Industry News
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Classification and application range of welded steel pipe
Welded pipe, also known as welded steel pipe, is a steel pipe made of steel plate or strip steel after crimping and welding. Welded steel pipe has a simple production process, high production efficiency, many varieties and specifications, and less equipment investment, but its...Read more -
The processing method of large-diameter steel pipe and expression method of the pipe diameter
Expression of large diameter steel pipe diameter: 1. For water and gas transmission steel pipes (galvanized or non-galvanized), cast iron pipes, and other pipes, the pipe diameter should be expressed in nominal diameter DN; 2. For seamless steel pipe, welded steel pipe (straig...Read more -
The difference between galvanized steel pipe and plastic-coated steel pipe
1. Galvanized steel pipe to make the molten metal react with the iron matrix to produce an alloy layer so that the matrix and the coating are combined. Hot-dip galvanizing is to pickle the steel pipe first. To remove the iron oxide on the surface of the steel pipe, after pickl...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 -
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 -
Routine maintenance is required when using thick-walled steel pipes
Thick-walled steel pipes are widely used steel varieties. It directly affects the economic benefits and the lives of personnel. Every country in the world attaches great importance to the inspection of thick-walled steel pipes, and various non-destructive testing (NDT) methods...Read more -
Causes and Adjustment of the Uneven Wall Thickness of Steel Pipe
Causes and adjustment of the uneven wall thickness of steel pipes: 1. The causes of uneven wall thickness of the spiral shape are: the uneven wall thickness caused by the adjustment reasons such as the uneven rolling center line of the piercer, the inclination angle of the two...Read more -
The use of OCTG casing
The OCTG casing is a large-diameter pipe that acts to fix the wall or bore of oil and gas oil wells. The casing is inserted into the wellbore and fixed with cement to help the wellbore separate the rock formations and prevent the wellbore from collapsing while ensuring the cir...Read more -
The reasons for the leakage of hot-dip galvanizing of seamless steel pipes
The leakage of hot-dip galvanizing of seamless steel pipes causes and solutions: 1. The surface of the plated parts is not clean (1) The surface of the plated parts contains paint, grease, and soldering iron; it can be polished or scrubbed with relevant solvents. ⑵ iron oxide;...Read more