Mechanical steel tubes are used in machined or formed parts of industrial, automotive, farm machinery, aircraft, transportation, materials handling, and household equipment.
Seamless mechanical tubing is furnished in both cold-drawn and hotfinished form in a wide range of sizes, from 1.375" to 7.750" OD and from 0.188" to 1.625" wall thickness, as shown on the chart to the right.
OD Size Range Inches,Inclusive |
WallPercent of OD |
OD Inches |
ID Inches |
Quenched&TemperedOD & ID ± Inches |
OD Size Range mm ,Inclusive |
WallPercent of OD |
OD Inches |
ID Inches |
Quenched&TemperedOD & ID ± mm |
||||
Over |
Under |
Over |
Under |
Over |
Under |
Over |
Under |
||||||
0.500-1.699 1.700-2.099 2.100-2.499 |
All All All |
.005 .006 .007 |
.000 .000 .000 |
.000 .000 .000 |
.005 .006 .007 |
.015 .020 .023 |
12.70- 43.16 43.17- 53.32 53.33- 63.48 |
All All All |
0.13 0.15 0.18 |
0.00 0.00 0.00 |
0.00 0.00 0.00 |
0.13 0.15 0.18 |
0.38 0.51 0.58 |
2.500-2.899 2.900-3.299 3.300-3.699 3.700-4.099 |
All All All All |
.008 .009 .010 .011 |
.000 .000 .000 .000 |
.000 .000 .000 .000 |
.008 .009 .010 .011 |
.025 .028 .030 .033 |
63.49- 73.64 73.65- 83.80 83.81- 93.96 93.97-104.12 |
All All All All |
0.20 0.23 0.25 0.28 |
0.00 0.00 0.00 0.00 |
0.00 0.00 0.00 0.00 |
0.20 0.23 0.25 0.28 |
0.64 0.71 0.76 0.84 |
4.100-4.499 4.500-4.899 4.900-5.299 5.300-5.549 |
All All All All |
.012 .013 .014 .015 |
.000 .000 .000 .000 |
.000 .000 .000 .000 |
.012 .013 .014 .015 |
.036 .038 .041 .044 |
104.13-114.28 114.29-124.44 124.45-134.60 134.61-140.95 |
All All All All |
0.30 0.33 0.36 0.38 |
0.00 0.00 0.00 0.00 |
0.00 0.00 0.00 0.00 |
0.30 0.33 0.36 0.38 |
0.91 0.97 1.04 1.12 |
5.550-5.999 |
Under 6 6 to 71/2Over 71/2 |
.010 .009 .018 |
.010 .009 .000 |
.010 .009 .009 |
.010 .009 .009 |
.047 .047 .047 |
140.96-152.38 |
Under 6 6 to 71/2Over 71/2 |
0.25 0.23 0.46 |
0.25 0.23 0.00 |
0.25 0.23 0.23 |
0.25 0.23 0.23 |
1.19 1.19 1.19 |
6.000-6.499 |
Under 6 6 to 71/2Over 71/2 |
.013 .010 .020 |
.013 .010 .000 |
.013 .010 .010 |
.013 .010 .010 |
.050 .050 .050 |
152.39-165.08 |
Under 6 6 to 71/2Over 71/2 |
0.33 0.25 0.51 |
0.33 0.25 0.00 |
0.33 0.25 0.25 |
0.33 0.25 0.25 |
1.27 1.27 1.27 |
6.500-6.999 |
Under 6 6 to 71/2Over 71/2 |
.015 .012 .023 |
.015 .012 .000 |
.015 .012 .012 |
.015 .012 .012 |
.057 .053 .053 |
165.09-177.78 |
Under 6 6 to 71/2Over 71/2 |
0.38 0.30 0.58 |
0.38 0.30 0.00 |
0.38 0.30 0.30 |
0.38 0.36 0.30 |
1.45 1.35 1.35 |
7.000-7.499 |
Under 6 6 to 71/2Over 71/2 |
.018 .013 .026 |
.018 .013 .000 |
.018 .013 .013 |
.018 .013 .013 |
.065 .056 .056 |
177.79-190.48 |
Under 6 6 to 71/2Over 71/2 |
0.46 0.33 0.66 |
0.46 0.33 0.00 |
0.46 0.33 0.33 |
0.46 0.33 0.33 |
1.65 1.42 1.42 |
7.500-8.000 |
Under 6 6 to 71/2Over 71/2 |
.020 .015 .030 |
.020 .015 .000 |
.020 .015 .015 |
.020 .015 .015 |
.070 .060 .060 |
190.49-203.20 |
Under 6 6 to 71/2Over 71/2 |
0.51 0.38 0.76 |
0.51 0.38 0.00 |
0.51 0.38 0.38 |
0.51 0.38 0.38 |
1.78 1.52 1.52 |
