Zhuo Xigong 316L stainless steel seamless pipe polished stainless steel pipe sanitary precision pipe

Introduction to stainless steel pipe
There are many kinds of stainless steel pipes, but the main uses are as follows:
1、 Classification of stainless steel pipes
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Classification by production method:
(1) Seamless pipe & mdash& mdash; Cold drawn pipe, extruded pipe, cold rolled pipe

(2) Welded pipe:
(a) Classification by process & mdash& mdash; Gas shielded welding pipe, arc welding pipe and resistance welding pipe (high frequency and low frequency)

(b) By weld & mdash& mdash; Straight seam welded pipe, spiral welded pipe

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Classification by section shape: (1) circular steel pipe; (2) Rectangular tube

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Classification by wall thickness & mdash& mdash; Thin wall steel pipe, thick wall steel pipe
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Classification by use: (1) civil pipes are divided into round pipes, rectangular pipes and flower pipes, which are generally used in decoration, architecture, structure and so on;
(2) Industrial pipe: steel pipe for industrial piping, steel pipe for general piping (drinking water pipe), mechanical structure / fluid transmission pipe, boiler heat exchange pipe, food hygiene pipe, etc
It is generally used in various fields of industry, such as petrochemical, papermaking, nuclear energy, food, beverage, medicine and other industries, which have high requirements for fluid medium

2、 Seamless steel pipe
Stainless steel seamless pipe is a long strip of steel with hollow section and no joints around it

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Manufacturing process and flow of seamless steel pipe:
Smelting & gt; Ingot & gt; Steel rolling & gt; Sawing & gt; Peel & gt; Perforation & gt; Annealing & gt; Pickling & gt; Grey & gt; Cold drawing & gt; Cutting head & gt; Pickling & gt; Warehousing
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Characteristics of seamless steel pipe:
From the above process flow, it is not difficult to see: first, the thicker the wall thickness of the product, the more economical and practical it will be
The thinner the wall thickness, the higher its processing cost will be; Secondly, the process of the product determines its limitations
Generally, the accuracy of seamless steel pipe is low: uneven wall thickness, low brightness on the inner and outer surface of the pipe, high sizing cost, and there are pockmarks and black spots on the inner and outer surface, which are not easy to remove; Third, its detection and * must be processed offline
Therefore, it embodies its advantages in high pressure, high strength and mechanical structure materials

3、 Welded steel pipe
Welded steel pipe, abbreviated as welded pipe, is a stainless steel pipe made of steel plate or steel strip after crimping and forming by the unit and die

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Steel plate & gt; Striping & gt; Molding & gt; Fusion & gt; Induction bright heat treatment & gt; Internal and external weld bead treatment & gt*& gt; Sizing & gt; Eddy current testing & gt; Laser caliper & gt; Pickling & gt; Warehousing
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Characteristics of welded steel pipe:
From the above process flow, it is not difficult to see: first, the product is produced continuously on-line
The thicker the wall thickness, the greater the investment in the unit and fusion equipment, and the less economical and practical it is
The thinner the wall thickness is, the lower its input-output ratio will be; Secondly, the process of the product determines its advantages and disadvantages
Generally, the precision of welded steel pipe is high, the wall thickness is uniform, the internal and external surface brightness of stainless steel pipe fittings is high (the surface brightness of steel pipe determined by the surface grade of steel plate), and the length can be determined arbitrarily
Therefore, it embodies its economy and aesthetics in the application of high-precision, medium and low-pressure fluids