1. weld, seamless, forged elbow 2. pipe fitting 3. carbon, stainless steel, alloy steel 4. ASME, DIN, JIS, GB WeldSeamless Nominal SizeDN250-DN1800DN15- DN700 Wall ThicknessSTD, XS, XXS, SCH10, SCH20, SCH30, SCH40, SCH60, SCH80, SCH160, ETC Bending RadiusR=1.5D-10D Bending Angle45°, 90° , 180° Standard ASMEANSI B16.9, ANSI B16.28, MSS SP75 DINDIN2605, DIN2615, DIN2616, DIN2617, DIN28011 SGPJIS ...