Wall ThicknessPercent of OD | Maximum Percent Over & Under Nominal | Wall ThicknessPercent of OD | Maximum Percent Over & Under Nominal | ||
Under 1.499” ID | 1.500” ID & Over | Under 38.07mm ID | 38.07mm ID & Over | ||
Under 10 | 10.0 | 7.5 | Under 10 | 10.0 | 7.5 |
10 to 25 | 10.0 | 6.0 | 10 to 25 | 10.0 | 6.0 |
Over 25 | 12.5 | 7.5 | Over 25 | 12.5 | 7.5 |
Mechanical tubes are used for mechanical and light gauge structural applications.
Mechanical tubes are produced to meet specific end use requirements, specifications, tolerances and chemistries.
Tubing used for mechanical and light gauge structural applications. This allows for more specific property uniformity throughout the tube compared to standard pipe or tube. While Mechanical tube can be produced to standard specifications when requested, it is often produced to “typical” properties that focus mainly on the yield strength for a precise size and wall thickness. In some applications with severe forming, yield strength may not even be specified and the mechanical tube is produced to be “fit for use”. Mechanical tubing encompasses a wide range of both structural and non-structural applications.
At SunnySteel, we apply our metallurgical and production expertise to manufacture high-performance seamless mechanical tube products to meet your needs.
This includes carbon, alloy and even custom steel grades; annealed, normalized and tempered; stress relieved and stress free; and quench and tempered.
Seamless Steel Tubes for Mechanical and Automobile usage for Backbone of Automobile and rear axle tube, manufacturing and processing of precision equipments, instruments and apparatus.
Sunny Steel supply a 1/2 million foot inventory of carbon steel pressure tubing including boiler tubes, condenser tubes and heat exchanger tubes all made in the China.
Our carbon steel pressure tubing inventory is manufactured in accordance with ASME SA-178 A and/or ASME SA-214 in diameters of 3/4″ through 4”.
Backbone of Automobile and rear axle tube
Manufacturing and processing of precision equipments, instruments and apparatus
Delivery Condition: GBK, BKS, BK, BKW, NBK
Chemical Composition, Mechanical Properties, Visual and Dimension Test, NDT, Grain Size Test
Oil-dip, Varnish, Shot Blasting
Tubular products seamless mechanical tubing is furnished in both cold-drawn and hot finished form in a wide range of sizes, from 1.375″ to 7.750″ OD and from 0.188″ to 1.625″ wall thickness.
Tubular Products special seamless tubing configurations start with the highest quality steels. Grade, chemical analysis and surface condition are carefully considered, and production processes are tailored to achieve the best tubing for the end use.
The configurations are formed from round tube by cold drawing. The tube is drawn over a shaped mandrel or through a shaped die, or both. Improved tolerances, finishes and mechanical properties result.
Seamless and welded tubes for mechanical and general engineering applications. Tubes for construction and structural purposes such as civil structures, foundations, etc.
