304 stainless steel welded pipe is stainless steel strip through the unit and mold roll forming after welding stainless steel pipe. Stainless steel seamless pipe is the use of round tube blank perforation, through cold rolling, cold drawing or hot extrusion production. 304 stainless steel welded pipe with the progress of production technology, the improvement of weld quality, the diversity of variety specifications has been in more and more places instead of stainless steel seamless pipe.
1. Simply speaking, the literal meaning of the two can be seen, the difference is that stainless steel seamless pipe without weld points.
2 stainless steel seamless pipe production accuracy is not high, uneven wall thickness, low brightness of the tube inside and outside the wall, and the high cost of customization. 304 stainless steel welded pipe just make up for these, uniform wall thickness high brightness, but also can support customer needs customized, save material costs.
3 Because there is no solder joint seamless pipe, corrosion resistance and high pressure resistance is stronger than welded pipe, it is therefore seamless pipe usually thick pipe wall, thin wall seamless pipe practicability low processing cost is relatively high. Welded pipe does not have this limitation, can be made thin wall pipe. With the improvement of welding technology, the performance is gradually approaching seamless pipe.
4 Welded pipe and seamless pipe production process difference also determines the price difference, seamless pipe is relatively complex production process caused by it is more expensive than the price of welded pipe. In consideration of procurement costs, welded pipe is also a preferred option.
5. Combined with the characteristics of seamless pipe, it is mainly used for high pressure, high strength, mechanical structure materials, such as power station, industrial engineering and large-scale equipment transmission pipeline. Welded pipe can be used as decorative pipe, product pipe, prop pipe or lower pressure pipeline.
The above is 304 stainless steel welded pipe and stainless steel seamless pipe several differences, we can choose according to the use, economic cost combined with the characteristics of the two reasonable.
