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

Hebei Haihao Flange Factory

Hebei Haihao Flange Factory
  • How about the difference between SS304 and SS316?

    How about the difference between SS304 and SS316?

    SS304 and SS316 are the most used stainless steel materials.The main differences between 304 stainless steel and 316 stainless steel are: Differences in the main components of both metal: 304 stainless steel and 316 stainless steel contain about 16 ~ 18% chromium, but 304 stainless steel contain ...

  • Characteristics and properties of stainless steel 304

    Characteristics and properties of stainless steel 304

    Characteristics and uses of 304 stainless steel 304 stainless steel is the most widely used type of chromium-nickel stainless steel. It has good corrosion resistance, heat resistance, low temperature strength and mechanical properties. It is resistant to corrosion in the atmosphere. If it is an ...

  • Something you need to know about stainless steel products

    Something you need to know about stainless steel products

    Stainless steel products are widely used in our life and industry. Do you know the characteristics of stainless steel? Please come with Haihao Group to learn some knowledge of stainless steel. General characteristics of stainless steel: Beautiful surface and diverse use possibilities Good corro ...

  • Welded requirement for large size fitting and flange

    Welded requirement for large size fitting and flange

    Compared with the standard flange pipe fitting, the welding seam requirements are very strict, this is because the use of large flange pipe fitting environment requires higher strength.Therefore, strict testing technology is the key to ensure the welding quality of large flange pipe fittings.For ...

  • Anchor flange used in

    Anchor flange used in “West to East Gas Transmission Project”

    The west to east gas transmission project is an important pipeline system project in China. Among them, there are many kinds of flange used and they play an important role. Anchor flange is one of them. The anchor flange is a kind of very important supporting component in large diameter, high pr ...

  • Different packing methods of piping products

    Different packing methods of piping products

    Hebei Haihao Group specialized in flange, fittings and pipe production.When products finished, packing following. Packing aims to protect the flange, fittings and pipe during transportation and storage. Hebei Haihao Group can do kinds of packing for seaworthy and airworthy. For example, pallets ...

  • How to select right gasket for flange connection?

    How to select right gasket for flange connection?

    Gasket plays an important role in pipeline connection,to choose the proper flange gasket, should take into consideration the following:Temperature,Pressure,Corrosion resistance,Fluid type,Robustness,Availability,Cost. While gaskets are relatively cheap components of the whole piping system,but i ...

  • 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 ...