socket welding steel flange carbon steel flange ; stainless steel flange socket welding steel flange 1,30years focus on QA2,decades experience of Canton Fair3,ISO 9001 2000Type: socket welding flangeStandard: ANSI, MSS, API, AWWA, DIN, JIS, BS and GB.Size:1/2"to 24".Materials: Carbon steel, stainless steel and alloy steel.Printing: Carbon steel and alloy steel with yellow print, blackPrint, oil ...