TORICH INTERNATIONAL LIMITED
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability | 60000 Tons per year |
| Delivery Time | 35-45 days |
| Packaging Details | In bundles in wooden box |
| Product name | Longitudinal Electric Resistance Welded Hot Dip Galvanized Steel Tubes |
| Keyword | Longitudinal Electric Resistance Welded Hot Dip Galvanized Steel Tubes |
| Type | Welded ERW |
| Surface | Galvanized Coated |
| Material | Q195/Q235/Q345 |
| Usage | Construction Structure |
| Shape | Round Shape |
| Length | 4-12m |
| OD | 5-711mm |
| WT | 0.5-5.5mm |
| Brand Name | TORICH |
| Model Number | GB/T 13793 |
| Certification | ISO 9001 ISO 14001 TS 16949 EN 10204.3.1 LR KR |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram | Supply Ability | 60000 Tons per year |
| Delivery Time | 35-45 days | Packaging Details | In bundles in wooden box |
| Product name | Longitudinal Electric Resistance Welded Hot Dip Galvanized Steel Tubes | Keyword | Longitudinal Electric Resistance Welded Hot Dip Galvanized Steel Tubes |
| Type | Welded ERW | Surface | Galvanized Coated |
| Material | Q195/Q235/Q345 | Usage | Construction Structure |
| Shape | Round Shape | Length | 4-12m |
| OD | 5-711mm | WT | 0.5-5.5mm |
| Brand Name | TORICH | Model Number | GB/T 13793 |
| Certification | ISO 9001 ISO 14001 TS 16949 EN 10204.3.1 LR KR | Place of Origin | CHINA |
| High Light | welded steel pipe ，welding steel tubing | ||
GB/T 13793 Longitudinal Electric Resistance Welde Longitudinal Electric Resistance Welded Hot Dip Galvanized Steel Tubes
Application:Suitable for mechanical, construction and other structural purposes, and the straight seam welded steel pipe with an outer diameter of not more than 711mm, can also be applied to general welded steel pipe for fluid transportation
size:L--4~12m OD--5~711mm WT--0.5~5.5mm
Grade:10,20,Q195,Q215,Q213,Q275
Manufacture method:The steel pipe shall be made of hot rolled steel strip or cold rolled steel strip by high frequency resistance welding method
Delivery State:Steel tube should be welding or heat treatment state delivery
Surface Quality:The internal and external surfaces of the steel tube are not allowed to have cracks, scabs, folds, delaminations, laps, and burns. Allows for scribes, scratches, misalignment of welds, burns, oxide scales, and external burr removal traces that are not more than a negative wall thickness deviation
Tolerance of Outer Diameter Unit:mm
| Outer Diameter(D) | General Precesion(PD.A)a | Higher Precision(PD.B) | High Precision(PD.C) |
| 5-20 | ±0.30 | ±0.15 | ±0.05 |
| ﹥20-35 | ±0.40 | ±0.20 | ±0.10 |
| ＞35-50 | ±0.50 | ±0.25 | ±0.15 |
| ＞50-80 | ±1%D | ±0.35 | ±0.25 |
| ＞80-114.3 | ±0.60 | ±0.40 | |
| ＞114.3-168.3 | ±0.70 | ±0.50 | |
| ＞168.3-219.1 | ±0.80 | ±0.60 | |
| ＞219.1-711 | ±0.75%D | ±0.5%D | |
| a Not apply for steel pipe for roller of belt conveyor | |||
Tolerance of Wall Thickness Unit:mm
| Wall Thickness(t) | General Precesion(PD.A)a | Higher Precision(PD.B) | High Precision(PD.C) | Non-uniform Wall Thicknessb |
| 0.50-0.70 | ±0.10 | ±0.04 | ±0.03 | ≤7.5%t |
| ＞0.70-1.0 | ±0.05 | ±0.04 | ||
| ＞1.0-1.5 | ±0.06 | ±0.05 | ||
| ＞1.5-2.5 | ±10%t | ±0.12 | ±0.06 | |
| ＞2.5-3.5 | ±0.16 | ±0.10 | ||
| ＞3.5-4.5 | ±0.22 | ±0.18 | ||
| ＞4.5-5.5 | ±0.26 | ±0.21 | ||
| ＞5.5 | ±7.5%t | ±5.0%t | ||
| a Not apply for steel pipe for roller of belt conveyor b Not apply for General Precesion steel tube. Non-uniform Wall Thickness means the difference between maximum and minimum values of measured wall thickness on the same cross section. | ||||
Weight coefficient of galvanized steel pipe
| Wall thickness t/mm | 1.2 | 1.4 | 1.5 | 1.6 | 1.8 | 2.0 | 2.2 | 2.5 | 2.8 | 3.0 | 3.2 | 3.5 | |
| Coefficient c | A | 1.106 | 1.091 | 1.085 | 1.080 | 1.071 | 1.064 | 1.058 | 1.051 | 1.045 | 1.042 | 1.040 | 1.036 |
| Coefficient c | B | 1.085 | 1.073 | 1.068 | 1.064 | 1.057 | 1.051 | 1.046 | 1.041 | 1.036 | 1.034 | 1.032 | 1.029 |
| Coefficient c | C | 1.064 | 1.055 | 1.051 | 1.048 | 1.042 | 1.038 | 1.035 | 1.031 | 1.027 | 1.025 | 1.022 | 1.020 |
| Wall thickness t/mm | 3.8 | 4.0 | 4.2 | 4.5 | 4.8 | 5.0 | 5.4 | 5.6 | 6.0 | 6.5 | 7.0 | 8.0 | |
| Coefficient c | A | 1.034 | 1.032 | 1.030 | 1.028 | 1.027 | 1.025 | 1.024 | 1.023 | 1.021 | 1.020 | 1.018 | 1.016 |
| Coefficient c | B | 1.027 | 1.025 | 1.024 | 1.023 | 1.021 | 1.020 | 1.019 | 1.018 | 1.017 | 1.016 | 1.015 | 1.013 |
| Coefficient c | C | 1.020 | 1.019 | 1.018 | 1.017 | 1.016 | 1.015 | 1.014 | 1.014 | 1.013 | 1.012 | 1.011 | 1.010 |
| Wall thickness t/mm | 9.0 | 10.0 | 11.0 | 12.0 | 12.7 | 13.0 | 14.2 | 16.0 | 17.5 | 20.0 | |||
| Coefficient c | A | 1.014 | 1.013 | 1.012 | 1.011 | 1.010 | 1.010 | 1.009 | 1.008 | 1.007 | 1.006 | ||
| Coefficient c | B | 1.011 | 1.010 | 1.009 | 1.008 | 1.008 | 1.008 | 1.007 | 1.006 | 1.006 | 1.005 | ||
| Coefficient c | C | 1.008 | 1.008 | 1.007 | 1.006 | 1.006 | 1.006 | 1.005 | 1.005 | 1.004 | 1.004 |
| |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller
Year Established:
1997
Total Annual:
25000000-30000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Who We are ？ -------A professional steel pipes materials inventor, manufacturer and solution provider Torich International Limited is a professional manufacturer and exporter of steel pipes materials. It is an international marketing and sales company specialized in steel tubes, which hol... Who We are ？ -------A professional steel pipes materials inventor, manufacturer and solution provider Torich International Limited is a professional manufacturer and exporter of steel pipes materials. It is an international marketing and sales company specialized in steel tubes, which hol...
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