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Characteristics of stainless steel welded pipe and its processing technology

Stainless steel welded pipe is also called
pipe, most of which is a stainless steel tube which is made of stainless steel
tape after curling the equipment. Its production and processing technology is
simple and efficient, the specifications are varied and the investment is low,
but the strength of the product is generally lower than that of the seamless
steel pipe

With the continuous progress of production
technology of high-quality stainless steel strip rolling and rapid development
of welding technology, welding quality is more and more high, varieties and
specifications of welded steel pipe is also increasingly diverse, and in more
and more fields especially in the heat exchanger tube, decorative tube, etc. in
the low-pressure fluid pipe effectively replacing seamless steel prices more

There are two characteristics of stainless
steel welded pipe, one is the small diameter stainless steel welded pipe is
continuous online production, the thicker the wall is, the higher the
investment of the unit and the melting equipment, the lower its economic and
practical. The thinner the tube wall is, the lower the input output ratio will
be, and the technology of the product will also decide its characteristics. The
accuracy of the ordinary welded steel pipe is higher, the wall thickness is
even, the brightness inside the tube is also high, and it can be arbitrarily
fixed. So it shows its good economy and beauty in the field of high precision,
medium and low pressure fluid application.

The welding characteristics of this kind of
welded pipe can be divided into two kinds according to the welding process:
automatic welding and manual welding. Automatic welding is usually used by
submerged arc welding and plasma welding, and manual welding is usually used
for argon arc welding.

There are many ways to divide the stainless
steel welded pipe. According to the weld style, straight welded pipe and spiral
welded pipe can be divided into common welded pipe, heat exchanger tube,
condenser tube, galvanized welded pipe and so on.

And the weight calculation formula of
stainless steel welded pipe is (outer diameter – wall thickness) x wall
thickness x0.02491x length = weight (kg)

The strength of the spiral welded pipe in
the stainless steel welded pipe is usually higher than that in the longitudinal
welded pipe. Generally, the welded pipe with smaller diameter is welded by
straight seam, while the large diameter welded pipe is mostly welded by screw.
Add a little knowledge, because stainless steel welded pipe is mainly made of
stainless steel band, so in general cases, welded pipe is not comparable to
seamless steel pipe in people’s eyes.

Source: China Stainless Steel Welded Pipes
– Yaang Pipe Industry Co., Limited (www.yaang.com)

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