Blog

In API 6D ball valves: WC coating hardness reaches HRC65–75, suitable for containing 30–40% solid particles medium, wear resistance lifespan...

Under harsh working conditions, tungsten carbide valve seat usually more wear-resistant, hardness can reach HRA 88~92, lifespan often compared to...

Under strict inspection requirements, forged valve body is better: density ≥ 98%, tensile strength increased by 20%~30%, airtight leakage rate...

When valve body and valve cover need 100% RT inspection, casting pass rate is about 85%-90%, rework cost is high;...

RT inspection is radiographic flaw detection, used to discover cast steel valve internal porosity, shrinkage and other defects. According to...

In export projects, forged valve body strength is high (tensile strength ≥450MPa), suitable for high pressure (>PN100) European and American...

Cast valve body cost is lower by about 20%-30%, suitable for complex structures, but easy to have blowholes, strength slightly...

Engineering inside often uses two single ball valves replace double ball valve is because maintenance more flexible, single valve failure...

Double ball valve suitable for needs double isolation’s working conditions, like oil gas conveying pressure ≥4MPa or toxic medium pipeline,...