Size and dimension
| Dimension: | 15×15 to 64×64 mm |
|---|---|
| Wall thickness: | 1 to 4 mm |
Material
| Steel grades by DIN: | St12, St34–2, St37–2, St44–2 |
|---|---|
| GOST: | VSt2kp, VSt3kp, VSt3sp, VSt4sp |
Surface finish
The tubes are supplied with oxidized, bright or hot dip galvanized surface finish. Hot dip galvanized tubes can be supplied in the following range:
| Length: | 7 m at maximum |
|---|---|
| Thickness of galvanized layer: | 400 g/mř |
| Square tubes: | outer size from 20 to 60 mm inc. wall thickness from 2 to 4 mm |
| Rectangular tubes: | outer size from 30×18 to 60×40 mm inc. wall thickness from 2 to 4 mm |
Surface defects and scratches smaller than the tolerance limit of the wall thickness are allowed. Even though the external collar of the weld is removed the seam may be still visible. The size of the inner collar depends on the wall thickness and meets standard.
Lengths and tolerances
| Manufactured length: | from 4 to 7 m |
|---|---|
| Approximate length: | from 4 to 7 m with a tolerance limit of ±500 mm |
| Precise length: | from 4 to 7 m with a tolerance limit of + 100 mm |
Tolerance limits of outer dimensions of section, radius, wall thickness and precision are according to appropriate dimensional standards.
Packing and designation
Tubes are supplied in band-blocked bundles in a weight up to 3500 kg. The blocked tubes can also be stacked into square or rectangular piles and wrapped in jute or foil. Each bundle is fitted with the producer's label containing the data as follows:
- size
- steel grade
- heat number
- order number
- final inspection
- customer
- weight in kg, by agreement length in m and number of pieces
Upon request, the surface of the tubes is protected against atmospheric corrosion with a preserving agent.
Profile
| B mm | R mm | t mm | Weight kg/m | Tube no | B mm | R mm | t mm | Weight kg/m | Tube no |
|---|---|---|---|---|---|---|---|---|---|
| 15 | R | 1.0 | 0.44 | 3500310 | 37.5 | R | 3.25 | 3.50 | 3531932 |
| 15 | R | 1.5 | 0.64 | 3500315 | 40 | R | 1.5 | 1.79 | 3500915 |
| 19 | R | 1.2 | 0.67 | 3532312 | 40 | R | 1.8 | 2.16 | 3500918 |
| 19 | R | 1.5 | 0.82 | 3532315 | 40 | R | 2.0 | 2.39 | 3500920 |
| 19.05 | R | 1.6 | 0.88 | 3532316 | 40 | R | 2.5 | 2.94 | 3500925 |
| 20 | R | 1.2 | 0.71 | 3500412 | 40 | R | 2.7 | 3.16 | 3500927 |
| 20 | R | 1.5 | 0.87 | 3500415 | 40 | R | 3.0 | 3.49 | 3500930 |
| 20 | R | 1.8 | 1.03 | 3500418 | 40 | R | 3.5 | 3.86 | 3500935 |
| 20 | R | 2.0 | 1.13 | 3500420 | 40 | R | 4.0 | 4.52 | 3500940 |
| 20 | R | 2.5 | 1.33 | 3500425 | 45 | R | 1.5 | 2.02 | 3501015 |
| 25 | R | 1.2 | 0.90 | 3500612 | 45 | R | 2.0 | 2.70 | 3501020 |
| 25 | R | 1.5 | 1.11 | 3500615 | 45 | R | 2.5 | 3.33 | 3501025 |
| 25 | R | 1.6 | 1.18 | 3500616 | 45 | R | 3.0 | 3.96 | 3501030 |
| 25 | R | 1.8 | 1.31 | 3500618 | 50 | R | 1.5 | 2.28 | 3501115 |
| 25 | R | 2.0 | 1.44 | 3500620 | 50 | R | 1.8 | 2.72 | 3501118 |
| 25 | R | 2.5 | 1.77 | 3500625 | 50 | R | 2.0 | 3.01 | 3501120 |
| 25 | R | 3.0 | 2.07 | 3500630 | 50 | R | 2.5 | 3.73 | 3501125 |
| 25.4 | R | 1.6 | 1.20 | 3532416 | 50 | R | 2.7 | 4.01 | 3501127 |
| 30 | R | 1.5 | 1.34 | 3500715 | 50 | R | 3.0 | 4.43 | 3501130 |
| 30 | R | 1.8 | 1.59 | 3500718 | 50 | R | 3.5 | 5.14 | 3501135 |
| 30 | R | 2.0 | 1.76 | 3500720 | 50 | R | 3.6 | 5.25 | 3501136 |
| 30 | R | 2.5 | 2.16 | 3500725 | 50 | R | 4.0 | 5.56 | 3501140 |
| 30 | R | 2.7 | 2.36 | 3500727 | 60 | R | 2.0 | 3.64 | 3501320 |
| 30 | R | 3.0 | 2.54 | 3500730 | 60 | R | 2.5 | 4.43 | 3501325 |
| 30 | R | 3.5 | 2.74 | 3500735 | 60 | R | 2.7 | 4.86 | 3501327 |
| 32 | R | 1.5 | 1.44 | 3530215 | 60 | R | 3.0 | 5.37 | 3501330 |
| 32 | R | 1.6 | 1.52 | 3530216 | 60 | R | 3.5 | 6.04 | 3501335 |
| 32 | R | 2.0 | 1.83 | 3530220 | 60 | R | 3.6 | 6.38 | 3501336 |
| 32 | R | 2.5 | 2.23 | 3530225 | 60 | R | 4.0 | 6.71 | 3501340 |
| 32 | R | 3.0 | 2.73 | 3530230 | 64 | R | 2.0 | 3.89 | 3531720 |
| 32 | R | 3.5 | 3.13 | 3530235 | 64 | R | 2.5 | 4.83 | 3531725 |
| 34 | R | 1.5 | 1.53 | 3532015 | 64 | R | 3.0 | 5.75 | 3531730 |
| 34 | R | 2.0 | 2.01 | 3532020 | 64 | R | 3.5 | 6.65 | 3531735 |
| 34 | R | 2.5 | 2.47 | 3532025 | 64 | R | 4.0 | 7.54 | 3531740 |
| 34 | R | 3.0 | 2.92 | 3532030 | |||||
| 34 | R | 3.5 | 3.35 | 3532035 | |||||
| 35 | R | 1.5 | 1.58 | 3500815 | 40 | 8 | 3.0 | 3.22 | 3431030 |
| 35 | R | 2.0 | 2.07 | 3500820 | 50 | 10 | 3.0 | 4.08 | 3431130 |
| 35 | R | 2.5 | 2.55 | 3500825 | 60 | 13 | 3.5 | 5.65 | 3431235 |
| 35 | R | 3.0 | 3.01 | 3500830 | 64 | 9.5 | 3.5 | 6.29 | 3430905 |
| 35 | R | 3.5 | 3.46 | 3500835 |
Unless otherwise specified, then the corner radius is R = 1.5 t.