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Forged ball valve because of overall forging structure dense, strength increases about 20%-30%, pressure resistance can reach Class 1500 above,...

①Pressure rating, such as Class 1500/2500 (corresponding to about 25–42MPa); ②Material, such as A105 applicable to ≤425℃ carbon steel working...

Under high temperature (≥450℃) or strong wash working conditions, sphere choose Ni60 (hardness about HRC58-62), valve seat choose Ni55 (HRC52-56)...

Stellite in high-temperature ball valves usually is better: its melting point is about 1285–1410°C, corrosion resistance is close to stainless...

WC hardness HRC65–75, wear resistance best, suitable for containing >25% particle medium, lifespan improves 3 times but cost high about...

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;...