GOST 25164-1982 Connections of SSI instruments and devices with external hydraulic and gas lines. Types, basic parameters and dimensions. Technical requirements
1996GOST 25164-1996 Connections of instruments and devices with external hydraulic and gas lines. Types, basic parameters and dimensions. Technical requirements
1982GOST 25164-1982 Connections of SSI instruments and devices with external hydraulic and gas lines. Types, basic parameters and dimensions. Technical requirements