... dryer, window guards, ship building,heater exchange, container,water and so on 6. Length: 1-6m ... ' requirements. 7. Process Method: cold drawn,cold-rolling 8. Polishing: 600#,400#, 320#, 240#, 180 ... tig welded and protected by Nitrogen. 10. Quality guarantee: ISO 9001 products picture show products ... facilitiesour certificatesour familycontact me high quality with competitive price stainless steel pipe