name:180 bend material:p11 p12 p91 p92 p5 p8 p9 st45.8 Size: 1/2"-48" Carbon Steel Elbow: Size: 1/2"-48" Thick : STD, SCH40, SCH80, SCH160 Standard: ANSI B16.9 / 16.28, ASTM A53/A106, API 5L Carbon Steel Elbow:1) Carbon steel elbows and alloy steel elbows2) Standard: ASME, ANSI, JIS, DIN3) Material: Q235,20#,alloy steel4) Size: 1/2"-36"5) Surface treatment: transparent oil, rust-proof oil, hot ...