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Help CenterSteel Pipe & Tube，S235JR, S355JR
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1. Product Name
Seamless Steel Pipe / Seamless Tube
2. Product Overview
Seamless steel pipe is a hollow section steel without welds around the surface. It is manufactured through hot rolling, cold drawing or cold rolling processes. With advantages of high pressure resistance, good toughness, high strength and long service life, it is widely used in oil and gas transportation, fluid delivery, machinery manufacturing, boiler manufacturing, construction and other industrial fields.
3. Executive Standards
- GB/T 8162 (Structure pipe)
- GB/T 8163 (Fluid pipe)
- ASTM A53, ASTM A106
- API 5L (Gr. B, X42, X52, X60, X65, X70)
- EN 10216, DIN 17175
- JIS G3454, JIS G3456
4. Material Grades
- Carbon steel: 10#, 20#, 45#, Q235B, Q355B, 16Mn
- American standard: A53 Gr.B, A106 Gr.B, API 5L Gr.B
- European standard: S235JR, S355JR
- Alloy steel: 12Cr1MoV, 15CrMo, P11, P12, P22, P91
5. Production Process
- Hot rolled seamless steel pipe
- Cold drawn / cold rolled seamless steel pipe
- Precision rolling seamless steel pipe
6. Size & Specification
- Outer diameter: 10mm - 1200mm
- Wall thickness: 1.5mm - 120mm
- Standard length: 6m, 9m, 12m, or customized length
- Shape: round seamless pipe
7. Surface Treatment
- Black painting / varnish
- Anti-rust oil
- Shot blasting
- Galvanized (hot dipped / electro galvanized)
- Beveled ends, plain ends, threaded ends
8. Mechanical Properties
- High tensile strength and yield strength
- Excellent pressure resistance and corrosion resistance
- Good plasticity, toughness and fatigue resistance
- Stable performance under high temperature and low temperature
9. Application Scope
- Fluid transportation: water, gas, oil, steam
- High pressure boiler and heat exchanger
- Petroleum casing, oil pipeline, natural gas pipeline
- Mechanical structure, hydraulic equipment, automobile parts
- Construction engineering, shipbuilding, power engineering
- Chemical industry and high-pressure equipment
10. Packing & Delivery
- Packing: steel bundle, wooden case, pallet
- End protection: plastic cap or iron cap
- Transport: sea freight, land freight, container shipping
- Suitable for long-distance export transportation
11. Delivery Condition
- Hot rolled / cold drawn
- Normalized, annealed, quenched or as required
- By theoretical weight or actual weight
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