Abbr. | Corresponding | Application |
---|---|---|
A511 | ASTM A511 / A511M | Specification for Seamless Stainless Steel Mechanical Tubing |
A512 | ASTM A512 / ASME SA512 | Specification for Cold-Drawn Buttweld Carbon Steel Mechanical Tubing |
A513 | ASTM A513 / A513M | Specification for Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing |
A519 | ASTM A519 / A519M | Specification for Seamless Carbon and Alloy Steel Mechanical Tubing |
A554 | ASTM A554 | Specification for Welded Stainless Steel Mechanical Tubing |
In the world of tubing, things can get a bit confusing. With many different types of tubing for different applications, terms and meanings can be a bit ambiguous. With this in mind, we’ve set out to explain the difference between structural tubing and mechanical tubing.
tubing used for mechanical and light gauge structural applications. Mechanical tube is produced to meet specific end use requirements, specifications, tolerances and chemistries. This allows for more specific property uniformity throughout the tube compared to standard pipe. While Mechanical tube can be produced to standard specifications when requested, it is often produced to “typical” properties that focus mainly on the yield strength for a particular size and wall thickness. In some applications with severe forming, yield strength may not even be specified and the Mechanical tube is produced to be “fit for use”.
Structural Tubing
tubing used for structural applications. Standard strength requirements of the tube help dictate applications for which certain tubing is most appropriate. Structural tube is often referred to as hollow structural sections or HSS.
Mechanical tubing encompasses a wide range of both structural and non-structural applications.
At Wheatland Tube, our mechanical tubing is manufactured to typical Mechanical tube properties or in accordance with ASTM A500 and A513 Types 1 and 2 specifications.
Our Mechanical tubing is not limited to these specifications and can be produced to specific customer requirements when appropriate.
Additionally, our in-line galvanized products comply with A1057 and A787 coating specifications and provide a synergistic triple-coat process for enhanced product life.
While specifications will vary based on design (and from manufacturer to manufacturer), some common specifications of structural tubing include ASTM A500 Grade B and C, A847, A1065, and the recently approved ASTM A1085.
In both cases of “Structural” or “Mechanical” tubing, these products are ordered to a specific outside dimension (OD) and “gauge” or wall thickness. This varies from “pipe” products which are ordered based on inside dimensions (ID) and often pipe “schedules” that determine the wall thickness. Pipe and conduit products should not be used in structural applications as their strength properties may not be produced to standard structural specifications or meet specified engineering requirements.
Seamless pipes are commonly used in various industries for different applications. Here are some of the main uses of seamless pipes:
It's important to note that the above applications are just a few examples, and seamless pipes have a wide range of uses in many other industries and sectors where reliable and efficient fluid transportation is required.
Steel Grade | Standard | Application | |||
GB(China) | ASME(USA) | DIN/EN(Euro) | JIS(Jpan) | ||
Carbon steel | 10 20 20G 20MnG 25MnG Q345B/C/D/E |
A106 SA-106B SA-106C SA-192 SA-210A1 SA-210C |
St35.8 St45.8 P235GH P265GH |
STB340 STB410 STB510 |
Economizer tube Water wall tube, pipeline, header pipe, Petrochemical furnace tube, heat exchange tube |
Mo steel | 15MoG 20MoG |
SA-209 T1 SA-209 T1a SA-209 T1b |
16Mo3 | 15Mo3 16Mo3 |
Water wall tube Superheater tube Reheater tube |
Cr-Mo Steel Cr-Mo-V steel |
12Cr1MoG 12Cr2MoWVTiB |
12Cr1MoV 14MoV63 |
Superheater tube Reheater tube, Pipeline, Header pipe, Petrochemical furnace tube, Heat exchange tube |
||
Cr-Mo-Steel Cr-Mo-W Steel Cr-Mo Steel Cr-Mo-W steel |
12CrMoG 15CrMoG 12Cr2MoG 10Cr9Mo1VNbN 10Cr9MoW2VNbBN 12Cr1Mo 12Cr5Mol/NT 12Cr9Mol/NT |
T11/P11 T12/P12 T22/P22 T23/P23 T24/P24 T5/P5 T9/P9 T91/P91 T92/P92 |
10CrMo5-5 12CrMo4-5 10CrMo9-10 7CrWVMoNb9-6 7CrMoVTIB10-10 X10CrMoVNb9-1 X10CrWMoVNb9-2 X11CrMo5+l/NT X11CrMo9-1+l/NT |
STB20 STB22 STB23 STB24 STB25 STB26 |
Superheater tube, Reheater tube, Main steam pipe, Pipleline, Header pip, Petrochemical furnace tube, Heat exchange tube |
Carbon steel Ni steel |
16MnDG 10MnDG 09DG |
A333-1 SA-333-1 A333-6 SA-333-6 A333-3 SA-333-3 |
STPL380 STPL450 |
Tube & pipe for Low-temperature service | |
Austentic Stainless steel | --- | AP304 TP304H TP321 TP321H TP347 TP347H TP316 TP316H S30432 TP310HCbN |
--- | Superheater tube Reheater tube |
Pipe types | Pipe Szie(mm) | Tolerances | |
Hot rolled | OD | <50 | ±0.50mm |
≥50 | ±1% | ||
WT | <4 | ±12.5% | |
≥4-20 | +15%, -12.5% | ||
>20 | ±12.5% | ||
Cold drawn | OD | 6-10 | ±0.20mm |
10-30 | ±0.40mm | ||
30-50 | ±0.45 | ||
>50 | ±1% | ||
WT | <1 | ±0.15mm | |
>1-3 | + 15%, – 10% | ||
>3 | + 12.5%, – 10% |
For pipe over 10 inches as a special OD tolerance pipe, the OD shall within vary +1% /-1%.
