O.D.:219~2020 W.T.:6~25 Material:Q235B,Q345B,API5L X42~X80;20#,16Mn, Standard:GB ... /T9711.1-1997;GB/T9711.2-1999;API 5L Spiral Steel Pipe Specifications:1.Ourter Diameter:219~3020mm ... .Length:6~12m; or as per customized size;4.Material:Q235B,Q345B,20#,16Mn,L245~L485;API5L Grade B,X42 ... for all steel pipes by our skilled shipping agent. API PipelineSteel Pipe/SSAW Steel Pipe/Spiral Steel Pipe