Rectangular Pipes GOST 8645-68. Rectangular Steel Pipes
Sizes, mm | Wall thickness, mm and limit deviations | ||||||||||||||
1 | 1.5 | 2 | 2.5 | 3 | 3.5 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |||
A | B | Limit deviations | Electrically welded pipes ± 10 % | ||||||||||||
Seamless cold-deformed ± 12.5 % | |||||||||||||||
Weight per running meter, kg | |||||||||||||||
10 | 0.426 | 0.605 | |||||||||||||
20 | 15 | 0.505 | 0.723 | ||||||||||||
15 | 0.58 | 0.84 | |||||||||||||
25 | 28* | ± 0.3 mm | 1.15 | 1.48 | |||||||||||
15 | 0.84 | 0.96 | 1.23 | 1.48 | 1.71 | ||||||||||
30 | 20 | 0.74 | 1.08 | 139 | 1.68 | 1.95 | |||||||||
15 | 1.08 | 1.39 | |||||||||||||
20 | 1.19 | 1.55 | 1.88 | 2.19 | |||||||||||
35 | 25 | 2.07 | |||||||||||||
30* | 1.43 | 1.86 | |||||||||||||
15 | 1.88 | ||||||||||||||
20 | 1.31* | 1.7 | 2.07 | 2.42 | |||||||||||
40 | 25 | 1.43* | 1.86 | 2.27 | 2.66 | 3.02 | 3.36 | ||||||||
28* | 1.5 | 1.96 | 2.39 | ||||||||||||
30 | ± 0.4 mm | 1.55* | 2.02 | 2.47 | 2.89 | 3.3 | 3.68 | ||||||||
20 | 2.15 | 2.52 | 2.86 | 3.17 | |||||||||||
42 | 30 | 2.54 | 2.99 | 3.41 | 3.8 | ||||||||||
20 | 1.86 | 2.27 | 2.66 | 3.02 | 3.36 | ||||||||||
45 | 30 | 2.17 | 2.66 | 3.13 | 3.57 | 3.99 | |||||||||
25 | 1.67* | 2.17 | 2.66 | 3.13 | 3.57 | 3.99 | |||||||||
30 | 1.78* | 2.32 | 2.86 | 3.36 | 3.85 | 4.3 | |||||||||
50 | 35 | 1.90* | 2.49 | 3.09 | 3.6 | 4.12 | 4.62 | ||||||||
40 | 3.25 | 3.83 | 4.39 | 4.93 | |||||||||||
20* | 2.33 | ||||||||||||||
25 | 3.05 | 3.6 | 4.12 | 4.62 | 5.55 | ||||||||||
60 | 30 | 3 | 3.25 | 3.83 | 4.39 | 4.93 | 5.94 | ||||||||
40 | 2.96* | 3.64* | 43 | 4.94 | 5.56 | 6.73 | |||||||||
30 | 4.3 | 4.94 | 5.56 | 6.73 | 7.8 | ||||||||||
70 | 40 | 4.78 | 5.49 | 6.19 | 7.51 | 8.75 | 9.89* | ||||||||
50 | 5.25 | 6.04 | 6.82 | 8.3 | 9.69 | ||||||||||
40 | 5.25 | 6.04 | 6.82 | 8.3 | 9.69 | 10.99 | |||||||||
80 | 50 | 5.72 | 6.59 | 7.44 | |||||||||||
60 | 7.14 | 8.07 | 9.87 | 11.57 | 13.19 | ||||||||||
40 | 6.59 | 7.44 | 9.08 | 10.63 | 12.09 | ||||||||||
90 | 60 | ±0.8% | 8.7 | 10.65 | 12.51 | 14.29 | |||||||||
40 | 8.07 | 9.87 | 11.57 | 13.19 | |||||||||||
0,1 | 50 | 8.7 | 10.65 | 12.51 | 14.29 | ||||||||||
70 | 9.96 | 12.22 | 14.4 | 16.48 | |||||||||||
40 | 9.33* | 11.44 | 13.46 | 15.38 | 17.22 | ||||||||||
120 | 60 | 13 | 15.34 | 17.58 | 19.73 | ||||||||||
80 | 14.58 | 17.22 | 19.78 | 22.25 | |||||||||||
60 | 14.58 | 17.22 | 19.78 | 22.25 | |||||||||||
140 | 80 | 16.15 | 19.11 | 21.98 | 24.76 | ||||||||||
60* | 20.88 | ||||||||||||||
150 | 80 | 20,05 | 23.08 | 26.01 | 28.86 | 31.62 | |||||||||
100 | 21.93 | 25.28 | 28.53 | 31.69 | 34.76 | ||||||||||
160* | 130 | 33.55 |
The pipes are manufactured electrically welded. The pipes are manufactured seamless.
The pipes are manufactured electrically welded and seamless.
- Electrically welded pipes are manufactured of steels grade 08, 08кп, 08ю, 10, 10пc, 10кп, 15, 15кп, 15пc, Cт3пc, Cт3cп, Cт3кп.
- Seamless cold-deformed pipes are manufactured of steels grades 10, 20, 35, 45, 09Г2C.
- Pipe random length is from 1.5 to 9.0 m, specified length from 5.0 to 9.0 m.
- Technical requirements as per GOST 13663/86.
- Seamless cold-deformed pipes are manufactured heat-treated.
- The pipe sizes marked with an asterisk are manufactured on agreement.
- The pipes with the flange size over 80 mm and the wall thickness over 4 mm are delivered without straightening and end cropping.
- Electrically welded pipes are manufactured without heat treatment.
- The quality of weld joint is controlled with the help of nondestructive testers.