Standard | Hot finished seamless tube | Cold flnished seamless tube | ||
Out diameter (mm) |
Tolerance | Out diameter (mm) | Tolerance | |
---|---|---|---|---|
EN10216-1 EN10216-2 DIN17175 |
≤100 | +/-0.75% (min.+/-0.5mm) |
All | +/-0.5% (min. +/-0.30mm) |
>100 | +/-0.90% | |||
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% |
For standard pipe, except as provided for thin-wall pipe, the tolerances of diameter shall be in accordance with the following table:
Standard | Hot finished seamless tube | Cold flnished seamless tube | ||
Out diameter (mm) |
Tolerance | Out diameter (mm) | Tolerance | |
---|---|---|---|---|
EN10216-1 EN10216-2 DIN17175 |
≤100 | +/-0.75% (min.+/-0.5mm) |
All | +/-0.5% (min. +/-0.30mm) |
>100 | +/-0.90% | |||
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% |
The wall thickness at any point shall be within the below tolerance table.
Standard | Hot finished seamless tube | Cold flnished seamless tube | ||||
Out diameter OD(mm) |
Wall thickness T(mm) |
Tolerance | Out diameter (mm) |
Wall Thickness T(mm) |
Tolerance | |
---|---|---|---|---|---|---|
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% |
>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% | |||||
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% |
Table 1, size for cold-drawn or cold rolled tube (Unit:mm)
W.T. O.D. |
2.5 | 3 | 3.2 | 3.5 | 4.0 | 4.5 | 5 | 5.5 | 6.5 | 7.0 | 7.5 | 8.0 | 8.5 | 9.0 | 9.5 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 16.0 |
18 | ||||||||||||||||||||||
19 | ||||||||||||||||||||||
22 | ||||||||||||||||||||||
24 | ||||||||||||||||||||||
25 | ||||||||||||||||||||||
28 | ||||||||||||||||||||||
29 | ||||||||||||||||||||||
30 | ||||||||||||||||||||||
31.8 | ||||||||||||||||||||||
35 | ||||||||||||||||||||||
38 | ||||||||||||||||||||||
40 | ||||||||||||||||||||||
42 | ||||||||||||||||||||||
45 | ||||||||||||||||||||||
48 | ||||||||||||||||||||||
50 | ||||||||||||||||||||||
51 | ||||||||||||||||||||||
54 | ||||||||||||||||||||||
57 | ||||||||||||||||||||||
60 | ||||||||||||||||||||||
63.5 | ||||||||||||||||||||||
68 | ||||||||||||||||||||||
70 | ||||||||||||||||||||||
73 | ||||||||||||||||||||||
76 | ||||||||||||||||||||||
83 | ||||||||||||||||||||||
89 | ||||||||||||||||||||||
W.T. O.D. |
2.5 | 3 | 3.2 | 3.5 | 4.0 | 4.5 | 5 | 5.5 | 6.5 | 7.0 | 7.5 | 8.0 | 9.0 | 9.5 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 16.0 |
Note:
At the request of the purchaser and specified in the purchase order, the steel tubes with other O.D. and W.T. can be produced after the review.
