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 ... St45.8 Stainless steel: 1.4301, 1.4306, 1.4401, 1.4571 Alloy steel: 1.7335, 1.7380, 1.0488 (1.0566) JISCarbon steel: PG370 ...