TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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1016mm JIS GS3468 SUS 304 TPY and 316TPY CNS 13517 Large diameter size SS 304 stainless pipes
Quick detail:
Size 1016 mm size range from 6-2000mm thickness from 0.5-100mm
Produce by single seam doule seam circular seam(It can make bigger size)
Material: Austenitic Stainless Steel,Duplex ,Nickel-Base Alloy,Copper Nickel Alloy,Ferrite,Other Special Material,High-Temp Material,Titanium Alloys
Steel Grade:
Duplex S,32750:
Duplex S,32750 Chemical composition:
Duplex ,S31803 Chemical composition
S32205 Chemical composition
Nickel-Base Alloy N08904 Chemical composition:
N06600 Chemical composition
N08825 Chemical composition
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 | |||||