ASTM A234 WP22 Seamless Alloy Steel Elbow size:1/2"--48" Material: carbon steel , stainless steel , alloy steel ASTM A234 WP22 Seamless Alloy Steel ElbowGood quality, good creditColor and size can ... JISB2311 JISB2312 JISB2313materialCarbon steel(ASTM A234WPB,,A234WPC,A420WPL6.,ect)Stainless steel(ASTM A403 WP304,304L,316,316L,321.,ect)Alloy steel(ASTM A234 WP12 ...