News
-
Introduction to Common Methods of Steel Pipe Welding
At present, the commonly used methods for welding steel pipes are electrode arc welding (SMAW), submerged arc welding (SAW), gas tungsten arc welding (GTAW), gas melting arc welding (GMAW), flux cored arc welding (FCAW) and Downward welding and so on. (1) The advantages of ele...Read more -
How to solve the phenomenon of spiral steel pipe “goose head bend”
If the large-diameter spiral steel pipe is processed to a certain length, there must be bending, which is a phenomenon and situation that is often encountered in steel pipes. The large-diameter spiral steel pipe is commonly called “goose head bend” due to the uneve...Read more -
What are the heat treatment methods for spiral steel pipes
1. Thermomechanical treatment High-temperature thermomechanical treatment can improve the yield ratio and elastic limit of spiral steel pipe. Improve the comprehensive mechanical properties, fatigue properties, and stress relaxation properties of the spiral steel pipe. Reducin...Read more -
Welding treatment of thick-walled spiral steel pipe
Thick-walled spiral steel pipe is a method of arc welding under the flux layer, which is formed by using the heat generated by the arc burning between the flux and the welding wire under the flux layer, the base metal, and the molten wire flux. During use, the principal stress...Read more -
Surface treatment of thick-wall straight seam steel pipe
The uniformity of the pipe wall of the thick-walled straight seam steel pipe will directly affect the post-processing parts. The pipe wall of the thick-walled straight seam steel pipe cannot be controlled, and the overall steel pipe cannot be strictly controlled. Small and med...Read more -
Causes of rust and corrosion of spiral steel pipes
Because spiral steel pipes are stacked outdoors, and most of them are buried in the ground when they are in use, they are easy to corrode and rust. To ensure the smooth flow of the pipes, the spiral steel pipe manufacturers must have strong corrosion resistance. . Once the pip...Read more -
What are the classifications of the coating methods of large-diameter water-conveying plastic-coated steel pipes
The coating methods of large-diameter water-conveying plastic-coated steel pipe plastic-coating equipment are divided into two categories: simultaneous internal coating and external coating, and separate internal coating and external coating. Process coating methods are also d...Read more -
The difference and use of seamless steel pipe and spiral welded pipe
Seamless steel pipes are widely used. General-purpose seamless steel pipes are rolled from ordinary carbon structural steel, low-alloy structural steel, or alloy structural steel, with the largest output, and are mainly used as pipelines or structural parts for conveying fluid...Read more -
How to clean straight seam steel pipe
The straight seam steel pipe structure can be a round pipe structure or a rectangular pipe structure according to the specific conditions of the components, supply conditions, production and processing conditions, and cost, or a mixture of the two types of steel pipes. When us...Read more