Questions & Answers
Steel plugs are made of: 25, 20, St3sp, St3ps, 15, 10, 17G1S-U, 17G1S, 16GS, 15GS, 10G2, 09G2S, 30KhGSA, 40KhN, 35KhM, 40Kh, 30Kh, 20Kh, 20KhM, 15KhM, 12KhM, 15Kh5M, 12Kh1MF.
Steel threads are made of: St45, St35, St20, St10, 17G1S, 10G2, 09G2S, 20Kh, 35Kh, 30KhMA, 40Kh.
Steel bends are made from: 10Kh9MFB, 20KhM, 15KhM, 12KhM, 15Kh5M, 12Kh1MF, 25, 20, 10, St3sp, St3ps, 17G1S-U, 09G2S, 17G1S, 16GS, 15GS, 10G2, 30KhGSA, 40KhN, 35KhM, 40Kh, 30Kh, 20Kh.
Steel couplings are made from: St25, St20, St3sp, St3ps, St15, St10, St2, 17G1S, 16GS, 15GS, 10G2, 09G2S, 30KhGSA, 40KhN, 35KhM, 40Kh, 30Kh, 20Kh.
Steel gate valves are made from: St45, St35, St25, St20, 10G2, 17G1S, 16GS, 09G2S, 12MKh, 20KhM, 15Kh5M, 12Kh1MF, 09G2SL, 20GL, 35L, 25L, 20L.
Steel transitions are made from: 25, 20, 10, St3sp, St3ps, 17G1S-U, 17G1S, 16GS, 15GS, 10G2, 09G2S, 30KhGSA, 40KhN, 35KhM, 40Kh, 30Kh, 20Kh, 10Kh9MFB, 20KhM, 15KhM, 12KhM, 15Kh5M, 12Kh1MF.
Steel tees are made from: St45, St20K, St35, St20, St10, 15KhM, 12KhM, 15Kh5M, 17G1S, 10G2, 09G2S, 12Kh2MFSR, 20KhML, 15Kh1M1F, 12Kh1MF.
Steel flanges are made from: 20, 15, 10, St5, St2, St0, St3sp, St3ps, 17G1S-U, 17G1S, 16GS, 15GS, 10G2, 09G2S, 40KhN, 38KhA, 35KhM, 40Kh, 30Kh, 20Kh, 40G, 30G, 20G, 35G.
The main GOST standard for steel plugs is:
GOST 17379-2001 - Design of elliptical plugs. Seamless welded pipeline components made of low-alloy and carbon steel. This standard establishes: marking, quality control, requirements for weld edges and manufacturing, dimensions, operating temperature, working pressure, diameters, materials of manufacture, design and purpose of plugs.
The main GOST standard for steel threads is:
GOST 24705-2004 - Metric threads. Main dimensions and interchangeability standards. This standard regulates: quality control, manufacturing methods and materials, designations, tolerance zones, main dimensions and thread parameters.
The main GOST standard for steel elbows is:
GOST 17375-2001 - Design of seamless welded pipeline components made of carbon and low-alloy steel. Elbows. The standard establishes: marking, quality requirements, manufacturing technology, operating temperature, working pressure, size range, materials of manufacture, bend radius, design, and purpose of elbows.
The main GOST for steel couplings:
GOST 8969-75 - Technical specifications for steel couplings. This standard regulates: marking, quality control, purpose, manufacturing and surface quality requirements, threads, coupling designs and lengths, nominal bores, materials of manufacture, and coupling design.
The main GOST for steel gate valves:
GOST 5762-2002 - General specifications for pipeline valves. Gate valves for nominal pressures not exceeding PN 250. This standard establishes: manufacturing and quality requirements, marking, testing, connection methods, operating temperature, nominal pressure, and types of steel gate valves.
The main GOST standard for steel transitions:
GOST 17378-2001 - Design of seamless welded pipeline components made of low-alloy and carbon steel. Transitions. This standard regulates: scope of application, marking, quality control, requirements for weld edges, manufacturing methods, working pressure, materials of construction, design, purpose, and types of transitions.
