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

Hebei Haihao Flange Factory

Hebei Haihao Flange Factory
  • Knowing these points, you can have high quality weld neck flange

    Knowing these points, you can have high quality weld neck flange

    How can we have a high quality butt-welded flange with neck,which is what many of us want to know.Let us explain the following points for you, so that you have a high quality butt welding flange with neck. 1: The processing size of the butt-welded flange with neck, the material and specification ...

  • With these three methods, there is no problem in stainless steel flange processing

    With these three methods, there is no problem in stainless steel flange processing

    Flanges are parts that connect the pipe to the pipe and are connected to the pipe end. At the same time, the flange is also a disc-shaped part, which is most common in pipeline engineering. The flanges are used in pairs and with the matching flange on the valve. So, do you know what are the comm ...

  • Advantages and production process of butt welding flange

    Advantages and production process of butt welding flange

    Butt welding flange,also known as split flange, is a kind of flange. The flange is the part that makes the pipe and the pipe connect with each other, and is connected to the pipe end. There are holes in the flange, and the bolts make the two flanges tightly connected. Butt welding flange, gasket ...

  • The most prone problems in flange processing

    The most prone problems in flange processing

    We all know that layer-by-layer steps are required in flange processing, but have you ignored this problem? Let’s talk about it. The forging process of the flange for overburning means that the heating temperature of the metal billet is too high or the residence time in the high temperatur ...

  • Carbon steel ASTM A105 forgings require heat treatment or not

    Carbon steel ASTM A105 forgings require heat treatment or not

    ASTM A105 was common used in forgings in standard MSS,ASME and API. Or the specification by purchaser.In some product description request heat treatment,or ASTM A105N. here the “N” refer to normalizing,one kind of heat treatment ,but some don’t make clearly request to heat treatment ...

  • Do A105 flanges need to be tested for low temperature impact?

    Do A105 flanges need to be tested for low temperature impact?

    Recently, a batch of 2″- 28″ flanges, material: A105, standard: ASME B16.5/ASME B16.47. Those flanges are about to be shipped to Mexico. The customer wants to do a low temperature impact test before delivery. As we all know that the low temperature impact test refers to the degree of ...

  • How to extend the service life of flange?

    How to extend the service life of flange?

    Flange as steel products are easy to rust corrosion, which will shorten its service life. So we should pay attention to the surface anti-corrosion of flange. Lately, a new customer sent me an inquiry. During the communication, he told me that there was a large area of rust after the flange bough ...

  • The difference between forged flange and machined flange

    The difference between forged flange and machined flange

    Although forged flange and machined flange are of the same kind, actually they are quite different. Today I will introduce the difference between those two flanges briefly. EN 1092 1 forged slip on flanges The forging process of flange is generally lower in carbon and less prone to rust than tha ...

  • Insulating flanges are used in three cases

    Insulating flanges are used in three cases

    Generally, in the pipeline connection, there are often some dangerous factors, including leakage, galvanic corrosion and static electricity, which cause accidents. Therefore, the common flange connection is not enough, and the insulating flange with insulation characteristics must be used. Here, ...

  • What is an insulating flange?

    What is an insulating flange?

    An insulating flange can also be referred to as flange insulation kid or flange isolation kid(FIK). Insulating flanges are those flanges equipped with plastic parts that insulate and prevent the flow of current between two metal surfaces.Insulating flanges are used in cathodic protection systems ...

  • Application area of blind flanges

    Application area of blind flanges

    Blind flanges are the most used flanges,our flange products are widely used in the following industries: oil,gas, chemical,shipbuliding,water treatment,power plant,steam,construction and other fields all over the world.The application area of blind flanges as follows: ANSI B16.5 ASTM A182 F304 b ...

  • Flange sealing surface type

    Flange sealing surface type

    Flange sealing cover is basically: Full-plane FF protruding surface RF concave surface FM convex surface M tenon surface T groove surface G ring connection surface RTJ(RJ) five types, according to the working conditions, media, pressure, specifications, temperature and other conditions, so the t ...