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ASTM A53 Iron Steel
The pipe obtained by straight seam welding on welding equipment is called straight seam welded pipe. (Because the welding of the steel pipe became a straight line, it was named.) Which according to the use of different, but also different after the production process, (substantially can be divided into scaffolding, fluid tubes, wire casing, stents, guardrails, etc.). Straight seam welded pipe standard GB/T3091-2008 and low pressure fluid welded pipe is a type of longitudinal welded pipe, generally used for water, gas transportation, after the completion of welding more than a common welded pipe to a hydraulic test, the current low pressure fluid pipe than ordinary Straight seam welded pipe prices are a bit higher (about 80 yuan in accordance with the current market price). For example: Welded steel pipe fluid pipe 1 inch (DN25) (that is Φ33.5 * 3.25) price is about 4300 per ton, and Ordinary straight seam welded pipe is about 4250.
How to test ASTM A53 Iron Steel
Q235B straight seam welded pipe quality inspection methods are many, of which physical methods are the most commonly used inspection methods, physical testing is the use of some physical phenomena to determine or test methods. Inspection of internal defects in materials or Q235B straight seam welded pipes is generally performed using non-destructive testing. The current non-destructive flaw detection includes magnetic flaw detection, ultrasonic flaw detection, ray detection, and penetrant flaw detection.
Magnetic inspection
Magnetic flaw detection can only detect defects on the surface and near surface of the magnetic Q235B straight seam welded pipe, and only quantitative analysis can be performed on the defect. The nature and depth of the flaw can only be estimated based on experience. The magnetic force test uses magnetic fields to magnetize the magnetic flux generated by the ferromagnetic Q235B straight seam welded pipe to detect defects. According to the measurement of magnetic flux leakage method, it can be divided into magnetic powder method, magnetic induction method and magnetic recording method, of which the magnetic powder method is the most widely used.
Penetration inspection
Penetration testing is the use of certain liquid permeability and other physical properties to find and display defects, including two kinds of color inspection and fluorescence detection, can be used to check the surface of ferromagnetic and non-ferrous materials, defects.
Ray inspection
Radiographic inspection is a flaw detection method that uses ray-penetrating substances and attenuating properties in the material to detect defects. According to the different types of radiation used for flaw detection, it can be divided into three types: X-ray inspection, γ-ray inspection, and high-energy ray inspection. Due to the different methods of displaying defects, each type of radiographic inspection is divided into ionization, screen observation, photography, and industrial television. The ray inspection is mainly used to inspect the internal cracks, incomplete penetration, porosity, and slag inclusions of the Q235B straight seam welded pipe.
Ultrasonic inspection
Ultrasonic waves can be used for the inspection of internal defects due to reflections at the interfaces of different media in the propagation of metals and other homogeneous media. Ultrasonic waves can inspect any weldment material, defects in any part, and can find the defect location sensitively, but it is difficult to determine the nature, shape and size of the defect. Therefore, Q235B straight seam welded pipe ultrasonic flaw detection often used in conjunction with ray inspection.
How to buy ASTM A 53 Iron Steel
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