Alloy pipe, all kinds of specification is available.We can meet your every requirement. Good quality! 1) Specification:a) O.D.: 10- 630mmb ... ) Wall thickness: 1 - 60mm2)Material:20#,45#,16Mn,20G ... : 20#,45#,16Mn,27SiMn,12Cr1MoV,15CrMo,10CrMo910,Cr5Mo,WB36 Alloy seamless Pipe