pipe line 1.API 5L GRB,X42,X52 PSL1,PSL2 2 ... 3.Competitive price and Fast delievery 520-650 USD/Ton pipe line 1.API 5L GRB,X42,X52 PSL1,PSL2 2. ... Thickness1.5mm----52mmLength5m-----12 mUsageLine Pipe,Casing And Tubing,Fluid Pipe,Water Delievery,Heating Pipe,Power Pipe,Structure Pipe,Scaffold,Piling PipeManufacture ProcessesRaw material ... the production process are made under the ISO9000.,API5L pipe line