Changzhou Tongchuang Tube Industry Co., Ltd in China.
We produce and supply kinds of Seamless steel tubes with good quality and competitive price,pecialized in cold drawn seamless pipe and precision steel pipe,OD from 8mm-168mm and WT from 0.8mm-20mm could be ordered,can widely used in the fields of petrloeum,construction,boilers,ship building,mechanic,chemical and so on.
Our company have the certification of ISO9001:2008 issued by CCSC, ISO1400I:2004 environment management system,API5L,API5CT.In the early 2010,we were certificated by SINOPEC and become one of their regular suppliers. The products comply with national and international standards such as API、ASTM/ASME、DIN、EN、JIS、BS、GB etc..
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