As a professional ball valve manufacturer, our company has established a comprehensive Physical and Chemical Laboratory equipped with advanced testing and analysis instruments. This enables us to conduct allencompassing quality control and performance verification on raw materials, components, and finished products, ensuring they meet relevant standards and stringent customer requirements.

SGTek operates a leading flow laboratory in China. The laboratory has a total of four flow test lines, 1"/2"/4"/12". For testing pressure regulators, the maximum inlet pressure is up to 10 MPa, the maximum diameter is up to DN300, and the flow rate is up to 100,000 m3/h. The laboratory also has one high- and low-temperature test line and two durability test lines. The fully equipped and highly capable laboratory provides reliable support for SGTek's pressure regulator R&D capabilities and product performance. The laboratory is capable of testing the following performance aspects in strict compliance with the relevant provisions of the Chinese standard GB27790-2020 Urban gas pressure regulators and the European standard EN334 Gas pressure regulators for inlet pressure up to 100 bars: hydraulic strength, external sealing, static characteristics, durability, flow coefficient, high and low temperature resistance, and diaphragm immersion performance of pressure-bearing parts. It is aligned with the requirements of EU CE-PED certification in all respects.

Our company has established an independent Non-Destructive Testing  (NDT) laboratory for comprehensive quality control of materials and  welded parts, ensuring the safety and reliability of every ball valve: 

 1. We use various testing methods, including ultrasonic (UT),  radiographic (RT), and penetrant testing (PT), to conduct full-coverage  inspections of castings, forgings, and welds, enabling the timely  detection of defects such as cracks, porosity, and slag inclusions. 

 2. We utilize advanced inspection and simulation technologies to  assess the structural integrity of critical pressure-bearing components  like the valve body and bonnet, ensuring they meet the requirements  for long-term service

Our company has established a comprehensive pressure testing  system in strict accordance with API 6D, GB/T 19672, and other  relevant standards to ensure the safe and reliable operation of our ball  valves under high pressure and complex working conditions. 

1. Shell Hydraulic Test: Verifies the strength and structural integrity of  the valve body and pressure-bearing components to ensure an  adequate safety factor. 

2. Hydraulic Seat Test: Inspects the valve's sealing performance with  liquid medium, ensuring no leakage or leakage within the standard  permissible range at the seat and sealing interface.  

3. Low-Pressure Gas Seal Test: Detects the sealing performance of  soft-seated ball valves under low-pressure gas conditions to ensure  zero leakage during normal operation.  

4. High-Pressure Gas Seal Test: Simulates actual high-pressure gas  operating conditions to verify the sealing reliability of the valve at its  rated pressure. For the most demanding applications, helium mass  spectrometry leak detection can be employed to measure leakage  rates far below standard limits, ensuring the product meets long-term,  zero-leakage service requirements.