Large Diameter Seamless Steel Pipe | Hot Rolled & Hot Expanded Carbon Steel Tube
Large diameter seamless steel pipe is solid‑billet manufactured pipe without welding seam. Available in hot‑rolled and hot‑expanded processes for carbon steel, alloy & stainless steel. Widely used for fluid transportation, petrochemical, power and structural engineering. MTC / MTR certification provided upon request. Custom sizes, end finishing and anti‑corrosion treatment are available.
Heavy‑wall Seamless Steel Tube
Applications: hydraulic cylinder barrel, pressure vessel, machinery parts, bushing, mining & petroleum equipment, machining blanks.
MTR certificates available, custom specifications supported.
Alloy Seamless Steel Tube
Supply alloy seamless steel tube in 16Mn,40Cr,15CrMo,12Cr1MoV,42CrMo grades. Hot‑rolled & cold‑drawn options. Approximate international equivalent grades, custom sizes and MTR test report available for boiler, petro‑chemical & machinery use.
Fluid‑service seamless steel tubes
Fluid‑service seamless steel tubes are pressure‑bearing seamless steel tubes designed for conveying media such as water, oil, gas and steam. Primarily applied for pressure piping, these tubes are subject to mandatory hydrostatic testing on every single piece per GB/T8163‑2018 to prevent pressure‑induced pipeline leakage.
Seamless steel pipes for petroleum use
Process: Hot rolling quenching and tempering, phosphating treatment
Surface: Clean inner and outer walls without rust or dents
Ra≤：3.2‑6.3μm
Material: commonly used 27SiMn, J55, N80
Specification: Outer diameter 60-508mm, wall thickness 4-36mm customizable
Line pipe
Line pipe is specially designed for long‑distance transportation of crude oil, natural gas, refined oil and water fluid. Manufactured in accordance with API 5L, ISO 3183 and GB/T 9711, including seamless line pipe and welded line pipe. Widely applied for on‑land long‑distance pipeline, oil & gas field gathering pipeline, city gas network and plant process piping
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