CPVC Pipe Production Line/HDPE Pipe Production Lines/PVC Pipes Extrusion Line/PPR Pipe Production Line

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Product Name: Pipe Production Line

The mill is used to manufacture of round pipe of Φ12mm-Φ63mm with thickness of 0.6mm-2.5mm from cold-rolled and hot-rolled coil strip by means of unclosed tubular blank with its subsequent welding into tube, edge heating by means of solid state high-frequency welder, longitudinal seam welding in rolls of tube welding machine, cooling, further sizing or shaping and on-stream cutting of endless tube in measured lengths.
Finished product will be of round, square or rectangular pipe.

1. Pipe diameter: Φ12mm-Φ63mm
Pipe Thickness: 0.6- 2.5mm
2. Square Pipe: 15X15mm - 50X50mm
Rectangle Pipe: 15X10mm - 40X60mm
Pipe Thickness: 0.6 - 2.0mm
3. Pipe Length: 4-12m
4. Length Tolerance: 0-6mm
5 Line speed: 30-120m/min

The Quality Inspection Methods for Q235B material pipe.

There are many kinds of quality inspection methods for Q235B longitudinal welded pipe, among which physical method is also the most commonly used inspection method. Physical inspection is the method of measuring or inspecting by using some physical phenomena. Nondestructive testing is generally used to inspect the internal defects of materials or Q235B straight welded pipe. The current non-destructive testing includes magnetic testing, ultrasonic testing, radiographic testing, penetrant testing, etc.

Magnetic test

Magnetic flaw detection can only find the surface and near surface defects of magnetic Q235B longitudinal welded pipe, and the defects can only be quantitatively analyzed, and the nature and depth of defects can only be estimated according to experience. Magnetic testing is to find defects by magnetic flux leakage produced by magnetizing ferromagnetic Q235B straight welded pipe with magnetic field. According to the different methods of magnetic flux leakage measurement, it can be divided into magnetic powder method, magnetic induction method and magnetic recording method.

Penetrant testing

Penetrant testing is to find and display defects by using the physical properties of some liquids, such as permeability. It includes two kinds of dye testing and fluorescent testing. It can be used to check the surface defects of ferromagnetic and non ferromagnetic materials.

Radiographic inspection

X-ray inspection is a kind of inspection method to find defects by using the characteristics of ray penetrating and attenuation in the material. According to the different rays used in flaw detection, it can be divided into X-ray flaw detection, gamma ray flaw detection and high energy ray flaw detection. Because of the different methods of showing defects, each kind of radiographic inspection is divided into ionization method, fluorescent screen observation method, photography method and industrial television method. Radiographic inspection is mainly used to inspect the internal cracks, lack of penetration, porosity, slag inclusion and other defects of Q235B straight welded pipe.

ultrasonic examination

When ultrasonic wave propagates in metal and other homogeneous media, it can be used to inspect internal defects because of its reflection on the interface of different media. Ultrasonic can detect the defects of any material and any part of the weldment, and can detect the defect location more sensitively, but it is difficult to determine the nature, shape and size of the defect. Therefore, the ultrasonic flaw detection of Q235B straight welded pipe is often combined with the radiographic inspection.

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