ASME B16.9 A234WPB 45 degree welding elbow Material:carbon steel,stainless steel and allloy steel Type:seamless Size:1/2"-24" ... -75 DIN2616 JISB2311 JISB2312 JISB2313materialCarbon steel(ASTM A234WPB,,A234WPC,A420WPL6. ect)Stainless steel(ASTM A403 WP304,304L,316, ... 316L,321. ect)Alloy steel(ASTM A234 WP12,WP11,WP22,WP5,WP9,WP91 ... :2000 strictly. ASME B16.9 A234WPB 45 degree welding elbow