(Unit:mm)
W.T. O.D. |
3.2 | 3.5 | 3.6 | 4.0 | 4.5 | 5.0 | 5.5 | 5.6 | 6.0 | 7.0 | 7.1 | 7.5 | 8.0 | 8.5 | 8.8 | 9.0 | 9.5 | 10.0 | 11.0 | 12.0 | 12.5 | 13.0 | 14.0 | 14.2 | 15.0 | 16.0 | 17.0 | 17.5 | 18.0 | 19.0 | 20.0 | 22.2 | 24.0 | 25.0 | 30.0 |
31.8 | |||||||||||||||||||||||||||||||||||
33.4 | |||||||||||||||||||||||||||||||||||
35 | |||||||||||||||||||||||||||||||||||
40 | |||||||||||||||||||||||||||||||||||
42 | |||||||||||||||||||||||||||||||||||
42.4 | |||||||||||||||||||||||||||||||||||
44.5 | |||||||||||||||||||||||||||||||||||
45 | |||||||||||||||||||||||||||||||||||
48 | |||||||||||||||||||||||||||||||||||
50 | |||||||||||||||||||||||||||||||||||
51 | |||||||||||||||||||||||||||||||||||
54 | |||||||||||||||||||||||||||||||||||
57 | |||||||||||||||||||||||||||||||||||
60 | |||||||||||||||||||||||||||||||||||
63 | |||||||||||||||||||||||||||||||||||
63.5 | |||||||||||||||||||||||||||||||||||
68 | |||||||||||||||||||||||||||||||||||
70 | |||||||||||||||||||||||||||||||||||
71 | |||||||||||||||||||||||||||||||||||
73 | |||||||||||||||||||||||||||||||||||
76 | |||||||||||||||||||||||||||||||||||
82 | |||||||||||||||||||||||||||||||||||
89 | |||||||||||||||||||||||||||||||||||
95 | |||||||||||||||||||||||||||||||||||
101.6 | |||||||||||||||||||||||||||||||||||
108 | |||||||||||||||||||||||||||||||||||
114.3 | |||||||||||||||||||||||||||||||||||
121 | |||||||||||||||||||||||||||||||||||
127 | |||||||||||||||||||||||||||||||||||
133 | |||||||||||||||||||||||||||||||||||
140 | |||||||||||||||||||||||||||||||||||
146 | |||||||||||||||||||||||||||||||||||
152 | |||||||||||||||||||||||||||||||||||
159 | |||||||||||||||||||||||||||||||||||
165 | |||||||||||||||||||||||||||||||||||
168 | |||||||||||||||||||||||||||||||||||
180 |
(Unit:mm)
W.T. O.D. |
6 | 6.4 | 6.7 | 7 | 7.4 | 7.6 | 9 | 9.5 | 10 | 14 | 16 | 20 | 25 | 30 | 32 | 35 | 40 | 46 | 50 | 52 | 55 | 60 |
200.03 | ||||||||||||||||||||||
219.1 | ||||||||||||||||||||||
244.5 | ||||||||||||||||||||||
269.8 | ||||||||||||||||||||||
273 | ||||||||||||||||||||||
298.5 | ||||||||||||||||||||||
325 | ||||||||||||||||||||||
339.7 | ||||||||||||||||||||||
351 | ||||||||||||||||||||||
355.6 | ||||||||||||||||||||||
365.1 | ||||||||||||||||||||||
377 | ||||||||||||||||||||||
402 | ||||||||||||||||||||||
406.4 | ||||||||||||||||||||||
426 | ||||||||||||||||||||||
431.8 | ||||||||||||||||||||||
457 |
10MnDG is a type of seamless steel pipe that belongs to the family of high-pressure boiler tubes. It is a low-alloy steel pipe with a chemical composition that includes carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), and other trace elements.
