Hebei Haihao High Pressure Flange Pipe Fitting Group Co.,Ltd

Hebei Haihao Flange Factory

Hebei Haihao Flange Factory
  • Laser cutting method of weld neck flange

    Laser cutting method of weld neck flange

    Weld neck flange is a kind of pipe fittings, which refers to the flange with neck and transition of round pipe and Welding-Neck connection with pipe. Weld neck flange is not easy to deform, well sealed and widely used. It has corresponding rigid and elastic requirements and reasonable weld neck ...

  • The process characteristics and functions of large diameter flange

    The process characteristics and functions of large diameter flange

    Large diameter flange is a kind of flange, which is widely used and promoted in the machinery industry. The flange made in our factory has been praised and loved by users. Large diameter flange materials are carbon steel, stainless steel, alloy steel, etc. Large diameter flange is widely used, a ...

  • Cancel the export tax rebate of some steel products, is it good or bad for the steel industry?

    Cancel the export tax rebate of some steel products, is it good or bad for the steel industry?

    Tariffs on some steel products will be adjusted from May 1, 2021, according to a notice posted on the website of the Ministry of Finance.Among them, pig iron, crude steel, recycled steel raw materials, ferrochrome and other products to implement zero import tariff rate;We will appropriately rais ...

  • Characteristics and installation of blind flange

    Characteristics and installation of blind flange

    Blind flange is commonly known as flange cover and blind plate (BL flange). The blind flange is similar to a steel plate edge drilling, because there is no inner hole in the middle, so it becomes a blind flange. Its connection mode is to connect with the flange, and its main function is to block ...

  • P245GH flanges to Singapore shipyard

    P245GH flanges to Singapore shipyard

    As shown in the figure, our company recently produced a batch of P245GH flanges. After strict quality and production control and solid packaging, we ordered a ship to be shipped to Singapore before the May Day holiday. According to the communication from the customer, this batch of high quality ...

  • What is the Tubesheet?

    What is the Tubesheet?

    Tubesheet is a kind of round steel, which is used to fix the tube and seal the medium in the heat exchanger. It is a kind of fitting which can weld and fix the pipe. The precision of tubesheet processing, especially the pipe hole spacing and pipe diameter tolerance, perpendicularity and finish, ...

  • Hot dip galvanizing for flange

    Hot dip galvanizing for flange

    Hot dip galvanizing is an effective way of metal anticorrosion. Flanges hot dip galvanizing refers to the production of flange molding, after rust immersed in the molten zinc at about 500 degrees Celsius, so that the surface of the flange steel member is attached to zinc layer, so as to achieve ...

  • How to clean the carbon steel flange?

    How to clean the carbon steel flange?

    Once the flange appears rust or the surface of the flange stains, it will cause damage to the flange itself, and may even affect the entire pipeline transport, so that the pipeline leakage. Carbon steel flanges may have cleaning problems after tempering during heat treatment. For example, improp ...

  • Method of flange connection

    Method of flange connection

    Flange connection consists of a pair of flanges, a gasket and a number of bolts and nuts. Flanges with holes, can wear bolts, so that the two flanges are tightly connected, between the flanges with gasket sealing. The gasket is placed between the sealing surface of two flanges. After the nut is ...

  • What are the common obstacles of flange?

    What are the common obstacles of flange?

    If the problem of flange leakage can not be handled in time, the leakage will expand rapidly under the medium corrosion, form data loss, damage the production environment, make the enterprise stop production, and form huge economic losses. If the accident is the leakage of toxic, flammable and e ...

  • Spectacle blind flange ASME B16.5

    Spectacle blind flange ASME B16.5

    Spectacle blind flange ASME B16.5 is designed to isolate or connect piping systems.It consists of two discs connected by flat steel, one is  solid and the other hollow ring with the same diameter as the flange.Spectacle blind flange ASME B16.5 is independent of other facilities or equipment in t ...

  • Corrosion of stainless steel flange

    Corrosion of stainless steel flange

    Stainless steel flange has the ability of corrosion in the medium containing acid, alkali and salt, namely corrosivity; it also has the ability of anti atmospheric oxidation, namely, rust resistance; however, the size of its corrosion ability varies with the chemical composition of the steel its ...