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  • What are black steel pipes?

    What are black steel pipes?

    Black steel pipes are non-galvanized steel pipes. Black steel pipe, named for the scaly, dark iron oxide coating on its surface. It is used in applications that do not require galvanized steel. After applying a small amount of fitting compound to the threads, they are threaded onto the threaded p...
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  • Reasons for Uneven Wall Thickness of Large-diameter Seamless Steel Pipes

    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...
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  • How to Ensure the Quality of ERW Welded Pipe in Production?

    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...
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  • GB Standard for Welded Steel Pipes

    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...
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  • Contribution of Thick-walled Straight Seam Steel Pipe in Marine Engineering

    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...
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  • How to Choose a Seamless Steel Pipe Manufacturer & Supplier?

    How to Choose a Seamless Steel Pipe Manufacturer & Supplier?

    At present, there are too many seamless steel pipe manufacturers on the market. When preparing to purchase seamless pipes, there is no doubt that you must choose a reliable seamless steel pipe supplier, so that everyone does not have to worry about the product quality of the goods. There are also...
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