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Seamless rectangular tube usage is very high. However, the general construction side before the construction of the pipe, pipe, rubber ring and so do a visual inspection, found to have problems to give up. 1. Clean seamless pipe mouth: the mouth of all the debris removed scrub clean. 2. Clean the apron, the apron: the adhesive ring on the adhesive wipe clean, the apron bent "plum-shaped" or 8-shaped socket into the slot, and press the rubber ring along the entire hand...

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Fake rectangular tube prone to collapse. Fold is the rectangular tube surface formed a variety of broken lines, this defect is often run through the entire product. Folding is due to shoddy manufacturers in pursuit of high efficiency, the amount of pressure is too large, produce handle, a rolling produce folding, folding products after bending cracks, the strength of steel big drop. Inferior rectangular tube appearance often pitted phenomenon. Ma is due to a defect of g...

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In the city water supply, drainage, heating, gas pipelines and long-distance oil pipelines are mostly buried in the underground, and the factory in the process of the pipeline for the ease of operation and maintenance of more than laying on the ground. Pipeline traffic, supporting, slope and discharge exhaust, compensation, heating, heat preservation and antisepsis and cleaning, painting and other identification and safety, both for the ground or underground laying are im...

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Fake rectangular tube prone to collapse. Fold is the rectangular tube surface formed a variety of broken lines, this defect is often run through the entire product. Folding is due to shoddy manufacturers to pursue high efficiency, pressure amount slants big, produce Erzi, a rolling produced folding, folding products after bending will crack and the strength of steel big decline....

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Large diameter welded steel pipe is generally used GB/T3091-2001 and GB/T9711.1-1997 standards. Straight pipes made of Q235A, Q235B, 16Mn, 20#, Q345, L245, L290, X42, X46, X70, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb. Large diameter welded steel pipe is mainly used for conveying water, gas, air, oil and heating hot water or steam, such as generally low pressure fluid and other use pipe. Large diameter welded steel pipe surface allows the existence doe...

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