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| Cylindrical Shell |
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| Main Product |
| Code |
No. |
Classification & Grade |
Description |
KS
(JIS) |
D3583
(G3457) |
SPW400, STPY400 |
Arc Welded Carbon Steel pipes |
D3566
(G3444) |
STK 290, 400, 490, 500, 540 |
Carbon Steel Tubes For General Structural Purposes |
| ASTM |
A134 |
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Electric-Fusion(Arc)-Welded Steel Pipe (NPS 16 & Over) |
| A139 |
A, B, C, D, E |
Electric-Fusion(Arc)-Welded Steel Pipe (NPS 4 & Over) |
| A671 |
CA55, CB60, CB65, CB70, CC60, CC65, CC70, CD70.. |
Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures |
| A672 |
A45, A50, A55, B55, B60, B65, B70, C55, C60, C65, C70, D70 |
Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures |
| A691 |
CM-65, CM-70, CM-75, CMSH-70, CMSH-80, CMS-75, 1/2CR, 1CR, 3CR, 5CR, 9CR, 91 |
Carbon and Alloy Steel Pipe Electric-Fusion-Welded for High-Pressure Service at High Temperatures |
| A500 |
Grade : A, B, C, D |
Cold-Formed Welded and Seamless Carbon Structural Tubing in Rounds and Shapes |
| A252 |
Grade : 1, 2, 3 |
Welded and Seamless Steel Pipe Piles |
| API |
5L |
Grade : A, B, X42~80 |
Line Pipes |
| 2B |
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The Fabrication of Structural Steel Pipe |
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| Size Availability |
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| Technical Highlights |
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Fabrication scope: Cylindrical shells for pressure equipment and structural pipe are built from qualified plate, rolled to diameter, then joined by longitudinal and girth welds under procedures matched to your code (e.g. ASME VIII, project specs). |
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Materials & standards: Carbon, alloy, and stainless grades are supplied per ASTM / API / KS-JIS listings in the table above; MTC, heat numbers, and replates follow your ITP and traceability rules. |
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Welding & heat treatment: SAW / GMAW / FCAW and other qualified WPS can be applied; PWHT or stress relief is scheduled when thickness and code require it. |
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Inspection & tests: Dimensional checks, NDT (UT/RT/PT/MT as specified), and hydrostatic or pneumatic tests are released with reports before shipment - send ID/OD, length, thickness, design pressure, and code for a feasibility review. |
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Related topics & terms
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