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Electric-welded straight-seam steel pipe
Square Section
GOST 13663-83
GOST 8639-82
GOST 30245-2012
Measured lengths up to 10 m
Oil coating for corrosion protection
Dimensions in mm
External Width x Height
10x10
15x15
20x20
30x30
40x40
50x50
60x60
80x80
100x100
120x120
150x150
200x200
If desired
Reduced bending radius
Steel grades
Coating
st2
st3sp
st3ps
08ps
08kp
08U
10ps
st20
E420
DX51
DX52
DX53
If desired
Coating Ze(Zinc), Alusinc(AS)
Thicknesses
Pipe walls
1.2mm
1.5mm
1.7mm
2.0mm
2.2mm
2.5mm
3.0mm
3.5mm
4.0mm
Assortment
Mechanical properties
Марки стали | Предел прочности, мин MPa | Предел текучести, мин MPa | Относительное удлинение, % |
|---|---|---|---|
St08ps | 333 | 206 | 24 |
St3sp, St3ps, St3kp | 353 | 216 | 22 |
20, 20ps, 20kp | 412 | 245 | 21 |
10, 10ps, | 333 | 206 | 24 |
St4sp, St4ps,
St4kp | 412 | 245 | 21 |
St2sp, St2ps,
St2kp | 333 | 206 | 24 |
1) For other steel grades - upon individual request.
2) Steel grades according to GOST 380-2005, GOST 1050-2013
Dimensional tolerances
Характеристика | Значение отклонений |
|---|---|
External dimension(W) 10 mm ≤ W < 30 mm 30 mm ≤ W < 50 mm 50 mm ≤ W < 120 mm | ±0.25 mm ±0.25 mm ±0.8% |
Thickness(T) 1.0 mm ≤ T < 1.6 mm 1.6 mm ≤ T < 2.1 mm 2.1 mm ≤ T < 5.0 mm | ±9 % ±8 % ±4 % |
Concavity or convexity of the sides 10 mm ≤ W < 50 mm 50 mm ≤ W < 120 mm | 0.5 mm 0.8 mm |
Twisting | Up to 2° per 1 m |
1) For a maximum distance of 100 mm, the ends may have dimensions outside the tolerance limits due to residual stresses.
2) Tolerances meet and exceed the requirements of the high precision class of GOST 8639-82.
Coatings and Surfaces
Обозначение Покрытия | Описание | Подходит для |
|---|---|---|
HR (hot rolled) | Hot rolled products | Painting, welding works |
CR (cold rolled) | Cold rolled products | Precision products, stamping, chrome plating |
+Ze(zinc coating) | Galvanized rolled products for corrosion resistance | Increased resistance to rust |
+As (aluminum and silicon coating) | Rolled products with Al-Si coating | High temperature conditions |
1) The surface is lightly oiled to protect against corrosion during transport and short-term storage. Upon request, pipes can be delivered dry; however, in this case, INVEST ZONE will not be responsible for any possible rust.
Шероховатость поверхности, Ra | Значение Ra |
|---|---|
HR, cold rolled | < 0.6 μm |
HR, hot-rolled | < 2.0 μm |
Packaging and labeling
Наружный размер, мм | Шт в Упаковке | Размеры упаковки в мм (W x H x L) |
|---|---|---|
20 x 20 | 300 | 400 x 300 x 8000 |
30 x 30 | 154 | 420 x 330 x 10000 |
40 x 40 | 120 | 480 x 400 x 10000 |
50 x 50 | 80 | 500 x 400 x 10000 |
60 x 60 | 64 | 480 x 480 x 10000 |
80 x 80 | 36 | 480 x 480 x 10000 |
100 x 100 | 25 | 500 x 500 x 10000 |
1) All square pipes from INVEST ZONE are packed in a rectangular shape and secured with steel strapping bands.
2) Each pack is clearly marked with the production date, pipe type, steel grade and exact dimensions, ensuring fast loading and traceability.
3) Upon request, pipes can be supplied in other packaging sizes.
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Information for the client
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