316L 347H S32205 Stainless Seamless Steel Pipe

product features

1. Chemical analysis: Conduct chemical analysis of the chemical components of the material, and the chemical ingredients meet the standards.
2. Air pressure. Hydrostatic test For the hydraulic test, the specified pressure value is not less than 5 seconds, and no leakage is kept. The hydraulic pressure test of conventional supply is 2.45MPa. The atmospheric pressure test is P=0.5MPAa.
3. Corrosion test: the industrial corrosion resistant steel pipes shall be tested for their corrosion resistance according to the standards or the corrosion methods agreed by both parties, without intercrystalline corrosion tendency.
4. Process performance inspection: flattening test. tension test. blow-test. flaring test. hardness test. metallographic test. bend test. Nondestructive testing (including eddy current testing. X-ray and ultrasonic detection).

According to the use, it can be divided into oil well pipe (casing, oil pipe and drill pipe, etc.), pipeline pipe, boiler pipe, mechanical structure pipe, hydraulic pillar pipe, gas cylinder pipe, geological pipe, chemical pipe (high pressure fertilizer pipe, petroleum cracking pipe) and ship pipe, etc.

Manufacturing process of stainless steel seamless pipe

1. Hot rolling (extruded seamless steel pipe): round pipe billet heating perforation three roll inclined rolling, continuous rolling or extruded tube diameter (or reduced diameter reduction) cooling straightening hydrostatic test (or flaw test) mark for storage.
2. Cold pull (rolled) seamless steel pipe: round pipe billet heating perforated head, annealed acid, washing and coated oil (copper plating), multi-channel cold pull (cold rolled) billet pipe heat treatment straightening hydraulic test (flaw detection) mark into the storage.

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