Thick-walled stainless steel seamless pipe is usually used in coal, mechanical processing and other industrial fields. This seamless steel pipe mainly cold drawing and hot rolling two kinds. There are five categories, namely, hot-rolled thick-walled seamless steel tubes, cold-drawn thick-walled seamless steel tubes, cold-rolled thick-walled seamless steel tubes and extruded thick-walled seamless steel tubes and pipe jacking. In the actual trading environment, thick-walled seamless steel pipe of varying quality, there are many fake and shoddy, this article is to introduce how to identify these fake and shoddy thick-walled seamless steel pipe.stainless steel sheet and coil supplier

Fake thick-walled seamless steel pipe prone to folding: the so-called folding refers to the thick-walled seamless steel tube stainless steel plate surface has a variety of polyline, this defect is usually vertical throughout the stainless steel tube. Folding is due to the pursuit of high production efficiency manufacturers, a large amount of pressure, resulting in ears, in the next rolling is easy to form a fold, folded stainless steel pipe will be cracking after bending, which will greatly reduce the thick-walled Strength of seam steel pipes.Top quality 200 series stainless steel bar

Fake and shoddy thick-walled seamless steel pipe surface often linen: Ma surface is due to rolling groove wear serious lead to the formation of thick-walled seamless steel pipe surface irregular irregularities. This is because the excessive pursuit of profits thick-walled seamless steel pipe manufacturers, rolling rolling over the standard does not change.2B finish stainless steel circle 430

Fake and shoddy thick-walled seamless steel pipe surface is easy to form scars: for two reasons, on the one hand is poor quality of thick-walled seamless steel pipe material is uneven, containing more impurities; followed by the manufacturer's poorly guided equipment, Easy to stick steel, making the impurities after the roll is easy to scar the surface of the stainless steel tube.25mm aluminum tube With Free Sample