... Test:Eddy current & Hydrostatic test, etc. Stainless steel welded tube / pipe1. Standard: GB, ASTM, JIS ... annealed, pickling, electropolishing, mechanical polishing.8. Test: eddy current, hydrostatic test, mechanical properties test, chemical test, ... etc.9. Packing: plastic bag, seaworthy woodedn/plywood case or according to customer request. Stainless Steel ...