2024-01-16 Hot-rolled steel is produced using mainly billets as raw material. The billets are heated in a roughing mill and finishing mill group made of steel. The steel strip coils are then produced by laminar cooling the steel to the set temperature and rolling it through the hot strip mill. The steel is the
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2024-01-16 The high-frequency welding process of straight seam steel pipes is completed in high-frequency welded pipe units. High-frequency welded pipe units usually consist of roll forming, high-frequency welding, extrusion, cooling, sizing, flying saw cutting, and other components. The front end of the unit
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2024-01-15 A detailed explanation of the welding process of large-diameter straight seam steel pipes: Double-wire automatic welding of straight seam steel pipes is a welding technology developed in recent years. In addition to the characteristics of semi-automatic single-wire welding, it also has welding chara
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2024-01-12 Straight seam steel pipe is a steel pipe in which the weld seam is parallel to the longitudinal direction of the steel pipe. Usually divided into metric electric welded steel pipes, electric welded thin-walled pipes, transformer cooling oil pipes, etc. The production process of straight seam welded
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2024-01-11 Most people think that "stainless steel does not rust. If it rusts, it is no longer stainless steel. There may be something wrong with the steel." This is a one-sided wrong view due to a lack of understanding of stainless steel.Stainless steel can also rust under certain conditions. Stainless steel
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2024-01-10 1. The main feature of ordinary seamless steel pipes is that they have no welding seams and can withstand greater pressure. Products can be very rough as cast or cold-drawn parts.2. Cold-drawn precision steel pipes are products that have appeared in recent years. They mainly have strict tolerances a
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2024-01-09 Spiral steel pipes are mainly used in water supply projects, the petrochemical industry, the chemical industry, the electric power industry, agricultural irrigation, and urban construction. They are among the twenty key products developed. For liquid transportation: water supply and drainage. For ga
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2024-01-08 In terms of processing technology: hot rolling is hot processing, and cold drawing is cold processing. Hot rolling is rolling above the recrystallization temperature, and cold rolling is rolling below the recrystallization temperature;Distinguish from appearance: cold-rolled seamless steel pipes hav
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