stub end is used together with lap joint flange.
the wall thickness of stub end complies with that of the steel pipe.
with the existance of stub end, the lap joint flange can be roated when coonecting with the other pipeline flange.
Flanged movable flange is also called loose flange and rotating flange. It is generally used in combination with flanging pipe joint. The pipe is connected with the flanging pipe joint by butt welding, and the flange is sleeved outside the flanging pipe joint.
Its advantages are that the flange can be rotated, and it is easy to align with the bolt hole. It is used in the places where the large pipe diameter is easy to install. The flanged flange is also suitable for the places where the pipe fittings need to be frequently disassembled for cleaning and inspection, or where it is only necessary to rotate the flange without rotating the pipe when aligning the flange bolt hole. When using this kind of flange, the material of the pipe joint must be consistent with that of the pipe, but the material of the flange may not be consistent with that of the pipe.
This kind of flange is more expensive than the flat welding flange with the same pipe diameter and pressure temperature grade because it is used together with the flanging joint. For particularly expensive pipes, it can sometimes achieve economic goals because flanges with different materials and cheap materials can be used. Its internal pressure bearing performance is the same as that of flat welding flange, but worse than that of butt welding flange. Its fatigue life is only 10% of that of butt welding flange, and it cannot be used under alternating stress.
FAQ 1.Q:What is the standard of flange?
A:The flange standards are DIN, ANSI, JIS, GB, BS, GOST, AS ect.You can choose the right flange according to the pipe requirements.
2.Q:Can you produce specific products according to customer requirements?
A:Yes,we can make it.
3. Q:Can we choose different materials?
A:Of course, you can choose different materials according to your requirements.
4.Q:Where is your nearest loading port?
A:Tianjin,Shanghai or Qingdao,in China.
5.Q:What is your shipment and delicery time?
A:By sea or air.Normally 7 to 14 days for delivery,according to your order quantity.
Special model can be customized
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