The main GOST standard for steel tees:
GOST 17376-2001 - Design of seamless welded pipeline components made of low-alloy and carbon steel. Tees. This standard establishes: marking, scope of use, quality control, requirements for weld edges, types, manufacturing methods, working pressure, materials of construction, dimensions, and design of tees.
The main GOST standard for steel flanges:
GOST 33259-2015 - Design, general technical requirements, and dimensions of pipelines and fittings for nominal pressures up to PN 250. Valve flanges. The standard regulates: area of use, quality requirements, marking, testing, manufacturing methods, operating temperature, materials of manufacture, nominal pressure and types of flanges.
Table of weights of steel plugs
| Dу (DN) | Outer diameter, mm | Weight, kg |
| 15 | 21,3 | 0,1 |
| 20 | 26,8 | 0,15 |
| 25 | 33,5 | 0,25 |
| 32 | 42,3 | 0,45 |
| 40 | 48,3 | 0,6 |
| 50 | 60,3 | 0,9 |
| 65 | 76,1 | 1,4 |
| 80 | 88,9 | 2,0 |
| 100 | 114,3 | 3,2 |
| 125 | 139,7 | 4,8 |
| 150 | 168,3 | 7,0 |
| 200 | 219,1 | 12 |
| 250 | 273 | 18 |
| 300 | 323,9 | 26 |
| 350 | 355,6 | 36 |
| 400 | 406,4 | 50 |
| 450 | 457 | 65 |
| 500 | 508 | 85 |
| 600 | 610 | 130 |
Table of steel thread weights for a threaded pipe section, L = 100 mm
| DN (mm) | Outer diameter, mm | Wall thickness, mm | Weight, kg |
| 15 | 21,3 | 2,8 | 0,13 |
| 20 | 26,8 | 2,8 | 0,17 |
| 25 | 33,5 | 3,2 | 0,26 |
| 32 | 42,3 | 3,2 | 0,4 |
| 40 | 48 | 3,5 | 0,5 |
| 50 | 60 | 3,5 | 0,7 |
| 65 | 75,5 | 3,5 | 1,0 |
| 80 | 88,5 | 4,0 | 1,3 |
| 100 | 114 | 4,0 | 1,9 |
Table of weights of steel 90° elbows
| Dу (DN) | Outer diameter, mm | Weight, kg |
| 15 | 21,3 | 0,15 |
| 20 | 26,8 | 0,25 |
| 25 | 33,5 | 0,4 |
| 32 | 42,3 | 0,7 |
| 40 | 48,3 | 0,95 |
| 50 | 60,3 | 1,4 |
| 65 | 76,1 | 2,1 |
| 80 | 88,9 | 2,9 |
| 100 | 114,3 | 4,5 |
| 125 | 139,7 | 6,5 |
| 150 | 168,3 | 9,5 |
| 200 | 219,1 | 16,5 |
| 250 | 273 | 25 |
| 300 | 323,9 | 35 |
| 350 | 355,6 | 48 |
| 400 | 406,4 | 65 |
| 450 | 457 | 85 |
| 500 | 508 | 110 |
| 600 | 610 | 160 |
Steel coupling weight chart:
For a spigot length of 50 mm
| Dу (DN) | Outer diameter, mm | Weight of 1 piece, kg |
| 15 | 21,3 | 0,15 |
| 20 | 26,8 | 0,25 |
| 25 | 33,5 | 0,4 |
| 32 | 42,3 | 0,65 |
| 40 | 48,3 | 0,9 |
| 50 | 60,3 | 1,4 |
| 65 | 76,1 | 2,2 |
