... Eddy current test & Hydro test , etc Stainless steel welded tube/pipe Stainless Steel Welded Tube/Pipe: 1. Standard: GB, ASTM, JIS, ... annealed, Mechanical polishing, electrolytic polishing8. Test: Eddy current, Hydrostatic, Mechanical, Chemical composition analysis, Tensile test, Flaring test , Flattening test, etc.9. Packing ... looking forward to cooperate with you! 304 Stainless steel welded tube