... require *Surface: painted or oiled 1.Technique: cold drawn or hot rolled2.Length range: 4m-12m as customer require3.End treatment ... , or as customer's requirements5.Application:petroleum,gas,construction,boiler,chemical,shipbuilding,foodstuff,papermaking,medical equipment,etc.6.High quality: certificate ... ISO9001, API, CE, CPD API 5L GR. X52 PSL 2 Steel Pipe