The difference between butt welding flange welding flange peace < / div >

we need to know what is the butt welding flange welding flange of peace.
the two flange main differences are the following: 1, the weld form different: flat welding seam can't X-ray detector, and butt weld. With flat welding neck flange pipe and flange welding form for fillet weld seam, and butt welding neck flange and pipe welding seam form for girth weld; Flat welding are two Angle joint girth weld, butt welding is a butt girth weld. With flat welding neck flange and the difference between flat welding flange without neck with flat welding neck flange is than without a flat welding neck flange in pipeline welding parts want to come out a more, not to bring a flat welding neck flange plate flange, convex platform is also flat fillet without flange. With butt welding neck flange connect to take over the weld seam belongs to a class B, with flat welding neck flange connect to take over the weld seam belongs to class C, nondestructive testing after welding.
2, material: with flat welding neck flange material thickness conform to the requirements for ordinary steel plate machining, and take more for forging steel butt welding neck flange material machining.
3, different nominal pressure, with flat welding neck flange nominal pressure as follows: 0. 6 - - - 4. 0 mpa, and with butt welding neck flange nominal pressure as follows: 1 - 25 mpa grade, obviously, with flat welding neck flange to adapt to the stress level is low.
4, different connection mode: with flat welding neck flange with butt welding neck flange on the structure and the biggest difference between pipe and flange connection way is different, with flat welding neck flange are generally pipe with flange Angle joint, and butt welding neck flange is a flange docking with the takeover. Flat welding flange can only be connected to the pipe, and cannot be directly connected to the butt welding pipe fittings; Butt welding flange can generally and all butt welding pipe fittings ( Include elbow, tee, reducer, etc. ) Direct connection, of course also includes the pipeline.

with butt welding neck flange rigidity than with neck stiffness of flat welding flange, butt welding than flat welding high strength, not easy to leak. With neck flat welding flange with butt welding neck flange can't replace, in terms of manufacturing Angle with flat welding neck flange, SO is short for SLIPON) Canon of big, mean weight is small, the cost is low, the other of nominal diameter greater than 250 mm belt butt welding neck flange, WN is the abbreviation of WELDINGNECK) To test, SO the flange does not need to test, SO the cost is relatively lower. With neck flat welding is the introduction of oil device, with more similar to American standard S0, butt welding neck flange used in highly harmful medium.