• Post time: 11-02-2020

    Long-distance oil and gas pipelines are connected by a large number of single steel pipes. 1b fedlitate the on-site butt joint construction, the steel pipe manufacturer needs to machine the designed welding groove and blunt edge on the pipe end of each steel pipe and ensure the cutting accuracy o...Read more »

  • Post time: 10-27-2020

    Cold drawn pipe is 6 different classification according to their production process, different from the hot-rolled (expanded) pipe. In raw wool tube or pipe through the process of expanding the multi-pass cold drawing processing, usually In 0.5 ~ 100T single chain or double chain drawing machine....Read more »

  • Post time: 10-20-2020

    API steel pipe Is most commonly made by using a duplex stainless steel or a grade of Iron that has higher nickel content, such as a six percent of Mo material or high nickel alloys. Ferrite stainless steels are very resistant to api sreel ppe but grades may vary with equivalent pitting resistance...Read more »

  • Post time: 10-13-2020

    Flange connection is an important connection method for pipeline construction. Flange connection is to fix two pipes, pipe fittings, or equipment on a flange plate respectively, add flange pads between the two flange plates, and fasten them together with bolts to complete the connection. Some pip...Read more »

  • Post time: 10-12-2020

    Across the regions, producers of welded linepipe and oil-country tubular goods (OCTG) saw their margins shrink with substrate costs increasing in the third quarter of 2020. Many have been attempting to protect margins with higher prices, with varying degrees of success. Europe-origin commodity-gr...Read more »

  • Post time: 10-09-2020

    Prevent decarburization of steel pipe surface The key to resolving the problem of surface decarburization lies:n the heat treatment process. Since the decarburization and the oxidation of the steel wire are carried out at the same time, as long as the steel wire is kept in contact with air as lit...Read more »

  • Post time: 09-29-2020

    Galvanized steel pipe is the surface with hot-dip galvanized or electro-galvanized layer. Galvanized steel can increase corrosion resistance and prolong life. Galvanized steel pipe is widely used, except for water, gas, oil, generally low-pressure fluid line pipe, also used oil heater oil industr...Read more »

  • Post time: 09-17-2020

    With the spread of the novel corona virus pneumonia epidemic, the black series has weakened as a whole. After the market opened on February 3, the black series of futures collectively fell to the limit. The overall market was strong and the trading was light. Before the official opening of the Ta...Read more »

  • Post time: 09-15-2020

    Steel pipe anti-corrosion coating process 1: Due to the use of curtain coating, the coating film sags seriously. Besides, due to the unreasonable design of the roller table and chain, the coating film has two longitudinal and multiple circular scratches. This process is removed. The only merit of...Read more »

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