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Structure Works
Structure Works
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Stainless Steel Structure Pipes

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Popular Standards

● ASTM A554                          
● EN10296-2                        
● GB/T14975 

Process Flowchart

Seamless SS Pipe
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Welded SS Pipe
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Popular Industrial SS Grades

Grade

Type

C（max）

Cr

Ni

Mo

Others

T.S (MPa,max)

Y.S (MPa,min)

Elongation (%,min)

Hardness  (HBW)
304 Austenitic 0.08 18-20 8-10.5 -

Mn(2%)Si(0.75)

 515 205 40 201
304L Austenitic 0.03 18-20 8-12 - Low carbon 485 170 40 201
316 Austenitic 0.08 16-18 10-14 2-3 Improved C/R 515 205 40 217
316L Austenitic 0.03 16-18 10-14 2-3 Low carbon 485 170 40 217
321 Austenitic 0.08 17-19 9-12 - Ti (5x C min) 515 205 40 201
347 Austenitic 0.08 17-19 9-13 - Nb+Ta 515 205 40 201
410 Martensitic 0.15 11.5-13.5 - - Mn(1%)Si(1%) 485 275 20 217
420 Martensitic 0.15-0.40 12-14 - - High carbon 586 345 15 235
430 Ferritic 0.12 16-18 - - Mn(1%)Si(1%) 450 205 22 183
2205 Duplex 0.03 21-23 4.5-6.5 2.5-3.5 N(0.14-0.20%) 620 450 25 293
2507 Duplex 0.03 24-26 6-8 3-4 N(0.24-0.32%) 800 550 15 310
Notes:
1. Composition values are in weight % (balance Fe).  
2. Mechanical properties are typical values (may vary with heat treatment).  
3. Austenitic grades (304, 316) are non-magnetic, corrosion-resistant, and ductile.  
4. Martensitic grades (410, 420) are hardenable by heat treatment.  
5. Ferritic grades (430) are magnetic with moderate corrosion resistance.  
6. Duplex grades (2205, 2507) offer high strength and corrosion resistance.

Cold Finished  (Cold-drawn or Cold-rolled) Seamless Tube Sizes Available

  • Table 01 Unit: MM
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  • Table to be continued:
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Hot Finished Seamless Pipe Sizes Available

Table 02  Unit: MM
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Table 03 Unit: MM
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Tolerance on Dimensions

Table 04 Tolerance on Out Diameter  Unit: MM
Standard Hot Finished Seamless Tube Cold Finished Seamless Tube
Outside Diameter (mm) Tolerance Outside Diameter (mm) Tolerance
EN10216-1 EN10216-2 DIN 17175 ≤100 >100 ±0.75% (min. ±0.5mm) ±0.90% All                  ±0.5% (min. ±0.30mm)
10～30                  ±0.40mm
GB/T 3087 ≤460 ±0.75% (min. ±0.5mm) >30～50                 ±0.45mm >50                    ±1.0%
GB/T 5310 GB/T9948 GB/T6479 <57                  ±0.40mm ≤30                  ±0.20mm
57~325                ±0.75% >30～50                 ±0.30mm
>325~460               +1%,-2mm >50                     ±0.8%
<25.4                 ±0.10mm
ASME SA-179M ASME SA-192M ASME SA-209M ASME SA-210M ASME SA-213M ≤101.6              +0.4,-0.8mm >25.4～38.1               ±0.15mm
>38.1~50.8               ±0.20mm
>50.8～63.5               ±0.25mm
JIS G3461 JIS G3462 101.6-190.5            +0.4,-1.2mm >63.5~76.2 >76.2 ±0.30mm ±0.38mm
ASME SA-106 ASME SA-335 ≤48.3               ±0.40mm 48~3-114.3              ±0.79mm 114.4~219.1            +1.59,-0.79mm ≤48.3                  ±0.40mm
219.2~323.9 ≥324 +2.38,-0.79mm ±1.0% >48.3                 ±0.79mm
Table 05  Tolerance on Wall Thickness  Unit: MM

Standard

Hot Finished Seamless Tube

Cold Finished Seamless Tube

Outside Diameter

OD(mm)

Wall Thickness

T(mm)

Tolerance

Outside Diameter      Wall Thickness

OD(mm)        T(mm)

Tolerance
S≤2Sn +15%,-10%
≤130 2Sn<S≤4Sn +12.5%,-10%
S>4Sn ±9%
DIN 17175   …                     …
S≤0.05da +17.5%,-12.5%
>130 0.05da<S≤0.1lda ±12.5%
S>0.1lda ±10% All ±10% (min. ±0.2mm)
≤219.1 ±12.5%(min. ±0.4mm)
EN10216-1  EN 10216-2 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-213M JISG3461 JISG3462 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%
For more details on specific carbon and alloy steel tubing and pipes, please refer to the specific product details or contact us at your convenience.
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