The chemical composition of 10MnDG typically includes:
10MnDG seamless steel pipe is mainly used in the manufacture of high-pressure and ultra-high-pressure boilers and pressure vessels. The pipes are designed to withstand high-pressure and high-temperature environments, making them suitable for use in applications such as power generation, chemical processing, and oil and gas refining.
10MnDG is a reliable material with excellent mechanical properties, including high strength, toughness, and resistance to creep deformation at high temperatures. These characteristics make it an ideal choice for use in critical applications where performance and reliability are essential.
Overall, 10MnDG seamless steel pipe is an important component of industrial piping systems, providing safe and efficient means for transporting fluids at high pressures and temperatures.
16MnDG is a type of seamless steel pipe that is commonly used in the manufacturing of high-pressure vessels and boilers. It belongs to the family of low-alloy steels and has a chemical composition that includes carbon, silicon, manganese, phosphorus, sulfur, and other trace elements.
The chemical composition of 16MnDG typically includes:
16MnDG seamless steel pipe has good mechanical properties, including high strength, toughness, and resistance to creep deformation at high temperatures. These characteristics make it an excellent choice for use in high-pressure and high-temperature environments, such as in the manufacture of boilers, pressure vessels, and other equipment used in power generation and chemical processing industries.
The seamless nature of 16MnDG pipes ensures uniformity and consistency in their structure, which makes them less prone to defects or failures. This enhances their reliability and safety, providing a secure means for transporting fluids at high pressures and temperatures.
Overall, 16MnDG seamless steel pipe is an important component of industrial piping systems, providing a reliable and efficient means for transporting fluids in harsh and demanding environments.
09DG is a type of seamless steel pipe that belongs to the family of high-temperature and pressure-resistant steel pipes. It has a chemical composition that includes carbon, silicon, manganese, phosphorus, sulfur, and other trace elements.
The chemical composition of 09DG typically includes:
09DG seamless steel pipe is designed to withstand high-temperature and high-pressure conditions, making it suitable for use in the manufacture of boilers, heat exchangers, and other equipment used in the power generation and chemical processing industries.
The seamless nature of 09DG pipes ensures that they have a homogeneous and consistent structure, which reduces the likelihood of defects or failures. This enhances their safety and reliability, providing a secure means for transporting fluids under high pressures and temperatures.
09DG seamless steel pipe has excellent mechanical properties, including high strength, good toughness, and resistance to creep deformation at high temperatures. These characteristics make it an ideal material for use in critical applications where performance and reliability are essential.
Overall, 09DG seamless steel pipe is an important component of industrial piping systems, providing a reliable and efficient means for transporting fluids at high pressures and temperatures.
A pickling phosphating tube is a type of treated steel tube that undergoes a specific chemical process known as pickling and phosphating.
This process is often used to prepare the surface of steel or iron materials for painting, coating, or other finishing procedures.
Carbon Steel: 10#, 20#, 35#, 45#, S45C, 55#, Q235B, Q235C, Q345D, CF53, A105
Alloy Steel: 16Mn (Q345B), 20Cr, 40Cr, 15CrMo, 20CrMo, 28CrMo, 30CrMo, 35CrMo, 42CrMo, 4130, 4140, 20CrMnTi, 40MnMoV, 20Mn2, 37Mn5, ZF6, 16MnCr5, 20MnCr5, 36Mn2V, 38Mn2V, 20Mn2, 65Mn, 15Mo3
Other: Acid Pickling and Phosphating Pipe, Special Materials Available for Customization.
Alloy steel pipes are ideally suitable for chemical, petrochemicals, and other energy-related applications.
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 steel can be used in process area where carbon steel has limitation such as
As an important element of steel products, alloy steel pipe can be divided into seamless steel pipe and welded steel pipe according to the manufacturing technique and tube billet shape.
Here you can see the common alloy steel grade that you will come across.
