The blind flange which is called the flange cover--ASME B16.47 Class 300 Carbon Steel Blind flanges,Blind Flange

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· The blind flange which is called the flange cover
· Making process of forged fitting
· What aspects should be paid attention to the cap in summer
· Technical requirements for stainless steel pipe elbow
· Market forecast of large diameter carbon steel flanges
· The types of ERW Steel Pipe
· How to choose the material of stainless steel flange
· Manufacturing process of different diameter reducer


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The blind flange which is called the flange cover
Source :admin   Time:7/23/2018 10:09:23 PM   hit:

  The blind flange which is called the flange cover. It is a flange without holes in the middle to seal the pipe plug. There are many kinds of sealing surfaces, such as plane, convex, concave convex, tenon groove surface and ring connection surface.

  The production technology is mainly divided into three types: forged, casting and cutting.

  The ASME B16.47 Class 300 Carbon Steel Blind flanges are accurate in shape, small in processing and low in cost, but have casting defects (holes, cracks and inclusions), and the internal structure of the castings is poor (if it is a cutting piece, the streamline is worse).

  Forged blind flanges are generally lower than those of cast blind flanges with low carbon content and are not easy to rust. The forging is streamlined and compact in structure and better in mechanical properties than cast blind flanges.

  Improper forging process also causes large or uneven grains and hardening cracks. The forging cost is higher than that of casting blind flange.

  Forgings can withstand higher shear and tensile forces than castings.

  The advantage of casting is that it can produce more complicated appearance and lower cost.

  The advantage of forging is that the internal structure is uniform, and there are no harmful defects such as blowholes and inclusions in the casting.

  The difference between casting flange and forging flange is different from the production process, for example, centrifugal blind flange is a kind of casting blind flange.

  The centrifugal blind flange belongs to the precision casting method to produce the flange. This kind of casting is much finer than the ordinary sand casting, and has a lot of quality. It is not easy to appear loose, pore and trachoma.

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