D. H. Exports Pvt. Ltd. Offers Cold Drawn Stainless Steel Hexagonal Bars. D. H. Exports Pvt. Ltd. Is an ISO 9001:2000 registered company. D. H. Exports Pvt. Ltd. Manufactures stainless steel products. Cold Drawn Stainless Steel Hexagonal Bars is available in the size of 4.00 - 40.00mm. Cold Drawn and Polish Stainless Steel Round Bars is available in 3/16" - 1. ½"inch. This bar is h11 ISO tolerance. It is available in polished and ground execution. These bars are available in alloy steel, stainless austenitic steel, ferritic steel as well as martenisitic steel grades.