Shenyang Yenghe metalware co.,ltd is an American sole source investment co.,ltd which was established in shenyang,china since 1995. our company is a main manufacture and exporter of American standard welded steel tubes, square and rectangle tube. Bright or black. Wall thickness ranges from 0.6mm to 3.0mm. OD ranges from 12mm to 65mm we can produce according to the client's demands. our products are well sold in the worldwide markets. we promise to offer you a competitive price with high quality.