2024-06-14 Various conventional methods for drawing steel pipes.(1) Drawing steel pipes without mandrels, used to reduce only the outer diameter of steel pipes.(2) Drawing steel pipes with fixed short mandrels, used to reduce steel pipes' outer diameter and wall thickness. This method has a fixed mandrel and u
Read More 
2024-06-13 Underground oil extraction tools work in wells thousands of meters deep, with harsh environments and complex stress conditions. Under normal circumstances, the extraction tools must not only withstand tensile stress, and torsional bending stress but also withstand strong friction and impact. At the
Read More 
2024-06-12 Decarburization is the phenomenon that which the carbon content on the surface of a steel pipe decreases during heat treatment. The essence of decarburization is that the carbon atoms in the steel pipe react with the furnace atmosphere such as hydrogen or oxygen at high temperatures to generate meth
Read More 
2024-06-11 The steel pipe oblique rolling piercing process is the most widely used in seamless steel pipe production. It was invented by the German Mannesmann brothers in 1883. Oblique rolling piercing machines include two-roll oblique rolling piercing machines and three-roll oblique rolling piercing machines.
Read More 
2024-06-07 15CrMoG high-pressure alloy steel pipe is a high-strength, high-temperature, high-pressure pipe with many advantages. This pipe is widely used in industries such as petroleum, chemical, electric power, and aviation.First of all, 15CrMoG high-pressure alloy steel pipe has high strength and hardness.
Read More 
2024-06-06 Galvanized steel pipe is a commonly used material in modern life, and welding is the most commonly used connection method. The quality of welding is directly related to the safety and stability of the product. So what problems should we pay attention to to ensure the quality of welded products?1. St
Read More 
2024-06-05 With the laying of various pipelines in the country, the use of pipelines has become more and more extensive. We have previously introduced that internal and external plastic-coated steel pipes have good anti-corrosion properties, but many friends feel that it is difficult to choose when purchasing
Read More 
2024-06-04 1. From the surface of the spiral steel pipe, see whether the production process of the spiral steel pipe is exquisite. Generally, it is necessary to study and analyze the spiral steel. The cross-section of the fake and inferior spiral steel pipe is elliptical. The reason is that the manufacturer sa
Read More 
