... other size API 5L spiral welded steel pipe Product NameSpiral Pipe/Spiral Steel Pipe/Steel Pipe/Spiral Tube/Spiral Welded pipeSizeOD:159-3020MMThickness:3. ... UsageUsed For Gas, Petroleum, Water ,Oil, Structure And SewageEndsPlain or Beveled (Can be Protected By Plastic Pipe Cap ... 1-1997,API SPEC 5L ASTM A53Application:structure steel pipe,boiler pipe,petroleum,gas.Our quality policy:Facilitating quality ...