... )InspectionWith Hydraulic Testing, Eddy Current , Infrared or X-Ray TestAlso With Chemical And Physical Property InspectTechniqueHot Rolled and ... steel pipe,boiler pipe,petroleum,gas.Our quality policy:Facilitating quality,Servicing honesty,Keep rasing,Pursuing excellence.Our ... principle of managemennt:Dedicated manufacture,High quality,Dependent honesty,Best service. API 5L spiral welded ...