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Galvanized steel pipe classification
1. Hot-dip galvanized pipe. Let the molten metal react with the iron matrix to produce an alloy layer, allowing the matrix and coating to bond. Hot-dip galvanizing must first pickle the steel pipe to remove the iron oxide on the surface of the steel pipe. After pickling, it must be cleaned with a...Read more -
Main use and process characteristics of galvanized steel pipe
The main purpose of galvanized steel pipe Galvanized pipes are usually used to loosen gas and heating. Galvanized pipes are also used as water pipes. However, after a few years of use, a large amount of rust will be generated. The yellow water that flows out will not only contaminate sanitary war...Read more -
What are the classifications of stainless steel pipes
1. Stainless steel pipes are classified by material Divided into ordinary carbon steel pipes, high-quality carbon structural steel pipes, alloy structural pipes, alloy steel pipes, bearing steel pipes, stainless steel pipes, as well as bimetallic composite pipes, plating and coating pipes to save...Read more -
Key points of internal thread tapping of stainless steel pipe fittings
1 Tap design and manufacture a. Choose a better tap material. Adding special alloy elements to ordinary high-speed tool steel can significantly improve the wear resistance and toughness of the tap. b. Coating titanium nitride coating into the surface of the tap thread can significantly improve th...Read more -
How to seal threaded steel pipe fittings
Through the colorless tape (plaster tape) on the thread, this is more efficient. 1. First, apply lead oil evenly on the outer thread of the thread, then evenly wind the hemp wire in a clockwise direction, and then screw on the inner wire steel pipe fittings and connectors (this method is a method...Read more -
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
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