What are the ways to perforate square tube blanks?1. Push rolling piercingPush rolling piercing can be regarded as an improved form of pressure punching, that is, the fixed round die during pressure punching is changed to a pair of rolls with a circular pass. When the roll rotates to bite the rectan
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As a pillar-like existence in the greenhouse, the square tube can be said to be indispensable. Compared with round tubes and oval tubes, square tubes are easier to cut and weld, and can easily handle most hoop accessories.In actual use, the common dimensions of galvanized steel pipe for greenhouse a
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1 Control of weld gapIn the high frequency welding process, the strip steel is sent to the welded pipe unit, rolled by multiple rollers, and the strip steel is gradually rolled up to form a circular tube blank with an opening gap. and make the ends of the welding joint flush. If the gap is too large
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Global Rectangular Hollow Section Steel Market 2022, Global Scenario is a comprehensive and in-depth research of the global Rectangular Hollow Section Steel industry, with a focus on the Chinese market. The research provides key data on the market state of Rectangular Hollow Section Steel manufactur
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