| About us |
TIANJIN SHUANGJIE STEEL PIPE is a dedicated manufacturer of hot galvanized steel pipe.In 1997 SHUANGJIE passed the ISO9002 and obtained Certificate of API in 2001.Our products used in water supply,gas supply and oil transportation pipeline,plastic coating pipe and scaffoldings for construction,with an annual output up to over 200 thousand metric tons.We can meet different standard specification such as GB,BS,ASTM-A53,API-5L.Since 1981,our products have export to other countries. relying on high quality and credit our products won admirable reputation in international market. |
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