Welcome to Shandong Haohai Iron and Steel Co., Ltd
WhatsApp : +86 18615692579 E-mail : info@zghaohaisteel.com
Square pipe is a kind of hollow square section of light thin-wall steel pipe, also known as steel cooling bent profile. It is Q235 hot rolled or cold rolled strip steel or coil as the base material after cold bending processing and then high frequency welding made of square section shape size of the section steel. In addition to the thickening of the wall, the corner size and the flatness of the edge of the hot rolled extra-thick wall square pipe reach or even exceed the level of the resistance welding cold-formed square pipe.
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What are the uses of seamless steel pipe
Seamless steel pipe has hollow section, widely used for conveying fluid pipeline, such as conveying oil, natural gas, gas, water and some solid materials, etc. Compared with solid steel such as round steel, steel pipe is a kind of economic section steel because of its light weight and the same bending and torsional strength.
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Corrosion resistance of welded steel tubes
In the production of T-welded steel pipe, the wrong edge often occurs, and there are many influencing factors. In production practice, steel pipe is often degraded by the wrong edge. Therefore, it is necessary to analyze the causes of spiral steel pipe misalignment and its preventive measures.
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The production process of seamless steel pipe
① Main production process of hot rolled seamless steel pipe (△ main inspection process) : Preparation and inspection of tube blank △ heating of tube blank → perforation → Rolling pipe → reheating of steel pipe → fixing (reducing) diameter → heat treatment △ straightening of finished pipe → finishing → inspection △ (non-destructive, physical and chemical, table inspection) → storage
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CONTACT US
Email ：info@zghaohaisteel.com
Phone : +86-18615692579
WhatsApp : +86-18615692579
Tel : +86-18615692579
Address : 357 Gongye South Road, Lixia District, Jinan City, Shandong Province
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