1/2" -48" Big Size Large Size EFW ERW Double Seam Welded Pipe 304 316 304L 316L
Quick detail:
Size: 1/2" -48"
Production method: EFW ERW Double Seam Welded
Material
304 316 304L 316L
Big Size Large Size EFW ERW Double Seam Welded Pipe Mainly use in Electric Power,Oil Refining ,Nuclear Power,Drinking Water,
Offshore Engineering &Shipbuilding,Natural Gas,Paper making,Construction
Other material is also available.
| 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 |
Roting:
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
Delivery condition:
Heat treatment
Welded
Big Size Large Size EFW ERW Double Seam Welded Pipe Tolerance:
| 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 |
Roting:
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
Corporate Culture:
We focus on Quality First, Quality Traceability, and Quality Stability!
We focus on Customer First, People First, and Quality-Oriented!
Product Tags:
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EFW ERW Double Seam Welded Stainless Steel Tube 304 316 304L 316L Images
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