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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 -
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 -
High pressure seamless pipe hydrostatic testing and eddy current testing
First, high pressure seamless pipe quality problems Boilers with high pressure seamless pipe is an important material for manufacturing boiler pipe, the quality of how it will be directly related to the the boiler manufacture of quality so that the quality of the installation and use of quality. ...Read more -
High frequency welded (hfw) pipe production
High frequency welded (hfw) pipe production process is relatively simple, fast continuous production characteristics in the civil construction, petrochemical, light industry and other sectors have wide applications. Most used for transporting low-pressure fluid or made into a variety of engineeri...Read more -
Disadvantages of galvanized steel pipe
In spite of its many benefits, there are some advantages of galvanized steel pipe. When mixed with yellow brass, galvanized steel triggers dezincification, and it results in electrolytic action when combined with nonferrous metals, such as copper and brass. Galvanized steel should never be used u...Read more -
Coated steel pipe
Anti-corrosion steel pipe refers to use a special process to anti-corrosion treatment of ordinary steel pipe to make steel pipe with a certain degree of corrosion resistance. Generally used for waterproof, anti-rust, anti-acid oxidation and so on. Can effectively prevent or slow down the corrosio...Read more -
Difference between ERW and HFW
ERW steel pipe: low-frequency or high-frequency resistance welding manufacturing process with a straight seam steel pipe; HFW steel pipe: frequency equal to or greater than 70kHz welding current welding ERW Pipe. Electric resistance welding steel pipe: resistance welding a weldment combined press...Read more -
Defects in square tube piercing
Many square tube defects in perforation caused, so square and rectangular tube power transfer process is a key program production side of the tube. Perforation main difficulty lies in the low alloy high perforation performance, when necessary in order to ensure the quality of the deformation para...Read more -
Basic Knowledge of SSAW Steel Pipe
Spiral steel pipes are widely used industrial, construction and other industries . It’s raw mataerial is strip steel rolled plate , through normal temperature extrusion molding, with automatic double wire welding double-sided submerged arc welding technology with the spiral seam pipe. Mainly used...Read more