GOST 9567-75
Precision steel tubes. Range
This standard is applied to steel pipes of particular accuracy after cold drawing or hot rolling.
Cold drawing pipes are produced of the following length:
Not fixed length – from 1 to 11.5 m
Fixed length – from 4.5 to 9 m.
Length multiplied fixed length - up to 9 m with allowance 5 mm for each cutting. Per customer request it can be stated another allowance.
Max length deviation for fixed and multiple length are to be + 10 mm.
Production type of pipes | Max deviations | ||||||||||
Outside diameter | Wall thickness | ||||||||||
Sizes, mm | Deviations | Sizes, mm | Deviations | ||||||||
Cold drawn pipes | Up to 30 including | ± 0,10 mm | For pipes with OD 6 - 108 mm | ||||||||
Over 30 up to 40 including | ± 0,15 mm | Up to 0,8 including | ± 0,05 mm | ||||||||
Over 40 up to 50 including | ± 0,20 mm | Over 0,8 up to 5 including | ± 7,5 | ||||||||
Over 50 up to 60 including | ± 0,25 mm | Over 5 | ± 6% | ||||||||
Over 60 up to 70 including | ± 0,30 mm | For pipes with OD over 110 mm | |||||||||
Over 70 up to 80 including | ± 0,35 mm | Up to 2,5 including | ± 10% | ||||||||
Over 80 up to 90 including | ± 0,40 mm | Over 2,5 up to 5 including | + 10%, -7,5% | ||||||||
Over 90 up to 108 including | ± 0,45 mm | Over 5 | ± 7,5% | ||||||||
Over 108 up to 120 including | ± 0,50 mm | ||||||||||
Over 120 | ± 0,8 % | ||||||||||
Hot rolled pipes | Up to 50 including | ± 0,35 mm | Up to 15 including | ± 10% | |||||||
Over 50 | ± 0,8% | Over 15 | ± 8% | ||||||||
If D/S = 4 - 10 | ± 6% | ||||||||||
Mechanical composition | |||||||||||
Steel grade | Tensile strength, N/mm2 (min) | Yield strength, N/mm2 (min) | Elongation, % (min) | ||||||||
10 | 343 | 206 | 24 | ||||||||
20 | 412 | 245 | 21 | ||||||||
35 | 510 | 294 | 17 | ||||||||
45 | 589 | 323 | 14 | ||||||||
40Х | 618 | - | 14 | ||||||||
30ХГСА | 491 | - | 18 | ||||||||
Chemical composition (%, max) | |||||||||||
Steel grade | C | Si | Mn | Cr | Ni | Mo | S | P | Cu | ||
10 | 0,07-0,14 | 0,17-0,37 | 0,35-0,65 | 0,15 | 0,3 | - | - | - | - | ||
20 | 0,17-0,24 | 0,17-0,37 | 0,35-0,65 | 0,25 | 0,25 | - | 0,03 | 0,025 | 0,3 | ||
35 | 0,32-0,40 | 0,17-0,37 | 0,50-0,80 | 0,25 | 0,3 | - | 0,04 | 0,035 | 0,3 | ||
45 | 0,42-0,45 | 0,17-0,37 | 0,50-0,80 | 0,25 | - | - | - | - | - | ||
40Х | 0,36-0,44 | 0,17-0,37 | 0,50-0,80 | 0,80-1,10 | 0,3 | - | 0,035 | 0,035 | 0,3 | ||
30ХГСА | 0,28-0,34 | 0,90-1,20 | 0,80-1,10 | 0,80-1,10 | 0,3 | - | 0,005 | 0,025 | - | ||
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