CHANGZHOU TONGHENG METAL&TUBES CO.,LTD is a professional
manufacturer and leading supplier of higher quality carbon steel
tubes,stainless steel tubes, precision steel tubes,alloy pipes.
Our factory covers 80000square meters with the permanent assets of
USD8000000. Employing more than 300 workers, 40engineers.
TONGHENG holds ISO9001 Quality management system
certification,special equipment manufacturing license,international
attestation such as API 5L.
TONGHENG have a good relationship with local and oversea
customer,we provide: Quality Products,Excellent Service and