Answer: stainless steel : 304/L,316/L,347H,316Ti,317/L,253Ma,904L, Duplex Steel: S31254(254SMo）S31803;S32205;S32750;S32760 Alloy steel: Monel400/K500; Inconel600/601/625/718/725/617/740; HastelloyalloyC22/C276/C2000/B/B2/B3/X/230/G2/G3/G30/G35; Incoloy800/H/HT/8028/825/8330/840/925/926/8120; Ni200;Ni201;Alloy20; Customization according to ASTM/EN/JIS/GB standards is available.
Seamless pipe has no welding seam, featuring higher pressure bearing capacity, stronger corrosion resistance and higher dimensional accuracy, which is suitable for high-pressure/high-temperature/corrosive working conditions (such as petroleum, chemical industry, boiler). Welded pipe has a welding seam with lower cost, suitable for low-pressure fluid transmission.
For stainless steel: ASTM A312/A269/A789, EN 10216, GB/T 14976; For alloy steel: ASTM B163( ASME SB163) ,ASTM B165(ASME SB165), ASTM B167(ASME SB167), ASTMB444 (ASME SB444)EN 10216, GB/T 8163.
We adopt Hot Rolling (Hot Extrusion) + Cold Drawing (Precision Rolling) process to ensure seamless without welding seam. Process flow: Round Billet → Heating → Piercing → Hot Rolling → Cold Drawing → Heat Treatment → Finishing → Inspection.
We can provide MTC (Mill Test Certificate EN 10204 3.1/3.2), Chemical Composition Report, Mechanical Property Report, Non-destructive Testing (UT/ET/RT), Hydro-static Test, ISO 9001, PED, CE.
Yes, we support third-party inspection by SGS, BV, TUV, Intertek etc., and whole-process supervision of production is available.
