heat and wear resistance.
Tungsten	Increases hardness at elevated temperatures. Refines grain size.

Q&A

Our team of experienced sales specialists proudly partners with gas and chemical processors, power generation plants, oil refineries, and related industries to offer piping components and value-added services.

The most important and desired changes in alloy steel are:

Alloy steels are made by combining carbon steel with one or several alloying elements, such as manganese, silicon, nickel, titanium, copper, chromium and aluminum. These metals are added to produce specific properties that are not found in regular carbon steel. The elements are added in varying proportions (or combinations) making the material take on different aspects such as increased hardness, increased corrosion resistance, increased strength, improved formability (ductility); the weldability can also change.

Increased hardenability.
Increased corrosion resistance.
Retention of hardness and strength.

Nearly all alloy steels require heat treatment in order to bring out their best properties.

Alloying Elements & Their Effects

Chromium – Adds hardness. Increased toughness and wear resistance.
Cobalt – Used in making cutting tools; improved Hot Hardness (or Red Hardness).
Manganese – Increases surface hardness. Improves resistance to strain, hammering & shocks.
Molybdenum – Increases strength. Improves resistance to shock and heat.
Nickel – Increases strength & toughness. Improves corrosion resistance.
Tungsten – Adds hardness and improves grain structure. Provides improved heat resistance.
Vanadium – Increases strength, toughness and shock resistance. Improved corrosion resistance.
Chromium-Vanadium – Greatly improved tensile strength. It is hard but easy to bend and cut.

Pipes, Tubes and Hollow SectionsNorms:

API 5L – Line Pipe
ASTM A 53 – Black and Hot-Dipped, Zinc-Coated, Welded and Seamless, Steel Pipe
ASTM A 106 – Seamless Carbon Steel Pipe for High-Temperature Service
ASTM A 213 – Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
ASTM A 269 – Seamless and Welded Austenitic Stainless Steel Tubing for General Service
ASTM A 312 – Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
ASTM A 333 – Seamless and Welded Steel Pipe for Low-Temperature Service
ASTM A 335 – Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
ASTM A 358 – Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications
ASTM A 671 – Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures
ASTM A 672 – Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures
ASTM A 790 – Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
ASTM A 928 – Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal
EN 10208-2 – Steel pipes for pipelines for combustible fluids – Part 2: Pipes of requirement class B
EN 10210-1/2 – Hot finished structural hollow sections of non-alloy and fine grain steels
EN 10216-1 – Seamless steel tubes for pressure purposes – Part 1: Non-alloy steel tubes with specified room temperature properties
EN 10216-2 – Seamless steel tubes for pressure purposes – Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties
EN 10217-1 – Welded steel tubes for pressure purposes – Part 1: Non-alloy steel tubes with specified room temperature properties
EN 10217-2 – Welded steel tubes for pressure purposes – Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties
EN 10219-1/2 – Cold formed welded structural hollow sections of non-alloy and fine grain steels
EN 10297-1 – Seamless circular steel tubes for mechanical and general engineering purposes – Part 1 Non-alloy and alloy steel tubes

Grade:

API 5L Gr. A, B, X42, X52, X60, X65, X70
ASTM A 53 Gr. A, Gr. B
ASTM A106 Gr. A, B, C
ASTM A 213 TP 304, 304L, 304H, 316, 316L, 316H, 321, 321H, T5, T9, T11
ASTM A 269 TP 304, 304L, 304H, 316, 316L, 316H, 321, 321H
ASTM A 312 TP 304, 304L, 304H, 316, 316L, 316H, 321, 321H
ASTM A 333 Gr. 3, Gr. 6 ASTM A 335 P1, P2, P5, P9, P11, P12, P22, P91, P92
ASTM A 358 TP 304, 304L, 304H, 316, 316L, 316H, 321, 321H
ASTM A 671 CC 60, CC 65, CC 70
ASTM A 672 CC 60, CC 65, CC 70
ASTM 790 UNS S31803, UNS S32205, UNS S32750, UNS S32760
ASTM A928
EN 10208-2 L245, L 290, L360
EN 10210-1 S235 JRH, S275 JOH, S275 J2H, S355 JOH, S355 J2H
EN 10216-1 P235 TR1/2
EN 10216-2 P235 GH, P265 GH
EN 10217-1 P235 TR1/2, P275 TR1/2
EN 10217-2 P235 GH, P265 GH
EN 10219-1 S235 JRH, S275 JOH, S275 J2H, S355 JOH, S355 J2H
EN 10297-1 E235, E275, E315, E355, E470

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Alloy pipe