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

Hebei Haihao Flange Factory

Hebei Haihao Flange Factory
  • Common problems in casting flange use

    Common problems in casting flange use

    During flange casting, liquid metal is filled into the mold and solidified during rotation.Flange casting has the following characteristics: liquid metal can form a mold with a freely selected hollow cylinder surface, so that the hollow casting does not have a core, thus greatly simplifying the ...

  • Introduction of rolling large diameter flange

    Introduction of rolling large diameter flange

    Rolling flange is cut into strips with medium plate, and then rolled into circular welding joint, and then processed by flattening process. It can be divided into cold coil and hot coil. After being processed into a circle, the water line, bolt hole and mouth stop are processed. This is generall ...

  • How to choose the materials of stainless steel flanges?

    How to choose the materials of stainless steel flanges?

    Flange is a disc-shaped connecting part that is connected between pipe ends and closed at the same time. It is the most common in pipeline engineering, such as the connection of ventilation pipes. Flange materials include carbon steel, low alloy steel and stainless steel. Among them, stainless s ...

  • What is high pressure flange?

    What is high pressure flange?

    The core of high pressure self tightening flange is a new unique seal, which is formed by elastic deformation of sealing lip (T-Arm) of sealing ring, which belongs to hard seal. A strong rigid body is formed by the combination of joint, ferrule and sealing ring, which makes the strength of the c ...

  • Difference between FF flanges and RF flanges

    Difference between FF flanges and RF flanges

    Flanges are an integral part of the Piping industry, which are used to form a link between two different Pipes. Flat (FF), Raised (RF), Ring Joint (RTJ), lap joint (M&F), tongue, and groove (T&G) are the 6 styles of flange faces needed. Multi-faced flanges need different gaskets and shou ...

  • What's the heat treatment of large flange?

    What’s the heat treatment of large flange?

    In large diameter flange heat treatment, the heating temperature is a key index, the choice of heating temperature and control involves the quality of heat treatment and quality of the final product, so in the large diameter flange pipe fittings such as heat treatment process, how to choose prop ...

  • The factors affecting the performance of large flanges

    The factors affecting the performance of large flanges

    In the consumption of large flanges, there are many factors affecting the performance of large flanges. Let’s talk about several common factors below. First, the annealing temperature (annealing temperature is the temperature parameter when primers and templates are separated, and when 50% ...

  • Working principle of pressure vessel flange

    Working principle of pressure vessel flange

    The working principle of pressure vessel flange is that when the pre-tightening force is applied to the flange bolt, the bolt force compresses the gasket through the flange ring, forcing the flange gasket to produce compression deformation.(Sealing principle of pressure vessel flange) When the b ...

  • Characteristics and standard of flexible flanges

    Characteristics and standard of flexible flanges

    Flexible flanges are mainly used in the fields of oil, chemical, pharmaceutical and other industrial businesses. With further demand of industrial production, new requirements have been put forward for flexible flanges. If you want to know the characteristics of flexible flanges, first you need ...

  • Introduction to water line flange

    Introduction to water line flange

    Water line flange is the flange with water line. For the flange with the same type Du sealing surface, if there is water line on the sealing surface, the sealing effect is better and the applicable pressure is higher. There are no specific standards for waterlines. Generally, they are custom pro ...

  • The factors that affect the sealing effect of pressure vessel flange

    The factors that affect the sealing effect of pressure vessel flange

    In the last article,we introduced the working principle of the pressure vessel flange.Next step,we will introduce the factors that affect the sealing effect of the pressure vessel flange. 1.Bolt tension A proper preload can ensure that the sealing gasket can retain a certain sealing specific pre ...

  • The determination of flange yield strength and its influencing factors

    The determination of flange yield strength and its influencing factors

    Determination of flange yield strength For metal materials without obvious yield phenomenon, it is necessary to measure the specified non proportional extension strength or specified residual elongation stress, while for metal materials with obvious yield phenomenon, the yield strength, upper yi ...