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19.03.2024

Factors Ensuring High-Frequency Welded Pipe Product Quality and Their Impacts

To ensure that the quality of high-frequency welded pipe products meets technical standards and customer needs during the production process, it is essential to analyze the factors affecting product quality...
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  • Posted: 08/15/2020 15:14:22  Hits: 20
    There are several inspection methods: Tensile test On the tensile testing machine, the following results can be obtained by stretching the sample: Yield point (yield strength): Under the force of the tensile machine, the specimen is stretched. At the beginning, the elongation of the specimen is proportional to the...
  • Posted: 07/08/2020 12:08:50  Hits: 28
    Seamless steel pipe is a steel pipe without welding seam manufactured by hot processing methods such as perforated hot rolling. If necessary, the hot-processed tube can be further cold-processed to the required shape, size and performance. At present, seamless steel pipes (DN15 - DN600) are the most widely used pipes in...
  • Posted: 06/12/2020 17:46:43  Hits: 10
    The development of steel pipe technology began with the rise of bicycle manufacturing. It strongly promotes the development of steel pipe industry in terms of variety, output and quality due to the development of oil in the early 19th century, the manufacture of ships, boilers and planes during two world wars, including...
  • Posted: 05/27/2020 16:00:45  Hits: 25
    According to the use and pipe materials, the commonly used connection methods for building pipeline are: ① threaded connection, ② flange connection, ③ welded connection, ④ groove connection (hoop connection), ⑤ cartridge connection, ⑥ hot melt connection, ⑦ socket connection. This article explains in detail the standard...
  • Posted: 02/26/2020 00:18:07  Hits: 71
    Landee just completed one big steel pipe order. After several rounds of audit and inspection by clients and SGS, we are glad to see the pipes our client ordered have been shipped. This is an extraordinary order in Landee company history. We would like to share this good news with our customers. And the finish of this order...
  • Posted: 10/13/2019 09:50:24  Hits: 47
    How to connect the whole valve with the pipeline or equipment, this problem can not be ignored, because the running, bubbling, dripping and leaking of the valve mostly occur in connection parts. 1. Flange connection Flange connections are the most used form of connection between valves and piping or equipment. It refers...
  • Posted: 04/29/2019 16:05:04  Hits: 122
    Date: October 30th - November 1st, 2019 City: Shanghai, China Venue: Shanghai New International Expo Center (SNIEC) Organizers: China Steel Structure Association Steel Pipe Branch, Shanghai Steel Tube Association Co-organizers: China Special Steel Enterprises Association, Shanghai Society for Metals, Metallurgy Chamber...
  • Posted: 04/03/2019 14:05:55  Hits: 60
    When the chromium-nickel austenitic stainless steel is heated to a temperature range of 450-800 °C, corrosion along the grain boundary often occurs, which is called intergranular corrosion. Generally speaking, intergranular corrosion is actually caused by the precipitation of carbon from the saturated austenitic metallurgical...
  • Posted: 03/06/2019 16:26:37  Hits: 63
    Pure chromium ferritic stainless steel has no significant increase in hardness after quenching. During the forging process, work hardening will occur and the hardening degree varies with temperature and shape variables. This kind of steel has no rigorous requirement for the cooling temperature after forging. Ferritic stainless...
  • Posted: 03/05/2019 15:15:47  Hits: 59
    Stainless steel is widely used in chemical industry, petroleum industry, power plant, etc., and many products require not only corrosion resistance, but also high strength, so most stainless steels are used after forging. Compared with carbon steel, stainless steel has characteristics such as low thermal conductivity,...