Maximum deviations of the sizes (GOST R 56729-2015)

Maximum linear deviations of the sizes
Product Length Width Insulation thickness, mm *
Declared Maximum deviation
Tubes, profiles - 1,5%
+ 2,5%
- dD ≤ 6
6 < dD ≤ 10
10 < dD ≤ 15
15 < dD ≤ 30
dD > 30
± 1,0
± 1,5
± 2,0
± 2,5
± 4,0
Cheets ± 1,5% ± 1,0% dD ≤ 5
5 < dD ≤ 10
10 < dD ≤ 15
± 1,0
± 1,5
± 2,0
Rolls ± 1,5% ± 1,0% 15 < dD ≤ 30
dD > 30
± 2,5
± 3,5
Tapes ± 1,5% ± 2,0% - ± 0,5

* Maximum deviations for profiles define only for those sections of a product, which are intended for decrease in value of a thermal stream.

 

Maximum deviations of inner Ø
Product Inner Ø
  Di,D ≤ 35 35 < Di,D ≤100 Di,D > 100
Tubes From +1 to +4 From +2 to +6 From +3 to +8