... Certifications : ISO9001-2000 API CE 5)Standard: ASTM BS GB JIS APISize(O.D)Wall thickness ( ... Inspection, Also With Nondestructive InspectionUsage/ApplicationMechanical & manufacture, Steel structure,Shipbuilding, Bridging ,Automobile chassisWater Pipelines, Waste waterlines , ... policy as "Quality for Survival, Product for Development, Credibility for Cooperation and Service for Customer". And hold ...