Blind pipe Flanges

Blind pipe Flanges

blind flange
Types: plane, convex, concave, etc
For use: seal pipe plug
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Product Details

Blind pipe Flanges

Types: plane, convex, concave, etc

For use: seal pipe plug

       Blind plate flange (blind flange) also known as blind plate, the correct name is called flange cover. Is a flange with no holes in the middle for sealing the pipe plug. There are many types of sealing faces, including plane, convex, concave, tenon, ring joint. 

      One of its functions is to seal the end of the pipe, and the other is to facilitate the removal of sundries in the pipeline during maintenance. As far as sealing effect is concerned, it has the same function as head and pipe cap. But there is no way to remove the head, and the flange blind plate is bolted and easily removed. Flange blind plates are made of carbon steel, alloy steel, stainless steel, plastic, etc.

Types: plane, convex, concave, etc

For use: seal pipe plug

matters need attention

      Flange blind plate is not galvanized when used in oil medium system, hot galvanizing should be used in other medium system, minimum weight of galvanizing layer is 610g / m ~ 2, hot dip galvanizing quality inspection is according to CB*/Z343

production engineering

Production technology is mainly divided into forging, casting, cutting, these three kinds.

Cast and forged flanges

      Cast flange, blank shape and size accurate, small processing, low cost, but casting defects (porosity. Crack. Inclusion); poor streamline shape of inner structure of castings (even worse in case of cutting parts);

Forging flanges generally have lower carbon content than casting flanges and are not easy to rust. Forgings have better streamline shape, compact structure and better mechanical properties than foundry flanges.

      If the forging process is not proper, the grain size will be large or uneven, the hardening crack will occur, and the forging cost will be higher than that of the casting flange.

Forgings can withstand higher shear and tensile forces than castings.

     The advantages of castings are that they can produce more complex shapes and lower cost.

The advantages of forgings are that the internal structure is uniform and there are no harmful defects such as pores and inclusions in the castings.

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