Hydraulic Fitting, Check Valve manufacturer / supplier in China, offering Hydraulic Fittings Male BSPP Straight Fittings Carbon Steel 1bt Connecter, SAE Straight 4 Bolt Thread Flange with BSPP Thread Pcff-G Flat Face Thread Flange, SAE Straight 4 Bolt Flange with BSPP Thread Pff-G Thread Flange and so on.