Why the application of alloy steel pipe is wider than others
There are many kinds of materials used for transport in industrial production. Specifically we will have more choices and it is not limited to the use of alloy steel pipe. But even in the face of more choices, many people tend to choose alloy steel pipe. People make their own choices will have their own reasons. This means the alloy steel pipe application has its own advantages. Compared with transmission lines made of other materials, after it meets the basic application requirements, its quantity is lighter. Then in the practical application of alloy steel pipe, it will have more advantages because of this. Besides its physical characteristic advantage, it also has economic advantages. The wide application of alloy steel pipe is with kinds of reasons. So in practical usage, we can exploit the advantages to the full, in this way can we get more profits in these applications of alloy steel pipe.
The transportation of kinds of gases or liquids in production needs to rely on alloy steel pipe. This shows that the actual role of alloy steel pipe application is important. High temperature resistant and low temperature resistant is the tolerance of temperature. In the practical application of alloy steel pipe, there will be many materials need to be transported. However their temperatures are not the same. So this can be the basic requirement to alloy steel pipe. It needs more corrosion resistance. Corrosion resistant material is the best material during transporting, because it is corrosion resistant. So it can be used in more occasions. And it is definitely very convenient for users.
Can be 100% recycled, environmentally friendly, energy-saving, resource conservation, national strategy, national policy to encourage the expansion of the field of application of high-pressure alloy pipe. Of alloy steel pipe total consumption accounted steel in the proportion is only half of the developed countries, to expand the field of use of the alloy steel pipe to provide a wider space for the development of the industry. The future needs of the average annual growth of China’s high-pressure alloy steel pipe long products up to 10-12%.
Alloy Steel pipe contains substantial quantities of elements other than carbon such as nickel, chromium, silicon, manganese, tungsten, molybdenum, vanadium and limited amounts of other commonly accepted elements such as manganese, sulfur, silicon, and phosphorous.
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 biggest advantages of alloy steel pipe can be 100% recycled, environmentally friendly, energy-saving, resource conservation, national strategy, national policy to encourage the expansion of the field of application of high-pressure alloy pipe. Of alloy tube total consumption accounted steel in the proportion is only half of the developed countries, to expand the field of use of the alloy tube to provide a wider space for the development of the industry. According to the Chinese Special Steel Association alloy pipe Branch Expert Group, the future needs of the average annual growth of China’s high-pressure alloy pipe long products up to 10-12%.
Chemical composition inspection, mechanical properties test(tensile strength,yield strength, elongation, flaring, flattening, bending, hardness, impact test), surface and dimension test,no-destructive test, hydrostatic test.
identification of the chemical composition of the metal used to manufacture the fitting. Uses PMI sensors, including X-ray fluorescence or optical emission spectrometry.
Steel pipe delivery status(condition): cold / hard (BK), cold / soft (BKW), after cold stress relief annealing (BKS), annealing (GBK), normalized (NBK).
Term | Symbol | Explanation |
Cold-finished/hard (cold-finished as-drawn) | BK | No heat treatment after the last cold-forming process. The tubes therefore have only low deformability. |
Cold-finished/soft (lightly cold-worked) | BKW | After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits. |
Annealed | GBK | After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum. |
Normalized | NBK | The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum. |
The general cold strip mills, volume should go through continuous annealing (CAPL unit) to eliminate cold hardening and rolling stress, or batch annealing reach the mechanical properties of the corresponding standard specifies. Cold rolled steel surface quality, appearance, dimensional accuracy better than hot-rolled plate, and right-rolled thin product thickness is about 0.18mm, so the majority of users favor.
Cold rolled steel coil substrate products deep processing of high value-added products. Such as electro-galvanized, hot dip galvanized, electro-galvanized fingerprint resistant, painted steel roll damping composite steel, PVC laminating steel plates, etc., so that the excellent quality of these products has a beautiful, high resistance to corrosion, has been widely used.
Cold rolled steel coil finishing after annealing, cut the head, tail, trimming, flattening, smooth, heavy volume, or longitudinal clipboard. Cold-rolled products are widely used in automobile manufacturing, household electrical appliances, instruments, switches, buildings, office furniture and other industries. Steel plate strapping package weight of 3 to 5 tons. Flat sub-volume typically 3 to 10 tons / volume. Coil diameter 6m.
Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.
There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and Sea transportation security.
Our packing can meet any needs of the customers.
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.
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.
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. |