Yongjia Tong Ball Valve Co., Ltd
We are professional ball valve parts manufacturer,Include ball, seat ,stem, forging body & cap, etc, especially good at metal to metal ball & seat, Materials include stainless steel, duplex stainless steel, Hastelloy, Monel, titanium alloy, Inconel.Surface treatment includes HVOF spraying tungsten carbide, chromium carbide, Stellite, spray weld