Industry News
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Method for preventing quenching cracks of medium and high carbon low alloy steel pipes
(A) If the entire steel pipe is cooled to the martensitic transformation stop temperature (Mf point) or lower by strong water quenching, quenching cracks will occur with high probability. (B) Since the cracks at the time of quenching cracking extend substantially in the axial ...Read more -
How to install galvanized steel pipes
First. According to the specific conditions of the diameter and pipeline, select the appropriate connection method 1. Welding: enter the installation at an appropriate time according to the progress of the site. Fix the bracket in advance, draw a sketch according to the actual...Read more -
Comparison of reagents for straight seam steel pipes
Straight seam steel pipe products are widely used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. They are 20 key products developed in my country. Straight seam steel pipes are u...Read more -
What should be done at the end of cooling large diameter steel pipes
(1) When the cooling is completed, that is, when the temperatures of the surface layer and the core are all consistent, the elastic deformation of the surface layer and the core will also disappear and return to the original state. Although instantaneous thermal stress is gene...Read more -
Fire steel pipe construction
(1) When the steel pipes of the fire hydrant water supply system adopt hot-dip galvanized steel pipes on the inner and outer walls, welding should not be used. When the system pipeline adopts a non-corrosive inner wall pipeline, it can be connected by welding, but the pipeline...Read more -
Steel structure maintenance and upkeep
1. Regular rust and anti-corrosion protection. Generally, the designed service life of steel structures is 50-70 years. During the use of steel structures, the chance of being damaged due to overload is very small. Most steel structure damage is caused by corrosion that reduce...Read more -
Why are large-diameter steel pipe mostly welded with steel
1. The uses of large-diameter stainless steel can be divided into oil well pipes (casing, oil pipes drill pipes, etc.), pipeline pipes, boiler pipes, mechanical structural pipes, hydraulic support pipes, gas cylinder pipes, geological pipes, and chemical pipes (high-pressure f...Read more -
What is the difference between butt welding flange and flat welding flange
The butt-welded flange is that the pipe diameter and the wall thickness of the interface end are the same as the pipe to be welded, and it is welded just like two pipes. The flat welding flange is a concave platform that is slightly larger than the outer diameter of the pipe a...Read more -
Comparison of steel pipe anticorrosive coating technology
Steel pipe anti-corrosion coating process 1: Due to the use of curtain coating, the coating film sags seriously. Besides, due to the unreasonable design of the roller table and chain, the coating film has two longitudinal and multiple circular scratches. This process is remove...Read more
