... steel pipes 2.O/A trade product 3.seamless,welded,erw,ssaw,lsaw pipes 4.API,CE,ISO 5.foucs on oil and gas ... ---50mmLengthRandom or fixedUsageLine Pipe,Casing And Tubing,Fluid Pipe, Water Delievery,Heating Pipe,Power Pipe,Structure Pipe,Scaffold,Piling PipeManufacture ... Test,Metallographic ExaminationFinal Product TestHydraulic Test, On-line and off-line Ultrasonic Test,Tensile Test ,Yeild Strength, ...