... , Q235 , ST 52 , ST374) Standards of Steel Pipe: ASTM A106 , ASTM 53 , API 5L and etc.5) Surface of Steel Pipe ... ,DIN1626,DIN2448,DIN17120,API 5L, API 5CT, ASTM A106, ASTM A53,ASTM A179,ASTM A210,ASTM A36,JISG3454,JISG3455,JISG3556,GOST8732,GOST8731MaterialGr. B, ... STB410Size1"-24"(33.4mm-610mm)Wall thicknesssch10,sch20,sch30,sch40,STD,sch60, XS,sch80,sch100, sch140,sch160,XXSPackagingBundle ...