| 80 | 88,9 | 3,0 |
| 100 | 114,3 | 4,8 |
For a spigot length of 150 mm
| Dу (DN) | Weight of 1 piece, kg |
| 15 | 0,45 |
| 20 | 0,75 |
| 25 | 1,2 |
| 32 | 2,0 |
| 40 | 2,7 |
| 50 | 4,2 |
| 65 | 6,6 |
| 80 | 9,0 |
| 100 | 14,4 |
For a spigot length of 100 mm
| Dу (DN) | Weight of 1 piece, kg |
| 15 | 0,3 |
| 20 | 0,5 |
| 25 | 0,8 |
| 32 | 1,3 |
| 40 | 1,8 |
| 50 | 2,8 |
| 65 | 4,4 |
| 80 | 6,0 |
| 100 | 9,6 |
Table of steel rod weights (kg/piece)
| DN (mm) | Weight (kg) |
| 15 | 4 – 6 |
| 20 | 5 – 8 |
| 25 | 7 – 10 |
| 32 | 9 – 14 |
| 40 | 12 – 18 |
| 50 | 15 – 25 |
| 65 | 20 – 35 |
| 80 | 25 – 45 |
| 100 | 35 – 60 |
| 125 | 50 – 85 |
| 150 | 70 – 120 |
| 200 | 110 – 180 |
| 250 | 180 – 280 |
| 300 | 250 – 400 |
| 350 | 350 – 550 |
| 400 | 450 – 700 |
Table of steel transition weights
| Du larger / smaller | Dн × dн, mm | Weight, kg |
| 25×15 | 33,5×21,3 | 0,3 |
| 32×20 | 42,3×26,8 | 0,45 |
| 40×25 | 48,3×33,5 | 0,65 |
| 50×32 | 60,3×42,3 | 1,0 |
| 65×40 | 76,1×48,3 | 1,4 |
| 80×50 | 88,9×60,3 | 1,9 |
| 100×65 | 114,3×76,1 | 3,0 |
| 125×80 | 139,7×88,9 | 4,5 |
| 150×100 | 168,3×114,3 | 6,5 |
| 200×150 | 219,1×168,3 | 11 |
| 250×200 | 273×219,1 | 17 |
| 300×250 | 323,9×273 | 25 |
| 350×300 | 355,6×323,9 | 34 |
| 400×300 | 406,4×323,9 | 42 |
| 500×400 | 508×406,4 | 70 |
| 600×500 | 610×508 | 110 |
Steel Tee Weight Chart
| DN (mm) | Dн (mm) | Wall thickness (mm) | Weight, kg |
| 15 | 21.3 | 2.8 | 0.09 |
| 20 | 26.8 | 2.8 | 0.12 |
| 25 | 33.5 | 3.2 | 0.18 |
| 32 | 42.3 | 3.5 | 0.3 |
| 40 | 48.3 | 3.5 | 0.36 |
| 50 | 60.3 | 3.5 | 0.55 |
| 65 | 76.1 | 3.5 | 0.85 |
| 80 | 88.9 | 4.0 | 1.2 |
| 100 | 114.3 | 4.0 | 1.95 |
| 125 | 139.7 | 4.5 | 3.1 |
| 150 | 168.3 | 4.5 | 4.5 |
| 200 | 219.1 | 6.0 | 8,5 |
| 250 | 273 | 7.0 | 14.5 |
| 300 | 323.9 | 8.0 | 22 |
Steel Flange Weight Table
| Dу (DN) | Weight of flat flange, kg | Weight of collar flange, kg |
| 15 | 0,5 | 0,8 |
| 20 | 0,7 | 1,1 |
| 25 | 1,0 | 1,5 |
| 32 | 1,5 | 2,2 |
| 40 | 2,0 | 3,0 |
| 50 | 2,8 | 4,2 |
| 65 | 3,8 | 5,8 |
| 80 | 5,0 | 7,5 |
| 100 | 7,5 | 11 |
| 125 | 10 | 15 |
| 150 | 13 | 19 |
| 200 | 20 | 30 |
| 250 | 30 | 45 |
| 300 | 42 | 65 |
| 350 | 60 | 90 |
| 400 | 80 | 120 |
| 500 | 120 | 180 |
| 600 | 170 | 250 |
| 700 | 230 | 340 |
| 800 | 300 | 450 |
| 900 | 380 | 570 |
| 1000 | 480 | 720 |