CANGZHOU WILSON PIPELINE CO.,LTD

Metal of 304 stainless steel seamless pipe and oxygen in the atmosphere to react, the appearance will form an oxide film. However, the...

The surface of the 304 stainless steel pipe is due to the production process. The surface will bring some defects such as: crack,...

The so-called difference between stainless steel seamless pipe and carbon steel seamless pipe, stainless steel and carbon steel mainly...

Production process of large diameter thick-walled square tube are as follows: The first step: Raw materials that strip, wire, flux. In...

There are some steps about how to bend the square tube bending machine not o be wrinkled: 1. Clamp (clamping) part of the tube must be...

Stainless steel square tube connection is varied, the commonly used types of the pipe fitting viega profi-press, compression type,...

Forming method of circular tube is called bending, and the forming method of the rectangular tube is called buckling. There are two basic...

With the progress of the times, more and more cars are being manufactured. The production materials of automobiles are made of square...

Method of checking the hardness of the square tube is as follows: ① Scratch hardness. Mainly used to compare the degree of hardness of...

After any workpiece is machined, there will remain prestressed on the surface. The residual compressive stress on the rectangular tube...

Residual stresses caused by uneven cooling of seamless square tubes. Residual stress is the internal self-equilibrium stress in the...

In general 304 stainless steel tube mills polishing wheel speed of 2500m / min, the polishing considerations also used in polishing,...

When it is necessary to produce several profiled tubes and the size of the strip used allows unification (eg several types of flat steel...

Square tube quality must control the brightness after annealing. More influential factors are as follows: 1, The annealing temperature...

As the use of square tube deep underground, in this environment is very easy to be corroded, so much attention to the quality of the...

1. Stainless steel tube with vertical external power supply, DC positive polarity (wire connected negative). 2. Generally suitable for...

Butt weld elbow is formed by hot forming or forging forming elbow, and its connection is the form of butt welded directly to the pipe....

Welded neck flange generally use forging or forging process is made. Elected with steel or steel production, it is necessary to meet the...

① Flange pressure contact surface should be gold processing, in order to prevent welding deformation, flange contact surface depth should...

Stainless steel flange material is usually pided into 304, 304L, 316, 321, 316L and other categories. 1, In order to prevent corrosion...