... ,300,400 series 3.Diameter:6-360mm Stainless Steel Round Bar 1) Grade : 321, 304, 304L, 316, 316L, 317, 317,310S 2) Processing ... :cold/hot drawn,cold rolled etc.Stainless Steel Round Bar1) Outside Diameter ... best attention all the time. type stainless steel round bar size3 mm to 240mmgrade321, 304, 304L, 316, 316L, 317, 317L,310s,904L etc ...