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  • Q235B Carbon steel flange sealing and welding

    Flange is a kind of disk part, common in pipeline engineering, flanges are used in pairs. In pipeline engineering, flanges are mainly used for connecting pipelines. In the pipeline that needs to be connected, a flange should be installed. Wire flange can be used for low-pressure pipeli...
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  • What technologies are needed for processing and heat treatment of carbon steel elbow

    In the process of heating and cooling of elbow, due to the inconsistent cooling speed and time between the surface and the heart, the temperature difference will be formed, which will lead to the uneven expansion and contraction of the volume and produce stress, that is, thermal stress. U...
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  • ASTM Carbon steel fittings composition

    Chemical Composition of ASTM A234 WPB & WPC Element Content, % ASTM A234 WPB ASTM A234 WPC Carbon [C] ≤0.30 ≤0.35 Manganese [Mn] 0.29-1.06 0.29-1.06 Phosphorus [P] ≤0.050 ≤0.050 Sulfur [S] ≤0.058 ≤0.058 Silicon [Si] ≥0.10 ≥0.10 Chromium [Cr] ≤0.40 ≤0.40 Molybdenum [Mo] ≤0.15 ≤0.15 Nickel [...
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  • Tee production

    https://www.crpipes.com/uploads/1.mp4
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  • Flange production

    https://www.crpipes.com/uploads/mmexport16559871555192.mp4
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  • Pipe fitting manufacturing process flow

    Pipe fitting manufacturing process flow

    1. Material 1.1. The selection of materials shall comply with the relevant standards of the pipe producing country and the raw material standards required by the owner. 1.2. After entering the factory, the inspectors first v...
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  • 2021 Shanghai fluid, pump valve and pipe fittings Exhibition

    2021 Shanghai fluid, pump valve and pipe fittings Exhibition

    On August 25 2021. Our company participated in the 9th Shanghai International fluid, pump valve and pipe fitting exhibition 2021 as a representative. At present, it is one of the largest and most professional international exhibitions in the fluid, pump valve and pipe fi...
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  • Export status of valves in China

    Export status of valves in China

    China's main valve exporting countries are the United States, Germany, Russia, Japan, the United Kingdom, South Korea, the United Arab Emirates, Vietnam and Italy. In 2020, the export value of China's valves will be more than US $16 billion, a decrease of about US $600 m...
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  • Development of main valve markets

    Development of main valve markets

    1. Oil and gas industry In North America and some developed countries, there are many proposed and expanded oil projects. In addition, because people pay more and more attention to environmental protection and the state has established environmental protection regulation...
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  • Data of China’s valve industry

    Data of China’s valve industry

    By 2021, the annual output value of China's valve industry has exceeded 210 billion yuan for many consecutive years, with an industry growth rate of more than 6%. The number of valve manufacturers in China is huge, and the number of large and small valve enterprises nati...
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  • Current situation, future opportunities and challenges of China’s valve industry

    Current situation, future opportunities and challenges of China’s valve industry

    Valve is the basic component of the pipeline system and occupies a very important position in the machinery industry. It has a wide range of applications. It is a necessary part in the transmission engineering of fluid, liquid and gas. It is also an important mechanical ...
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