cold drawn seamless carbon steel tube GOST8734 ST20

ZHEJIANG LUNBAO PIPE INDUSTRY CO.,LTD which is specilized in manufacturing high quality seamless precision steel tube in china that used in a lot of filed such as autobile parts ,heavy equipment ,hydralic and pneumatic cylinder, ship building ,for boiler and drill and mechanical purpose !

our annual output is more than 50000tons ,our famour customer like Automotive supplier Tenneco and Toyota Hitachi

Over 40 intellectual property rights

Participated in the formulation of 6 national standards

Formulated 1 industry standard

4 invention patents

High-tech enterprise certificate

CE CERTIFICATE

Special equipment production license

IATF16949:2016

ISO9001-2005

ISO14001:2015

ISO45001:2018