Hebei Haihao Group specialized in flange, pipe fittings and steel pipe. 1.Size: 1/2″-60″ 2. Type: spectacle flange paddle space, paddle blank 3. Standard: ANSI B16.48 4. Material: carbon steel:A105 A694F42, A694F52, A694F60, A694F65, A694F70 and so on Alloy Steel: A182 F11, A182F22, ...

The forging process is generally composed of the following processes: blanking, heating, forming and cooling after forging. The forging process includes free forging, die forging. In production, different forging methods are selected according to the forging quality and production batch. Free fo ...

Hebei Haihao Group specialized in flange, pipe fittings and steel pipe. Below is the details of tube sheet flange: Features of tube sheet flange: (1) Forged Flange (2) Size: 10″-250″ (3) Class: PN0.6Mpa, PN1.0Mpa, PN2.5Mpa, PN4.0Mpa, etc (4) Stainless steel flange, carbon steel flan ...

The leakage occurs when the medium flows through the interface of inner and outer space. The root cause of leakage is the gap on the contact surface, and the difference in pressure and concentration between the two sides of the contact surface is the driving force of the leakage. In order to red ...

We know spiral wound gaskets have been used more and more widely in modern industry.But how to replace the spiral wound gasket when it breaks.There are some methods to removal the spiral wound gasket:(spiral wound gaskets installing and purchased) 1.Unloading method Symmetrical,uniform,take turn ...

It is necessary to purchase metal wound gaskets suitable for the current working conditions according to the conditions of the working conditions and the flange sealing surface type. When purchasing, try to use the products of the production enterprise with sound and effective operation of the q ...

So firstly we need to know what is hot galvanizing?Hot-dip galvanizing is an effective way of metal corrosion protection,which is mainly used in metal structures and facilities of various industries.It is to immerse the steel parts after rust removal into the molten zinc solution melting at abou ...

In the connection of pipeline flange, leakage and crack will occur after a long time without maintenance or under the influence of stress, which will directly affect the use of the flange. Therefore, when discovering the leakage of the flange, it is necessary to timely deal with it and make up t ...

How much do you know about flange types and sealing surfaces?Make a list today so you can understand more clearly. Flanges Standard Sealing surface Class grade PN，MPa Common valve supporting flange Type Code form Code Plate flange PL HG20593、 JB/T81-94、 GB/T9119-2000 Raised face RF 0.2 ...

The flange gasket used in general petrochemical equipment and sealed pipeline is usually made of asbestos (serpentine asbestos) and rubber. Its sealing texture has good oil resistance, heat resistance, corrosion resistance and tensile strength, so it is widely used in various industries to make ...

There are three types of spectacle flange:spacer,spade(paddle flange),spectacle blind flange.A spectacle blind flange is a combination of a spade and a spacer. The connection of spectacle blind plate is applicable to the connection of pipe fittings with diameter of φ 50-315mm. Its performance fe ...

Swivel flange is also called swivel ring flange.Which is consist of a forged outer ring flange,a heavy forged welding hub and a retainer ring.the hub can be rotated when the flange is installed.The outer ring flange is held in position by a retainer ring and can freely rotates around the inner w ...