FAQ

API 5L Grade B Seamless Steel Line Pipe

Almost 90% of the petroleum projects adopts API 5L Grade B line pipe. Which including steel pipes manufacturing process in ERW, LSAW, SSAW and seamless. In case in seamless type, the pipe diameters usually below 16” (406 mm), wall thickness in pipe schedule of SCH 40, SCH STD, SCH 80, SCH XS, and to SCH XXS, until SCH 160. Because of the hot rolled manufacturing process, API 5L B seamless steel line pipe usually refer to the pipe that in small and medium diameters, with thick wall thickness. Large diameters and thin thickness line pipe usually refer to the ERW and SAW steel line pipe.

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