Maintenance method of large diameter straight seam steel pipe

There is a significant difference between straight seam steel pipe and steel pipe. I believe many people think that the two are similar, the way of use and the performance they have, etc. Straight seam steel pipes are higher than steel pipes. The best types sold in the market are electric welded steel pipes. , electric welding thin-walled pipes, etc. The production process of straight seam welded pipes is very simple and the cost is low, so they are deeply loved by manufacturers. The diameter of straight seam steel pipes is also larger than other materials of the same type, and the thickness is also outstanding. Advantages, users can customize or produce according to their own needs.

In the process of manufacturing straight seam steel pipes, straight seam steel pipe manufacturers need to have very good control over the extrusion force. This is because, during the welding process, when the temperature of the edges of the two tube blanks reaches the welding temperature, they must be The applied pressure can make their metal grains penetrate each other, resulting in tightly bonded crystals to achieve the purpose of firm welding, but if there is insufficient extrusion, the crystals cannot be formed well, and the strength of the welding position will be very strong. Now, it is easy to cause cracking problems due to the action of external force during use. However, when the extrusion is too large, the welding metal that has reached the welding temperature will be squeezed out of the welding position, and the real welding can achieve The temperature of the metal will be very small, so the number of crystals will also be reduced, which will also cause the welding to be not strong enough, and there will also be large burrs, which is a serious defect.

Maintenance method of large diameter straight seam steel pipe
1. Choose a suitable venue and warehouse
(1) The site or warehouse where the steel pipe is stored should be selected in a clean and well-drained place, away from factories and mines that generate harmful gases or dust. Keep weeds and debris on the site and keep the steel pipe clean.
(2) It shall not be stacked together with materials that are corrosive to steel pipes such as acid, alkali, salt, cement, etc. in the warehouse. Different varieties of steel pipes should be stacked separately to prevent confusion and contact corrosion.
(3) Large sections, rails, steel plates, large-diameter steel pipes, forgings, etc. can be stacked in the open air.
(4) Small and medium-sized sections, wire rods, steel bars, medium-diameter steel pipes, steel wires, and wire ropes, etc., can be stored in a ventilated material shed, but the upper and lower pads are placed.
(5) Some small steel pipes, thin steel plates, steel strips, silicon steel sheets, small-diameter or thin-walled steel pipes, various cold-rolled and cold-drawn steel pipes, and metal products with high prices and easy corrosion can be stored in storage.
(6) The warehouse should be selected according to geographical conditions. Generally, an ordinary closed warehouse is used, that is, a warehouse with a roof, walls, tight doors and windows, and a ventilation device.
(7) The warehouse is required to pay attention to ventilation on sunny days, close it to prevent moisture on rainy days, and always maintain a suitable storage environment.

2. Reasonable stacking, put first
(1) The principle of stacking is to stack according to the variety and specifications under the condition of stable and secure stacking. Different varieties of materials should be stacked separately to prevent confusion and mutual corrosion.
(2) It is forbidden to store items that are corrosive to steel pipes near the stacking position.
(3) The bottom of the stack should be raised, firm and flat to prevent the material from being damp or deformed.
(4) The same materials are stacked according to the order of storage, which is convenient to implement the principle of first delivery.
(5) For the profiled steel stacked in the open air, there are wooden mats or strips below, and the stacking surface is slightly inclined to facilitate drainage, and pay attention to placing the materials straight to prevent bending and deformation.
(6) The stacking height should not exceed 1.2m for manual work, 1.5m for mechanical work, and 2.5m for stack width.