Product Quality Assurance

Zhangzhou Stronghold Steel Works Co., Ltd. is led by a management team of twelve (12) highly qualified foreign and Chinese managers. Its technical team, on the other hand, has 15 licensed and experienced foreign and Chinese engineers. Equipped with highly-qualified personnel, the organization adopts internationally-accepted management systems and practices.

The company takes pride in securing a number of internationally recognized certificates:

AMERICAN PETROLEUM INSTITUTE (API) 5L

(American Petroleum Institute, U.S.A.)

AMERICAN PETROLEUM INSTITUTE (API) 5CT

(American Petroleum Institute, U.S.A.)

ISO 9001:2000

FACTORY PRODUCTION CONTROL CERIFICATE TO BC 1:2008

(Det Norske Veritas or DNV)

MANUFACTURE LICENSE OF SPECIAL EQUIPMENT

(People’s Republic of China)

Quality Testing Equipment

The company has a Quality Assurance (QA) laboratory equipped with complete testing and inspection facilities:

100 tons of Universal Testing Machines:

• Drop-weight impact testing machine
• Pendulum-type impact testing machine
• 3000-times Metallographic Analyzer
• Sclerometer
• Metal chemical composition analyzer
• Magnetic Flaw Detector

On-site production quality monitoring equipment:

• UT testing machine

Other pipe-testing equipment:

• UT offline
• X-ray (RT)
• Eddy current weld inspecting machine
• Hydrotesting machine
• Anti-corrosion coating thickness tester