Ability

As a professional butterfly valve manufacturer, ZZJG has established a dedicated cleanroom equipped with over 100 sets of production and manufacturing equipment, as well as a professional testing center.

From raw materials to finished products, we strictly control the quality of every step and hold TS Special Equipment License, ISO9001 Quality Management System Certification, ISO14001 Environmental Management System Certification, ISO18001 Occupational Health and Safety Management System Certification, API (American Petroleum Institute) Certificate, CE Certification, and EAC Certification.

Founded in 1981, ZZJG boasts over 40 years of valve manufacturing experience. With a registered capital of 103.18 million RMB and a total investment of over 70 million RMB, the company covers an area of 26,000 square meters and possesses professional factory buildings and modern office buildings, making it a leading valve manufacturing plant in China.

ZZJG has mastered advanced production and processing technology. We use MES production information management system to strictly control the quality of production process, and introduce high-precision CNC machine tools and processing centers to ensure the accuracy and efficiency of valve processing.

We employ vacuum protected welding furnace to complete the welding process on the valve. Vacuum protected welding furnace is designed for high-end industrial products, allowing materials to be welded in vacuum to ensure that there are no oxides and bubbles in the welding process, which greatly increases the stability and firmness of welding.

Titanium and zirconium valves need surface hardness modification to form a protective film on the surface to enhance corrosion resistance and greatly alleviate stress, thereby significantly improving the service life of the valve.

We pay great attention to the raw material quality, thus we have signed a long-term strategic cooperation agreement with the raw materials foundry. When the raw materials arrive at our factory, our company will use the PMI to evaluate the raw materials, and will measure the size and wall thickness of them. When the raw materials are qualified, they will be stored in the warehouse; if not, they must be returned to the foundry.

ZZJG has established professional testing centers and introduced advanced testing instruments such as Coordinate-measuring machine(CMM), direct-reading spectrometer, etc. to carry out professional testing of raw materials and products.

ZZJG adheres to the quality goal of zero defect and leakage. All of our products are assembled in dust-free workshop and tested by valve pressure test before they leave the factory.