Product News
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Reasons for Uneven Wall Thickness of Large-diameter Seamless Steel Pipes
The problem of uneven wall thickness of large-diameter seamless steel pipes is relatively common in the production of seamless steel pipes, and it is also a headache for customers. The unevenness of the thick-walled seamless steel pipe is mainly reflected in the uneven spiral wall, the uneven lin...Read more -
How to Ensure the Quality of ERW Welded Pipe in Production?
From the analysis data of ERW welded pipe scrap, it can be seen that the roll adjustment process plays a very important role in the production of welded pipes. That is to say, in the production process, if the rolls are damaged or severely worn, part of the rolls should be replaced in time in the...Read more -
GB Standard for Welded Steel Pipes
1. Welded steel pipes for low-pressure fluid transportation (GB/T3092-1993) are also called general welded pipes, commonly known as black pipes. It is a welded steel pipe for conveying general lower pressure fluids such as water, gas, air, oil and heating steam and other purposes. Steel pipes are...Read more -
Contribution of Thick-walled Straight Seam Steel Pipe in Marine Engineering
The application of steel pipes in marine engineering is very common. There are roughly three types of steel pipes in the two major systems of shipbuilding and marine engineering: steel pipes in conventional systems, steel pipes used in construction, and steel pipes for special purposes. Different...Read more -
How to check the welding quality of elbow pipe fittings？
1. Appearance inspection of elbow pipe fittings: generally, the naked eye survey is the main method. Through appearance inspection, it can find the appearance defects of welding elbow pipe fittings, and sometimes use 5-20 times magnifying glass to investigate. Such as edge biting, porosity, weld...Read more -
How to inspect the welding quality of elbow fittings
1. Appearance inspection of elbow fittings: generally, visual inspection is the main method. Through the appearance inspection, it is found that the weld appearance defects of welded elbow pipe fittings are detected by 5-20 times magnifying glass sometimes. Such as undercut, porosity, weld bead, ...Read more
