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Causes of pits on the surface of seamless steel pipes and treatment methods
Continuous pits on the surface of seamless steel pipe cause: 1. Heavy wear on the rolls and grooves 2. The roll is not cooled well, and the surface is sticky steel 3.The surface of the conveying roller table is not smooth 4.The high temperature heating time of the abandoned tube in the heating is...Read more -
Production steps of spiral steel pipe
How to produce a variety of spiral steel pipes from a piece of steel? Today I will introduce to you, the steps in the production of spiral steel pipes are briefly introduced. (1) Various inspections of raw materials. Raw materials generally refer to strip coils, welding wires, fluxes, etc. Before...Read more -
Why doesn’t stainless steel composite pipe rust？
The stainless steel composite pipe used in our lives is relatively common, and its role in our lives is becoming more and more important. It combines the advantages of strong hardness of iron pipes, not easy to bend, strong impact resistance, strong wear resistance and corrosion resistance of sta...Read more -
How does the weld burr of the anti-corrosion spiral steel pipe form and eliminate
How does the weld burr of the anti-corrosion spiral steel pipe form and eliminate The technology of removing internal burrs is difficult. Because the special device for removing internal burrs is inside the steel pipe, the working environment is very poor, invisible and inaccessible. It is affect...Read more -
Why is galvanized steel pipe corrosion resistant?
Galvanized steel pipe is made by reacting zinc in a molten metal state with an iron substrate to generate an alloy layer, thereby combining the substrate and the plating layer. In the use of galvanizing technology, hot-dip galvanizing of galvanized steel pipe is to pickle the steel pipe first. In...Read more -
Where are alloy steel tubes suitable?
Alloy pipe is a kind of seamless steel pipe. Alloy pipe is divided into structural seamless pipe and high-pressure heat-resistant alloy pipe. The main difference is the production specifications of the alloy pipe and its industry. Annealing and tempering of the alloy pipe changes its mechanical f...Read more -
Three kinds of hardness indicators are commonly used to measure the hardness of seamless steel pipes
Generally, three kinds of hardness indicators, Brinell, Rockwell and Vickers, are used to measure the hardness of seamless steel pipes. 1.Brinell hardness tester In the seamless steel pipe standard, Brinell hardness is the most widely used, and the hardness of the material is often expressed by t...Read more -
The cleaning methods for straight seam welded pipe in welded pipe factory
Nowadays, our application of welded pipes is very extensive, but rust will inevitably occur in the process of using straight seam welded pipes. Rusted straight seam welded pipes will affect its normal operation, so it is found that If it is rusty, it needs to be cleaned in time. Then let’s ...Read more -
Seamless steel pipe
Seamless steel pipe is a long steel with a hollow section and no seams around it. The steel pipe has a hollow cross section and is widely used as a pipeline for transporting fluids, such as a pipeline for transporting oil, natural gas, gas, water, and certain solid materials. Compared with solid ...Read more -
Semless steel pipe price list Dec.2019
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Internal Coating Pipe
Internal Coating Pipe Using epoxy powder coating is for 30 years of history in a foreign country due to the wide range of sources of raw materials, production methods are simple, cheap, good performance, which do not pollute the environment and long service life, so far it is a good anti-corrosio...Read more -
How to Detect the Quality of Spiral Steel Pipe
Spiral steel pipe in the factory should do before the mechanical performance test and flattening test and flaring test, and to meet the requirements of the standard requirements. Spiral steel pipe quality testing methods are as follows: 1, From the surface to judge, that is, in the appearance of ...Read more