JIS G3455 Carbon Steel Seamless Pipe For High Pressure Service
JIS G3455 Carbon Steel Seamless Pipe for High-Pressure Service
1. Material Overview
JIS G3455 specifies seamless carbon steel pipes designed for high-pressure service at temperatures up to approximately 350 °C. These pipes are manufactured from killed steel using seamless processes, available in hot-finished or cold-finished forms.
2. Specifications
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Temperature limit: up to ~350 °C.
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Outer diameter (OD): from ~10.5 mm (nominal 6A / 1/8B) up to ~660 mm, with many sources citing 15 mm to 600 mm.
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Wall thickness (WT): commonly from ~1 mm up to 50 mm; some suppliers indicate 2 mm–14 mm.
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Length: up to about 16 000 mm.
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Grades: STS 370, STS 410, STS 480, and STS 510.
3. Chemical Composition
| Grade | C (max) | Si | Mn | P (max) | S (max) |
|---|---|---|---|---|---|
| STS 370 | 0.25% | 0.10–0.35% | 0.30–1.10% | 0.035% | 0.035% |
| STS 410 | 0.30% | 0.10–0.35% | 0.30–1.40% | 0.035% | 0.035% |
| STS 480 | 0.33% | 0.10–0.35% | 0.30–1.50% | 0.035% | 0.035% |
| STS 510 | — | (similarly limited) | — | — | — |
4. Mechanical Properties
| Grade | Tensile ≥ (MPa) | Yield ≥ (MPa) | Elongation ≥ (%) |
|---|---|---|---|
| STS 370 | 370 | 216 | 30 |
| STS 410 | 410–412 | 245 | 25 |
| STS 480 | 480 | 275 | 25 |
| STS 510 | 481 | 275 | 25 |
5. Key Features
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High-pressure capabilities with excellent tensile and yield strength.
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Temperature resistance certified to ~350 °C.
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Available in versatile manufacturing forms and end finishes.
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Rigorous quality control through straightness, surface finish, and performance testing (flattening, bending, hydrostatic or nondestructive tests).
6. Applicable Standards
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JIS G3455 (Japan)—defines complete technical requirements.
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Equivalent international standards: ASTM A106 / ASME SA106, DIN 17175, EN 10216-2, GB 5310, API 5L.
7. Application Areas
General Sectors: Boilers, pressure vessels, high-pressure piping in petrochemical, chemical, power generation, refinery, mechanical systems, shipbuilding, offshore, and construction.
Specific Uses: Boiler and superheater tubes in power plants, high-pressure steam and fluid pipelines in refineries, hydraulic components, and structural pressure conduits.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
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