Gi square pipe hollow section
Another popular type of structural steel tube, that act like a middle-man between RHS and CHS, is the Square Hollow Section. In terms of an attribute, look and design.SHS has a flat surface which is also economical for joining and welding and requires minimal edge preparation.
1. Uniformity It provides regularity in size, shape, and tolerances, making it a popular choice for original equipment manufacturer (OEM) applications.
2. Strength Square tubings have high tensile strength and are therefore extremely resistant to extreme temperatures and pressures.
3. Low cost Compared to other types of mechanical pipes, square pipes require less process. Therefore, it can reduce the cost of low budget items.
4. Resistance It is fire resistant and does not twist, split or shrink.
5. Create Metal Structure You can easily bend, punch or drill a square tubing to bind it to itself or any other material. These characteristics of square pipes make it very easy to build metal structures.
Galvanized square pipe from the production process is divided into hot dip galvanized square pipe and cold galvanized square pipe.
Hot dip galvanized square pipe
It is a square tube made of steel plate or steel belt after crimping forming and welding. On the basis of this square tube, the square tube is placed in the hot dip galvanizing pool after a series of chemical reactions. The production process of hot-dip galvanized square pipe is relatively simple, and the production efficiency is very high, and the varieties and specifications are also many. This square pipe requires little equipment and capital, which is suitable for the production of small galvanized square pipe manufacturers. But from the strength of the steel tube strength is far lower than seamless square tube.
Cold galvanized square pipe
The cold galvanized square pipe is used in the square pipe on the principle of cold galvanized to make the square pipe has corrosion resistance. Different from hot dip galvanized cold galvanized coating is mainly anticorrosive through the principle of electrochemistry, so it is necessary to ensure sufficient contact between zinc powder and steel, resulting in electrode potential difference, so the steel surface treatment is very important.
Galvanized square pipe has hot dip galvanized square pipe and electric galvanized square pipe two categories. Hot dip galvanized square pipe wet, dry, lead - zinc, REDOX, etc. The main difference between different hot-dip galvanizing methods is how to activate the surface of steel pipe to improve galvanizing quality after acid leaching cleaning. At present, dry method and REDOX method are mainly used in production, and their characteristics are shown in the table. The surface of zinc layer is very smooth and compact, and the structure is uniform. Good mechanical properties and corrosion resistance; Zinc consumption is 60% ~ 75% lower than hot dip galvanizing. Electrogalvanizing has certain complexity in technology, but it is necessary to use this method for single-sided coating, double-sided coating with different thickness of inner and outer surface coating, and galvanized thin-walled pipe.
Product Name | galvanized steel pipe |
Specifications | Square pipe: 20*20mm~500*500mm |
Thickness | 0.8~3mm |
Standard | ASTM, BS, JIS, ASTM A513-2007, BS EN10219, JIS G34 |
Steel material | 16Mn, Q195-Q345, 16Mn, Q195, Q215, Q235, Q345, SS400, ST32, ST52, ASTM A500, ASTM A36 and so on. |
Zinc-coating | Pre-galvanized steel tube: 30g/m2-80g/m2 |
Technique | ERW welded, hot dipped galvanized, pre-galvanized |
Application | Construction / building materials steel pipe |
Package | 1) Big OD: in bulk |
Shandong Kuaima Steel Co., Ltd. has advanced special smelting, investment casting, pipe making and other production equipment. The company has 15 advanced production lines, which can independently produce alloy steel pipe, hot/cold rolled steel, galvanized steel, galvanized steel, prepainted steel and stainless steel coils, strips, plates, plates, pipes, bars and other products. The standing inventory is more than 450,000 tons to meet the customer's demand for delivery time.
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We have professional testing equipment. We have our own testing center laboratory to guarantee the quality of our products.
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