How to distinguish the quality of small diameter moment tube

Date:2021-11-16 17:46:24 Tuesday

Summary:Recently, the price of small-diameter moment tube futures has fluctuated greatly, inventory and market transactions have increased, and liquidity of funds has been relatively high. The current development of the market gives the impression that the m......

Recently, the price of small-diameter moment tube futures has fluctuated greatly, inventory and market transactions have increased, and liquidity of funds has been relatively high. The current development of the market gives the impression that the market is moving in a positive direction. I think that in the period when the cost of small-diameter tube is rising, the reduction in inventory has played a very good role in the current inventory. Inventories will decrease, at least temporarily, and the small-diameter moment tube market may rise during this period.
　　 When everyone uses small-diameter moment tubes, this kind of problem often occurs, but it is usually caused by unqualified products, and of course it will also cause operational errors. It's not just these substandard items. At the time of installation. Please pay close attention. Otherwise, it is easy to damage, even inferior products will crack, and the risk of use is very high. The market will never be too big. Yixuan Metal teaches you a few simple ways to distinguish the quality of small diameter moment tubes

　　 The first step is to check the surface of the lower tube of the small diameter moment tube to see if there are dents. There are scratches on the surface, the raw material of the square tube is not very good, and the impurity content is relatively high. The cause of the scratches is the use of inferior materials from the manufacturer. If you have not ordered at this time, please do not use it and check with the quality inspection department.
　　 In addition to raw material problems, problems often occur during loading. The square tube is made of steel, but due to its large size, some materials are relatively brittle. Pay special attention to loading at this time. Corrosion-resistant small-diameter moment tubes will inevitably cause bumps during stacking or loading. The crane should be placed as much as possible at a time to reduce scratches. The small diameter moment tube is optimally packed during the loading process. Packaging and loading are carried out during the manufacturing process.
　　 You should be careful that most of the small-diameter moment tube quality problems are found. Therefore, when purchasing pipes, we will choose some good small-diameter rectangular pipe manufacturers to save you worry and ensure after-sales service.
The usual delivery length of 　　 square tube is 4000mm-12000mm, with 6000mm and 12000mm being the majority. Rectangular pipes are allowed to deliver short-length and non-fixed-length products not less than 2000mm, and can also be delivered in the form of interface pipes, but the buyer should cut off the interface pipe when using it. The weight of short-length and non-fixed-length products should not exceed 5% of the total delivery volume, and the square tube with a theoretical weight greater than 20kg/m should not exceed 10% of the total delivery volume. The curvature of the square tube should not exceed 2mm per meter. , The total curvature shall not be greater than 0.2% of the total length
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