TORICH INTERNATIONAL LIMITED
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TORICH ASTM A312 Large Big Diameter Industrial Stainless Steel Tube and Pipe
Size
| Seam Type | OD | WT |
| Single Seam | 6-914mm | 0.5-60mm |
| Double Seam | 630-1524mm | 2-80mm |
| Circular Seam | over 630mm | 2-100mm |
Material Available
| Material | Grade |
| Austenitic Stainless Steel | 310S, 309S, 316L, 321, 304, 304L |
| Duplex | S32750, S32760, S31803, S32205 |
| Nickel-Based 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 |
Density
| Grade | ρ (kg/dm³) | Calculation Formula | |
| 0Cr18Ni9 (06Cr19Ni10) SUS304 TP304 | 00Cr19Ni10 (022Cr19Ni10) SUS304L TP304L | 7.93 7.9 | W=0.02491 t(D-t) W=0.02482 t(D-t) |
| 0Cr17Ni12Mo2 SUS316 TP316 | 00Cr17Ni14Mo2 SUS316L TP316L | 8.0 | W=0.02513 t(D-t) |
Production process of JCOE large diameter straight seam welded pipe:
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 Product Testing→ Marking→
Packing→ Finished Product Warehousing→ Shipping
Application:
Electric Power, Oil Refining, Nuclear Power, Drinking Water, Offshore Engineering&Shipbuilding, Natural Gas, Paper Making, Construction
Product Pictures
Company Introduction
QUALITY CONTROL
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking
100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects