Straight seam steel pipe is a kind of steel pipe welding process opposite to spiral steel pipe. The welding process of this kind of steel pipe is relatively simple, and the welding cost is relatively low, it can achieve high efficiency during production, so it is relatively common in the market. And it is a widely used product, so what advantages does it have?
This kind of steel pipe is welded by a welding method parallel to the longitudinal direction of the steel pipe, and it is also widely used. For the same diameter and length, the welding length of the straight seam steel pipe is much less, while the welding length of the spiral steel pipe may increase by more than 30%. Due to the process, the efficiency is relatively low and the output is also quite low during welding. However, for the same billet, generally spiral welded pipes can obtain products of various diameters. In contrast, straight seam steel pipes cannot achieve this welding effect.
The reason why straight seam steel pipes are widely used in the market is because of their characteristics. Since the process cost used in welding is relatively low, and it can be manufactured using the manufacturing processes of forged steel, extrusion, rolling, and drawing steel, and the specifications are also determined, it provides the possibility for wide application.
In my country, the petrochemical industry, water engineering industry, urban construction, power engineering, etc., all have demand for straight seam steel pipes. In 1947, the first modern steel pipe structure offshore platform was built in Mexico, which opened the prelude to the application of steel pipe structure. At Bushlane Palace in London, the exposed circular tube section truss transfers the facade load to the column, and the hot injection of water in the tube section is used for fire prevention, which just makes up for the weakness of poor fire resistance of steel structure buildings. There are many examples of straight seam steel pipes in nature. People are inspired by the structural performance of the circular tube shape under compression, torsion, and bending in multiple directions, and the traditional design concept of steel structure. The circular tube structure and the building exterior steel tube structure are not only limited to large-space and large-span buildings, gymnasiums, subway stations, and large industrial plants, but also obviously the traditional reinforced concrete structures, wooden structures, and brick structures are difficult to make appear.
After more than ten years of development, the completion of the Olympic venues represented by the Bird’s Nest has established a landmark building for the 2008 Olympic Games. The project uses low-alloy high-strength steel Q460. It is not recommended to use it at 345 or above. Another one is the lobby of the Grand Theater. The columns are made of refractory submerged arc-welded steel pipes, which can not deform or soften at temperatures above 600 degrees Celsius. Without any corrosion measures outdoors, it can be free from corrosion for a long time. In addition, my country has successively built some large steel tube structure buildings. As a new type of structure, the steel tube structure has made great achievements after more than ten years of development.
The market for straight seam electric welded steel pipes has been in a weak and stable or even falling state, and the downturn is difficult to change. It is understood that although it is now in the traditional peak season for steel consumption, it is difficult for downstream and terminal demand to be significantly released, and the consumption capacity for straight seam electric welded steel pipes is weak, resulting in a lack of favorable support factors for prices. With the recent arrival of new resources in the market, the phenomenon of uneven specifications in some areas has been slightly alleviated. Merchants with relatively sufficient supply are still mainly shipping, while merchants with low inventory mostly choose to wait and see for the time being. Fortunately, the current liquidity tension in the straight seam electric welded steel pipe market is not high, and it cannot form a large suppression on the price trend. For the straight seam electric welded steel pipe market, how prices develop will eventually return to the actual demand level. Considering that the recent market transactions are still tepid, I am afraid that there is still a downward risk in prices, but the magnitude will not be large.
Post time: Dec-27-2024