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Introduction of anti-corrosion of inner wall of large diameter steel pipe
1. Before processing all steel pipes, the steel plate on the inner wall of the large-diameter steel pipe should be trusted, and it is required to reach the metal luster (whitening). It should reach the sa2.5 standard required in the “Surface Rust Grade and Derusting Grade of Steel Before Pa...Read more -
Storage of seamless steel pipes
1) The storage site or warehouse of steel should be in a clean place with unobstructed drainage, far away from factories and mines that produce harmful gases or dust. Weeds and all debris should be removed on the field, and the steel should be kept clean; 2) Do not stack with acid, alkali, salt, ...Read more -
Internal anti-corrosion treatment method for large diameter spiral steel pipe
The construction of cement mortar fabric should usually be carried out after the spiral steel pipe has been laid, the pressure test has passed, and the covering soil has been compacted according to the planning requirements. Due to the small stiffness and thin wall of the steel pipe, the pipe mus...Read more -
Thin-walled stainless steel pipe construction and installation
1) Thin-walled stainless steel pipes and fittings should not be in direct contact with cement, cement mortar, and concrete. When the pipeline is concealed, anti-corrosion tape should be wrapped around the outer wall of the pipe or plastic-coated thin-walled stainless steel pipe should be used. 2)...Read more -
Why steel pipes need to be heat treated
The function of heat treatment is to improve the material mechanical properties of steel pipes and precision steel pipes, eliminate residual stress and improve the cutting performance of steel pipe metal. According to the different purposes of heat treatment, heat treatment processes can be divid...Read more -
Comparison of the advantages and disadvantages of spiral steel pipe and straight steel pipe welds
The weld seam of spiral steel pipe is longer than that of straight seam steel pipe. If the pipe length is L, the weld seam length is L/cos(θ). Most of the defects in steel pipes are concentrated in the welds and heat-affected zones. Long welds mean a high probability of defects. This is the main ...Read more -
Hot-rolled steel pipe details
The hot-rolled steel pipe adopts German technology manufacturing equipment and advanced eddy current flaw detection equipment; internal burr removal and cold diameter reduction process equipment imported from the United States to ensure that the inner wall is smooth and smooth without damage and ...Read more -
The principle of anti-corrosion steel pipes
Coating anticorrosion is a uniform and dense coating formed on the surface of de-rusting steel pipes, which can isolate it from various corrosive media. Steel pipe anti-corrosion coatings are increasingly using composite materials or composite structures. These materials and structures must have ...Read more -
What is the service life of carbon steel tube?
Carbon steel tubes are made of steel ingots or solid round steel through perforation into capillary tubes, and then made by hot rolling, cold rolling or cold drawing. Carbon steel tube plays an important role in my country’s steel pipe industry. Carbon steel tubes come according to your med...Read more -
Storage conditions of carbon steel tubes
A) Choose the appropriate site and warehouse for carbon steel tubes 1. The site or warehouse where the steel is stored should be located in a clean and well-drained place, away from factories and mines that produce harmful gases or dust. Weeds and all debris should be removed from the site, and t...Read more -
Matters needing attention when purchasing welded pipe machinery
With the development of the construction industry, the application of welded pipe machinery in construction projects is becoming more and more extensive. As an important industrial equipment, the procurement of welded pipe machinery is very important. However, when purchasing welded pipe machiner...Read more -
API casing hydrostatic pressure test
API oil casing is a steel pipe used to support the wall of oil and gas wells to ensure the normal operation of the entire oil well during the drilling process and after completion. The hydrostatic pressure test of casing pipe is an indispensable part of the production process of the steel pipe. I...Read more
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