Features of seamless pipe
The thicker the wall thickness of a product, the more economical and practical it is. The thinner the wall thickness, the higher its processing cost. Secondly, the technology of the product determines its limited performance. Low: uneven wall thickness, low brightness on the inside and outside of the tube, high scale cost, and pits and black spots on the inside and outside are not easy to remove. Third, its detection and shaping must be processed offline. Therefore, it shows its superiority in terms of high pressure, high strength, and mechanical structural materials.
Seamless appearance quality
No cracks, folds, cracks, cracks, creases, delaminations, and scarring defects on the inner and outer surfaces of the seamless pipe should be completely removed (except for mechanical processing pipes). After removal, the wall thickness and external Diameter exceeds negative deviation. Other minor surface defects not exceeding the allowable negative deviation may not be removed.
Straight allows depth
Hot-rolled, hot-extruded pipe, diameter less than or equal to 140mm, no more than 5% of the nominal wall thickness, and the maximum depth is not more than 0.5mm; cold-drawn (rolled) pipe is not more than 4% of the nominal wall thickness, and the maximum depth is not more than 0.3 mm.
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Post time: Mar-25-2020