INSPECTION-Linyi Jinzhengyang Pipe Industry Co., Ltd

Water pressure test detection

High pressure water phosphorus removal is an important process in steel rolling. Its working principle is to use the rapid cooling of water to create a temperature difference between the oxidized steel skin and the billet, causing the surface oxide skin to crack and fall off mechanically. 2. Use the impact force generated by high-pressure water to remove the oxide steel scale on the surface of the billet. Avoiding the oxidation skin carried on the outer surface from embedding into the outer surface of the steel pipe to form a slight pitting during rolling, while improving the smoothness of the outer surface, reducing secondary oxidation, improving the quality of the outer surface of the steel pipe, reducing costs for subsequent precision processing, and improving overall quality, providing an important condition.

Magnetic flux leakage testing

The model HY-EMT-P180 can detect internal and external surface defects of seamless steel pipes with a diameter of 60-180. The flaw detector has multiple channels in both horizontal and vertical directions, with high detection sensitivity, safety and reliability, and convenient operation. It can meet the testing requirements of domestic standards such as GB/T5310-2017, GB/T9948-2013, GB/T6479-2013, GB/T18248-2021, GB/T3087-2022, GB/T8163-2018, as well as foreign standards such as API 5L and API 5CT.

Eddy current and ultrasonic testing

The quality non-destructive testing equipment for the precision cold drawing production line is a combined eddy current and ultrasonic testing machine. This equipment has the advantages of high detection accuracy, fast measurement speed, low false alarm rate, and few blind spots. The electrical control of the equipment adopts a fully automatic mode, and the production process data analysis, collection, and defect alarm are automatically completed. It can accurately detect surface and internal defects such as penetration, folding, inclusions, and scratches inside and outside the pipe, Provided effective protection for qualified products leaving the factory.

Titration experiment

The titration experiment determines the concentration of pickling solvent and the concentration of plating solution, which is a process of regulating two important parameters in the galvanizing production line. The correct control of these parameters is crucial for ensuring the quality of galvanizing and improving production efficiency.

salt spray test

Salt spray test is a commonly used corrosion testing method to evaluate the corrosion resistance of metal materials in salt spray environments. This test is mainly used to determine the corrosion resistance of metal products such as galvanized steel pipes.

Direct reading spectrometer

This equipment mainly detects the content of various elements in steel, including carbon, silicon, manganese, sulfur, phosphorus, chromium, nickel, copper, aluminum, vanadium, titanium, niobium, tungsten, tin, boron, zirconium, and 16 other elements. It can detect carbon steel and medium low alloy steel. Mainly testing seamless pipes for pipe blanks and finished products.

Metallographic microscope

This equipment mainly inspects finished steel pipes, and the inspection items include four items: microstructure, grain size, decarburization layer, non-metallic inclusions, etc.

Impact test detection

This equipment is mainly used to test the impact performance of finished steel pipes, and is also equipped with a low-temperature tank, which can be used to test samples between 20 ℃ and -50 ℃. The range of this device is 2, one is 0-150J, and the other is 0-300J

Rockwell hardness testing

This equipment mainly measures the Rockwell hardness of samples, including HRB and HRC.

Impact specimen notch projector

This equipment is an auxiliary equipment for impact testing, mainly used to detect whether the notch processing of impact specimens is qualified.

Microcomputer-controlled electro-hydraulic servo universal testing machine

The maximum force of this equipment is 600KN, mainly used to test the mechanical and process properties of finished steel pipes. The process test includes flattening test, expansion test, and bending test. Mechanical tests include tensile strength, yield strength, and elongation.