... elbow2) Material: stainless steel (316L, 304L, 321, 321H), carbon steel, alloy steel 3) Size: 1/2" -64"4) Standard: ANSI, GB ... of special materials, such as: hastelloy, Cu-Ni alloy,Ni alloy, Zr alloy, Ti alloy, low-temperature alloy, austenitic stainless steel,duplex stainless steel, super duplex ...