... machines,1 three-roller rolling machines,5 broaching machines, 3 acid wash pools, 2 vacuum bright Annealing furnaces and a range ... can are widely used in trades of decoration,petroleum, smelting, food, water conservancy, electric power, chemical industry, chemical fiber and medical ... ) Pipe diameter : 6mm-630mm pipe thickness : 0.8mm-25mm 2) Grade : 304,304L,316,316L,321,317L,310S,904L and so ...