The classification of stainless steel: stainless steel seamless pipe and stainless steel welded pipe (seamed pipe) basic two categories. According to pipe diameter and shape can be divided into tube-shaped pipe, round pipe is widely used, but there are some square, rectangular, semi-circular, hexagon, equilateral triangle, octagon shaped steel tubing, etc.. 
 For steel to withstand the fluid pressure and hydraulic pressure test should be carried out to test its pressure-ray detection capability and quality, the provision does not leak under pressure, wet or expansion of qualified, some steel but also according to the standard requirements or demand side curling test, flaring test, flattening test, etc. 
 Seamless stainless steel pipe, also known as stainless steel seamless pipe, tube or solid steel ingot is made of wool by the perforated tube, and then by the hot-rolled, cold rolled or cold call is made. Specifications of seamless steel pipe with wall thickness mm diameter * in number. 
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