Oilfield Ball Valve Surface Hardening
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oilfield valve Surface hardening:
oil field ball valve Spraying tungsten carbide (WC): thickness 0.3-0.5mm, hardness HRC70 or above, resistant to particle erosion.
oilfield ball valve Nitriding treatment: oilfield valve manufacturers Surface hardness HV1000 or above, suitable for sand-containing media.
