... A106, AA53, API J55, K55, L80, P110, Seamless Carbon Steel pipe: Standard: ASTM, API, JIS, GB, DINGrade: ASTM A106, A53, ... . Best Regards, Application:(1)With high carbon seamless steel pipe equipment standards(2)Used in the industries of petroleum, chemical ... Fertilizer making equipment(6)Over-heat pipe for low-and-medium pressure boiler, boiling water pipe, locomotive smoke pipe(7)Fluid feeding(8)For ...