Changsha Xiangjia Metal Materical Co., Ltd.

In the realm of industrial manufacturing and piping solutions, choosing the right type of pipe is crucial for ensuring efficiency and durability. Two common types of welded pipes are   high-frequency welded pipes   and   ordinary welded pipes . While both serve the same primary applications, they differ significantly in their welding processes, strength, cost, and application fields. This article delves into the key differences between these two types of pipes, with a special focus on ERW steel pipes. Welding Process The most prominent difference between high-frequency welded pipes and ordinary welded pipes lies in their welding techniques.  High-Frequency Welded Pipes: The welding process for high-frequency welded pipes utilizes high-frequency induction heating. This involves the application of high-frequency electric currents that generate heat through skin and proximity effects. The edges of the pipe billets are heated and melted before being fused together under ...

Both   hot-dip galvanizing and cold-galvanizing   are zinc processing techniques. Hot-dip galvanizing requires melting zinc, while cold-galvanizing adopts an electrolytic method. They are very different during production, but they are similar in the performance of the finished product. So how to distinguish hot-dip galvanizing and cold-galvanizing? What are the differences between them in which aspects? Let’s understand together! The differences between hot-dip galvanizing and cold-galvanizing can be distinguished from several aspects. First, the differences between hot-dip galvanizing and cold-galvanizing. Different thicknesses. The zinc layer of hot-dip galvanizing is relatively thick itself, generally with a thickness of more than 10 um, so it has good anti-corrosion ability. Although the surface is bright, it is slightly rough and zinc flowers may appear. While the zinc layer of electro-galvanizing is very thin, only about 3-5 um in thickness. Although the surface is smoot...

Welded steel pipe , also known as welded pipe, is a steel pipe made by welding after the steel plate or strip is curled and formed. Generally, the fixed length is 6 meters. The production process of welded steel pipe is simple, the production efficiency is high, there are many varieties and specifications, and the equipment investment is small, but the general strength is lower than that of seamless steel pipe. Commonly used materials: Q235A, Q235C, Q235B, 16Mn, No. 20, Q345, L245, L290, X42, X46, X60, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, etc. Implementation standards: GB/T3091-2008, Welded steel pipe for low-pressure fluid transportation: mainly used for transporting water, gas, air, oil and heating hot water or steam and other generally lower pressure fluids and other purpose pipes. Its representative material is: Q235A grade steel. GB/T14291-2006, Welded steel pipe for fluid transportation in mines: mainly used for straight seam welded steel pipes for mine compresse...

Square and rectangular tubes   are a kind of name for square-shaped pipes and rectangular-shaped pipes, that is, steel pipes with equal side lengths. They are made by rolling strip steel through technological processing. Generally, the strip steel is unpacked, flattened, curled, and welded to form a round pipe, and then the round pipe is rolled into a square pipe and then cut to the required length. The following content is mainly about the corresponding uses sorted out by Xiangjia Steel for everyone, hoping they are helped. Mine-used fluid-transporting welded square and rectangular tubes, with the standard number of GB/T14291-2000. The representative materials are Q235A and B-grade steel, mainly used for straight seam welded square and rectangular tubes for mine ventilation, drainage, and axial gas drainage; Galvanized welded square tubes for low-pressure fluid transportation, with the standard number of GB/T3091-2008. The representative materials are Q235A, Q235B, Q345B, etc. Ma...

Galvanizing   is a process of zinc coating, with hot-dip galvanizing involving melting zinc and electro-galvanizing using an electrolytic method. While their manufacturing processes differ significantly, the final products may appear similar. So, how can we distinguish between hot-dip galvanizing and electro-galvanizing? Let's delve into it. Firstly, Distinction in Processes: Hot-dip galvanizing involves multiple processing steps, including oil removal, acid pickling, immersion in a flux bath, drying, and finally immersion in a molten zinc bath for a specific duration. On the other hand, electro-galvanizing, also known as zinc electroplating, utilizes an electrolytic process. After oil removal and acid pickling, the workpiece is immersed in a solution containing zinc salts. By connecting to the electrolytic equipment, zinc deposits onto the workpiece via directed movement of current between positive and negative poles. Secondly, Differentiation in Appearance: Hot-dip galvanized coa...