... API anticorrosive steel pipe: Size: 1/2"-48" Thickness: SCH10-SCH160,SGP,STD,XS,XXS Standard: ASTM,DIN,BS Material:ASTM A23 API ... anticorrosive steel pipe with good quality :anticorrosive pipeHigh quality, ... ,Cold Rolled,EFW,ERW,Hot Rolled,SAW.and so on.Structure type: seamless pipe,straight steel pipe,square pipe,spiral pipe ,and so on ...