... 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 ... flanges andForgings that customers require. socket welding steel flange