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Details about the DN800 steel pipe inspection specification
Steel pipes are important materials commonly used in construction, engineering, and manufacturing industries, and for large-diameter steel pipes, such as DN800 steel pipes, their quality and safety are even more important. Therefore, strict inspection specifications are essential to ensure the qu...Read more -
Spiral steel pipes can be divided into several categories according to their uses
Spiral steel pipes can be roughly classified into four categories according to their uses: spiral steel pipes for drainage, spiral steel pipes for dredging, spiral steel pipes for piling, and spiral steel pipes for oil and gas. Spiral steel pipes for drainage Material of spiral steel pipes for dr...Read more -
What are the heat treatment characteristics of martensitic stainless steel pipes
Answer: Martensitic stainless steel pipes include Cr13 type (low carbon and medium carbon), Cr17Ni type (low carbon), and Cr18 type (high carbon). The heat treatment process includes annealing, quenching + tempering, stress relief, etc. (1) Cr13 stainless steel pipe: Alloys with Cr ≥ 12% have the...Read more -
Explore the advantages and applications of 299X10 steel pipe
299X10 steel pipe, have you heard of this name? Perhaps it is not very familiar in daily life, but it plays an important role in the field of engineering construction. As a common steel pipe material, 299X10 steel pipe has unique advantages and is widely used in various fields. Let us take a clos...Read more -
What are the precautions for welding steel pipes
Welding steel pipe is a common process that plays an important role in the construction, manufacturing, and repair fields. However, when performing welding operations, we need to pay attention to some key things to ensure welding quality and safety. First of all, the preparation before welding th...Read more -
Introduction to the method of measuring the inner diameter and aperture of precision steel pipes
For the measurement of the diameter of the inner hole of steel pipes, precision steel pipes, and some mechanical parts, there are measurement methods such as direct measurement, indirect measurement, and comprehensive measurement. First, direct measurement: the most commonly used measurement meth...Read more -
Explore the method of measuring the bending of steel pipes
Seamless steel pipes, straight seam welded steel pipes, forged steel pipes, precision steel pipes, high-precision precision steel pipes, and other steel pipes will cause different degrees of curves in the longitudinal direction (i.e. length direction) of the steel pipe body during the production ...Read more -
How to choose a large diameter 42crmo thick wall seamless steel pipe
42CrMo thick-walled seamless steel pipe is a commonly used steel pipe material, widely used in petroleum, chemical, electric power, aviation, aerospace, and other industries. When choosing 42CrMo thick-walled seamless steel pipe, you need to consider the following key factors. First, consider the...Read more -
Not all post-weld heat treatments for steel pipes are beneficial
Welding residual stress is caused by the uneven temperature distribution of the weldment caused by welding, the thermal expansion and contraction of the weld metal, etc., so residual stress will inevitably occur with the welding construction. The most common method to eliminate residual stress is...Read more -
The main reasons for choosing spiral steel pipe are as follows
1. Quality assurance: The production of spiral steel pipes strictly adheres to national standards, ensuring reliable quality. At the same time, strict quality control is implemented in every link of its production process, further improving the quality and reliability of the pipeline. 2. Superior...Read more -
Detailed explanation of usage matters and flow characteristics in the installation guide for large-diameter plastic-coated steel pipes for water supply
First, the flow characteristics of large-diameter plastic-coated steel pipes for water supply: 1. When fluid passes through a plastic-coated steel pipe, the fluid flows faster in the pipe because the inner wall of the pipe is smooth and the friction resistance is small. 2. The cross-sectional are...Read more -
Examples, characteristics, and causes of steel pipe defects and defects
Surface indentation characteristics: The outer surface of the steel pipe is a spiral-shaped indentation. cause: 1) The angle of the straightening machine roller is improperly adjusted and the reduction amount is too large. 2) The straightening roller is seriously worn, etc. Cause: The roller stic...Read more
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