... POLISH,ACID,HL,200# polishing, 400 # polishing 202 welded tube Stainless steel is a production which not easy rust,acid ... 709,ASTMA302,ASTMA537,API X52,API X 42 and so on.specificationThickness:0.5mm-140mmProduction technologyHot rolledCold rolledsortingPressure vessel plate, ... Please contact me without any hesitition if you have any problems of our products !Liaocheng Yingfa Company will offer warm- ...