1. Flanges of connecting parts fittings and pipelines at Pnom from 0,1 to 20,0 MPa (from 1 to 200 kgf/cm2) are made acc. to GOST 12815-80, GOST 12816-80, GOST 12817-80, GOST 12818-80, GOST 12819-80, GOST 12820-80, GOST 12821-81. ​

2. Connection points with flat steel welded flanges (branch pipe, flange): with smooth sealing surface, with groove, with hollow as well as connection points assembled with flanges with an opening or with plugs; with fasteners, with gasket acc. to factory restrictive normals at Pnom=16; 25, Ønom = 25 - 600. Pnom= 6, Ønom = 600,800 - with smooth sealing surface. Flange material: steel 09Г2С-15, 12Х18Н10Т, 10Х17Н13М2Т. Branch pipe material: steel 20,10Г2, 09Г2С-15,12Х18Н10Т,10Х17Н13М2Т, 10Х17Н13М3Т.​

3. Flange steel stoppers acc. to АТК 24.200-02-90: with a smooth sealing surface, with a bulge, with a tenon, with a groove. At Pnom=16; 40; 63; 100; 160. Ønom = 15 - 600. Materials: steel 09Г2С-15, 12Х18Н10Т, 10Х17Н13М2Т, 10Х17ХН13М3Т.​

4. Carbon corrosion-resistant manholes with a tenon, with a groove at Pnom = 16, Ønom = 500, 600; Pnom = 6,10, Ønom = 700.

1. Hexagon-head Bolts according to GOST 7798-70;
2. Hexagon Nuts according to GOST 5915-70;​
3. Hexagon Nuts for flanged connections на Pnom > 40 kgf/cm2 GOST 9064-75;​
4. Bilateral Studs for flanged connections according to OST 26-2040-77;​
5. Studs with screw-end with 1,25d length according to GOST 22034-76;​
6. Weld Studs for plates according to factory restrictive normals;​
7. Washers 8 – 42 according to GOST 11371-78, ST 26-2042-77.​