GOSTs 管件 GOST 30753-2001 Carbon and low-alloy steel butt-weldings fittings. Sharply curved bends type 2D (R=DN).Design 碳钢和低合金钢对焊管件。大弯2D(R=DN)

GOST 17375-2001 Carbon and low-alloy steel butt-welding fittings. Sharply curved bends type 3D (R=1,5 DN).Design 碳钢和低合金钢对焊管件。大弯3D(R=1.5DN)

GOST 17376-2001 Carbon and low-alloy steel butt-welding fittings.Tees. Design 碳钢和低合金钢对焊管件。三通

GOST 17378-2001 Carbon and low-alloy steel butt-weldings. Reducers. Design 碳钢和低合金钢对焊管件。异径管

GOST 17379-2001 Carbon and low-alloy steel butt-welding fittings. Elliptical caps. Design 碳钢和低合金钢对焊管件。椭圆管帽

GOST 17380-2001 Carbon and low-alloy steel butt-weldings fittings. General specifications 碳钢和低合金钢对焊管件。通用尺寸

GOSTs 法兰 12815-80 Flanges for valves, fittings, pipelines for Pnom from 0.1 to 20 MPa (from 1 to 200kgf/sm2). Types. Connecting dimensions 压力0.1到20Mpa，用于阀门，管件，管道的法兰。种类 & 连接 12820-80 Welded flat steel flanges for Pc from 0.1 to 2.5 MPa ( from 1 to 25kgs/sm2). Construction and dimensions. 压力0.1-2.5Mpa的平焊钢制法兰 12821-80 Butt welded steel flanges for Pc from 0.1 to 20 MPa ( from 1 to 200 kgs/sm2). Construction and dimensions. 压力0.1-20Mpa的对焊钢制法兰