Products & Facility

WeChat

ABOUT US

NEWS

Quality Assurance

R&D

Investor Relations

JOIN US

Sales And Service

     @ 2018 Tongyu Heavy Industry Co., Ltd Stock code:300185

    鲁ICP备13004417号-1 鲁公网安备 37148202000125号 Powered by www.300.cn

Mobile website

SUBORDINATE SUBSIDIARIES 

QUALITY ASSURANCE

Pressure pipe component manufacturing license

Our company has obtained the manufacturing license for special equipment (pressure pipe components) since December 12, 2011, and is based on the "Rules for the manufacture of pressure pipe components", "Basic requirements for the manufacture, installation, transformation, maintenance quality assurance system of special equipment", etc. Established a quality assurance system for the manufacture of pressure pipe components. The certificate is a pressure pipe component manufacturing license issued by the General Administration of Quality Supervision, Inspection and Quarantine. The scope of application of the certificate is: A (1) (3): forging pipe, forged flange forging; B: forging Flange (limited to machining); Grade B: forged pipe fittings (limited to machining); Class A1: seamless steel pipe.