Construction 254SMO 253MA Erw Stainless Steel Tube
254SMO,253MA Special Material Double Seam 304 316 ERW Stainless Steel Pipe /SS Tube
Quick detail:
Single Seam: Outside Diameter 6-914mm Wall thickness 0.5-60mm
Double Seams:Outside Diameter 630-1524mm Wall thickness 2-80mm
Circular Seam:Outside Diameter 630 mm above Wall thickness 2-100
Material
SUS 304,TP304 SUS304L TP304L SUS316 TP316 SUS316 TP316L.
Calculation Formula
0.02491
0.02482
0.02513
Application : Electric Power
Oil Refining
Nuclear Power
Drinking Water
Offshore Engineering &Shipbuilding
Natural Gas
Paper making
Construction
Description:
LARGE DIAMETER PIPE Available material
| Material | |
| Austenitic Stainless Steel | 310S, 309S,316L,321,304L,304 |
| Duplex | S,32750,S32760,S31803,S32205 |
| Nickel-Base Alloy | N08904,N06600,N08825 |
| Copper Nickel Alloy | C70600,C70620 |
| Ferrite | 430,409L |
| Other Special Material | 254SMO,253MA |
| High-Temp Material | 310S,309S,S30815 |
| Titanium Alloys | TA2,TA10,TC4 |
Production process:
Steel Coil
Re-test
Flat Open and Transverse Shear
Shear Longitudinal Shear
Edge Planning and Milling
Butt Welding of plate
Forming(Bending/Reeling)
End Squaring&Tack Welding
Welding Seam Cleaning
Automatic welding
Radiographic Test
Solution Treatment
Rounding
Straightening
End Facing Treatment
Hydrostatic Test
Pickling Passivation
Rinse and Dry
Radiographic Test
Finished Production Testing
Marking
Packing
Finished Product Warehousing
Shipping
Standard:
GB/T 12771
Delivery condition:
Heat treatment
Welded
| Standard | Item | Outside Diameter | Thickness | Roundness
| Straightness | Length | ||
| GB/T 12771 | Heat treatment | High Class | General | |||||
| ＜50 | ±0.20 | ±0.3 | ＞0.5-1.0,±0.15 ＞1.0-2.0 ±0.20 ＞2.0-4.0 ±0.3 ±10% | Not exceed the OD tolerance t/D≤3% ≤1.5%D | OD ≤ 108 mm,≤1.5mm/m ＞ 108-325mm ≤2.0mm/m ＞ 325mm ≤2.5mm/m
| 3000-9000mm, Length tolerance is 0,+20mm
| ||
| ≥40-＜65 | ±0.30 | ±0.40 | ||||||
| ≥65-＜90 | ±0.40 | ±0.50 | ||||||
| ≥90-＜168.3 | ±0.80 | ±1.0 | ||||||
| ＞168.3-＜325 | ±0.75% D | ±1% D | ||||||
| ≥325-＜610 | ±0.6% D | ±1% D | ||||||
| ＞610 | ±0.6% D | ±0.7% or± 10 Chose min value | ||||||
| Welded | All sizes | ±0.5% D or ±0.20 chose the bigger one | ±0.75% D or ±0.30 chose the bigger one | |||||
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