China JIS B2220 Soh Neck Flange Stainless Steel Manufacturers

Difference between flat welding flange and butt welding flange
Welding method
In the name we can clearly see the difference between the two: flat welding and butt welding. Specifically, the pipe diameter and wall thickness of the joint end of the flat welding flange are the same as the pipe to be welded, and they are welded together in a flat way. The butt welding flange is a recess with a slightly larger diameter than the outer diameter of the pipe. The pipe is inserted in the socket and then welded.
On materials
Compared with Ningbo butt-welded flanges, flat-welded flanges are simpler in structure, use less material, and have less rigidity and tightness than butt-welded flanges. Generally, it is mainly used in the connection of medium and low pressure vessels and pipelines.
3. Processing
The butt welding flange adopts a punching die to punch into a half-ring elbow or a casting mold to directly cast into a half-ring elbow, and then two half-ring elbows are welded in groups. The flat welding flange uses a gasket, which is a ring made of a material that can produce plastic deformation and has a certain strength.

Company Service & Our Advantages
1. Q: Are you a factory or a trading company? A: We are a manufactor of Forged Flange. Also, we have many qualified cooperated mills to supply flange Fittings and Pipes. We also do OEM for europe mills for long time.
2.Q: How can you ensure the quality?A:Quality as our most imfortant point in our business. And ensure that all the raw materials are 100% inspected absolutely according to our customers' request. We inspect chemical composition for every lot of our material , and supply the record to issue the 3.1 Quality Certificate. We can provide the 3.1 Quality Certificate together with the shipping documents if you need.
3.Q:How long would be the delivery?A: Factory direct sales, We offer goods in Fastest Delivery time as we can according to the quantity and request.
4.Q: How about the packing?
A: Wooden Pallet or Wooden box as per customers' requirements.