carbon steel flange

Welding Neck Flanges:

The welding neck flange is normally referred to as the "high hub" Flange. It is designed

to transfer stresses to the pipe, thereby reducing high stress concentrations

at the base of the Flange. The welding neck flange is the best designed butt-welded

flange of those currently available because of its inherent structural

value. It is expensive because of the design

Threaded (Screwed) Flanges:

The threaded flange is similar to the slip-on flange, but the bore is threaded. Its

chief merit is that it can be assembled without welding, explaining its use in

low pressure services at ordinary atmospheric temperatures and in highly explosive

areas where welding create a hazard.

Slip-On Flanges:

The slip-on flange has a low hub because the pipe slips into the flange prior to

welding. It is welded both inside and out to provide sufficient strength and prevent

leakage. Slip-on flanges are all bored slightly larger that the O.D. of the

matching pipe. They are preferred over welding neck flanges by many users due to

their lower initial cost, but final installation cost is probably not much less

than that of the welding neck flange because of the additional welding involved.

Lap joint Flanges:

The lap joint flange is practically identical to a slip-on flange except it has a

radius at the intersection of the bore and flange race. This radius is necessary

to have the flange accommodate a lap joint stub end. Normally, a lap joint flange

and a lap joint stub end are mated together in an assembly system.

Blind Flanges:

The blind flange is a flange without a bore. It is used to close off the ends of

a piping system and/or a pressure vessel opening. It also permits easy access to

the interior of a line or vessel once it has been sealed and must be reopened.

Socket Welding Flanges:

The socket welding flange is similar to a slip-on flange except it has a bore and

a counter bore dimension. The counter bore is slightly lager than the O.D. of the

matching pipe, allowing the pipe to be inserted into the flange similar to a

slip-on flange. The diameter of the smaller bore is the same as the I.D. of the

matching pipe. A restriction is built into the bottom of the bore which sets as

a shoulder for the pipe to rest on. This eliminates any restriction in flow when

using a socket welding flange.

We are manufacture of flange, our products is widely used in oil&gas industrial.
Material: Carbon steel ,stainless steel

Material:Carbon Steel

Country:China (Mainland)
telephone:86-317-6320860


Material:	Carbon Steel

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