1cr5mo Alloy tube manufacturers teach you how to distinguish between good and bad 1cr5mo alloy tubes because the processing is not in place. And these burrs will easily scratch the surface of the pipe, so the first identification method comes out. There are many scratches on the surface of the poor quality 2 inferior 1cr5mo alloy pipe manufacturers will process the product in order to achieve a large negative tolerance. The reduction amount of the 1cr5mo alloy tube will be increased, which will lead to thin and low horizontal ribs of the finished product, so if you find that the 1cr5mo alloy tube has such a situation, do not buy it. 3. The cross section of the high-quality 1cr5mo alloy pipe is square, and the poor quality of the 1cr5mo alloy pipe will make the cross-section of the steel pipe appear oval. 4 Inferior 1cr5mo alloy pipes can basically not reach the standard size, so when purchasing, use a professional ruler to measure them to make a simple distinction. As long as the 1cr5mo alloy pipe has the above-mentioned situation, it means that it is an inferior pipe. Pick these out. What is the method of nondestructive testing of 1cr5mo alloy pipes? Nondestructive testing is a method of nondestructive testing of 1cr5mo alloy pipe materials, workpieces or parts, so what is the method of nondestructive testing of 1cr5mo alloy pipes? 1 Ultrasonic flaw detection” GB/T5777-1996GB/T5777 -2008 Piezoelectric ultrasonic mainly detects longitudinal defects and is used to measure diameter and thickness. Electromagnetic ultrasound can detect longitudinal and transverse defects. The main grades are C3L1C5L2C8L25C10L3C12L4. Among them, C5 is used for cold working of high pressure boiler tubes; C8 is used for hot working of high pressure boiler tubes; C10 and C12 are used for steel pipes for other purposes. 2 Eddy current testing (GB/T7735-2004 is mainly used for surface and near-surface flaw detection.
Penetrating eddy current testing mainly detects lateral defects and delaminations. Eddy currents can also be used to measure thickness, hardness, strength, diameter and distance. Acceptance classes A and B may be used as an alternative to water tightness testing. B-level acceptance is negotiated by both the supplier and the buyer, and is specified in the contract. The sample tube has drilled holes (through holes) and longitudinal grooves. 3 Magnetic flux leakage detection” GB/T12606-1999 is mainly used for the detection of surface and near-surface defects (such as cracks, folds, sandwiches, chutes, cold insulation, etc.). The acceptance level is l2l3l4 (5%, 10%, 12.5%, l2.5 of the nominal wall thickness of the outer surface grooved steel pipe is 8%. 4 Magnetic particle inspection) GB/T15822-1995 is mainly used for the detection of surface and near-surface cracks and other defects. There are three standard samples: Type A, Type B and Type C. Magnetic particle testing only detects longitudinal and transverse damage within 400mm of the pipe end. Common anti-corrosion process categories of 1cr5mo alloy pipe manufacturers Technical treatment to ensure the service life of 1cr5mo alloy pipe and the safety and environmental protection of pipeline engineering. The anti-corrosion performance of 1cr5mo alloy pipe will also affect the economy and maintenance cost of steel pipe. At present, the anti-corrosion technology of 1cr5mo alloy pipe has formed a set of very mature According to different uses and anti-corrosion processes, the pipeline anti-corrosion process mainly includes: 1cr5mo alloy pipe anti-corrosion epoxy coal tar pitch, this anti-corrosion method generally adopts epoxy coal tar pitch external anti-corrosion and ipn8710 internal anti-corrosion process, the process is simple and the cost is low .3PE anti-corrosion steel pipe and TPEP anti-corrosion steel pipe have a high degree of process automation, but the cost is generally higher than other anti-corrosion processes. 3PE anti-corrosion is three-layer polyethylene anti-corrosion, TPEP anti-corrosion is internal epoxy resin anti-corrosion, and outer three-layer polyethylene anti-corrosion. Plastic coating Layered steel pipes (epoxy resin coated steel pipes) are widely used in anti-corrosion technology. The application fields include water supply and drainage, fire sprinkler and mining. The pipeline anti-corrosion technology is mature, with strong anti-corrosion and mechanical properties, low maintenance costs and long service life. It is gradually recognized and promoted by more and more engineering design units.
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