flanging welding steel hemisphere tubing cover for boiler  :

1.diameter:300-4400mm

   thickness:3-150mm

   straight flange:40-100mm

2.standards: GB/T 25198-2010, ASME VIII

3.processing method:hot pressting,cold pressing

4.beveling:the angle is acc. to your requirements ,(it can be groove in , groove outside , and both inside and out side)

5.appearance treatment: sandy -blasting, antirust treament.....

6.nondestructive testing: Untrosonic testing .  Radiographic testing, Magnetic testing, Penetrant testing.

7.Testing:no destructive (UT,RT,MT,PT)

8.License:

9.application: different material and specification dished ends can be used in many fileds ,such as petroleum , chemical industry , boiler, pressure vessels , railway transportation, metal structure, water supply facilities and aerospace engineering, etc.

Please pay attention:

No cracks ,delaninations , inclusion, and other defects imperfections

We own Asian unique production line which can  make diameter of 12m heads and supply OEM service.

If you are interested in our products,please contact with me!