... .3.Steel material: AISI 201/202/304/304L/316/316L 4. Size: (6mm-159mm) OD X (0.22mm-3mm) WT X ... , ship building,heater exchange, container,water and so on6. Length: 4-7m random or fixed.such as 5.8m fixed,6m ... fixed,5-7m randometc.7. Process Method: cold drawn,cold-rolling8. Polishing: 600#,400#, 320#, 240#, 180#.etc.9 ...