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[China]
Trade Verify
Address: No.809, Xinglong Building, First East Liaohe Road, Liaocheng Economic Development Zone,Shandong Province, China
Contact name:Anne
SHANDONG TONGMAO SPECIAL STEEL CO., LTD |
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Verified Suppliers
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Hot Dipped Galvanized Steel Carbon Weld/Seamless Galvanized Steel Pipe Tube for Building Material
Product Name | Galvanized Steel Pipe/Tube |
Thickness | 0.1mm-300mm or as required |
Standard | AISI,ASTM,DIN,JIS,GB,JIS,SUS,EN,etc. |
Technique | Cold rolled |
Surface Treatment | Clean, blasting and painting according to customer requirement |
Thickness tolerance | ±0.15mm |
Material | Q345,Q345A,Q345B,Q345C,Q345D,Q345E,Q235B HC340LA,HC380LA,HC420LA B340LA,B410LA 15CRMO,12Cr1MoV,20CR,40CR,65MN A709GR50 |
Coatings | Top Coats :5 micron primer + 20 micron colour Back Coat: 5 micron
primer - 7 micron primer |
MOQ | 1tons.We also can accept sample order. |
Shipment time | Within 15-20 workdays after receiving deposit or L/C |
Export packing | Waterproof paper, and steel strip packed. Standard Export Seaworthy Package.Suit for all kinds of transport,or as required |
| Processing Way | Cylinder Barrel ID (mm) | Max Length (mtr) | Straightness (mm/mtr) | ID Tolerance | Wall Thickness Tolerance (mm) | ID Roughness (μm) |
| Cold Drawn | 40-320 | 12 | 0.2-0.5 | H8-H10 | ±5% | 0.8-1.6 |
| Cold Rolled | 12-100 | 12 | 0.2-0.5 | H8-H10 | ±5% | 0.8-1.2 |
| Cold Drawn+Honed | 40-500 | 8 | 0.2-0.3 | H7-H9 | ±5% | 0.2-0.8 |
| Cold Drawn-SRB | 40-400 | 7 | 0.2-0.3 | H8-H9 | ± 5% | 0.2-0.4 |
| Deepth Drilling-Honed | 320-1100 | 8 | 0.2-0.3 | H7-H9 | ±8% | 0.2-0.8 |
| Deepth Drilling-SRB | 320-600 | 7 | 0.2-0.3 | H8-H9 | ±8% | 0.2-0.4 |
Product Application:
1. Fence, greenhouse, door pipe,greenhouse
2. Low pressure liquid, water, gas, oil, line pipe
3. For both indoor and outdoor the building construction
4. Widely used in scaffolding construction which is much cheaper
and convenient.
Overview of galvanized and hot-dip galvanized pipes
Galvanized steel pipe, commonly known as cold galvanized pipe, is galvanized only on the surface of the steel pipe, and the inner cavity of the steel pipe is not galvanized.
Hot-dip galvanized steel pipes are generally made of hot-dip galvanized processing technology, and the inner and surface of the steel pipes are covered with zinc layers.
The difference between galvanized pipe and hot-dip galvanized pipe:
1. The processing technology is different, one is organic chemical
solution, the other is physical solution; the hot-dip galvanized
galvanized layer is firm and not easy to fall off.
2. The hot-dip galvanized coating is thick, so the anti-corrosion ability is strong. The galvanized (electroplating process) coating is well-proportioned and the process performance is good. The thickness of the coating is generally between 1 μm and more than ten μm.
3. Hot-dip galvanizing is an organic chemical solution, which belongs to electrochemical corrosion. Galvanizing is a physical solution. Just brush a layer of zinc on the surface, and there is no galvanized inside at all, so the zinc layer is easy to fall off. Hot-dip galvanizing is used in the construction of construction projects.
4. The hot-dip galvanized steel pipe is made by reflecting the molten metal material and the iron base material to form an aluminum alloy layer, and then the base material and the coating layer are closely combined.
