All Product
Industry Information

Introduction of Slip-on Flange Forging Methods
This technical article introduces us about some main forging methods of slip-on flanges according to the movement of the forging die.

How to Correctly Select Flange
This technical article introduces us in details about that some main ways and methods that we can choose and select flanges correctly.

Thin-walled SS Tube Is Increasingly Widely Used
With the implementation of reform and opening policy and the development of economy, thin-walled stainless steel tubes are more and more popular.

Venezuela's Manufacturer Will Set Up Factories in Cuba
The company is evaluating the factory of the pipeline construction project, thus it is going to set up factories in Cuba.

NDRC: Increase Gas Imports and Oil Reserves in Winter
The National Development and Reform Commission decided to increase gas imports and oil reserves in this winter in the meeting held on November 13.

Home » News » Features of Flat Welding and Butt Welding of Flange

Features of Flat Welding and Butt Welding of Flange

author: jeawin   time: 2015-06-24 08:16   hits: 871

Flat welding and butt welding are two methods of flange connection. Flat welding flange only needs one-side welding instead of welding inside of the flange connection, and butt welding flange installation requires flange to be welded by both sides. Butt welding flange is applied for butt welding of flange and pipe, with reasonable structure, reliable sealing and higher strength and stiffness, it can withstand high temperature and pressure, alternating bending and temperature fluctuation.


Advantages of butting welding flange: butt welding flange is not easy to deform, having good sealing and wide application, having corresponding rigid and elastic demand and reasonable butt thinning transition. Welded junction has a good distance away from the joint face, protecting the joint face from deformation because of welding temperature. It adopts more complex syndromes beep form structure, suitable for pipelines of high pressure or temperature fluctuations or high temperature, high pressure and low temperature pipes, also used for transporting expensive, inflammable, explosive media of pipelines.


Horizontal welding of plate welding is general called Flat welding. Flat welding flange is suitable for steel pipe connection whose nominal pressure is not more than 2.5 MPa. Sealing surface of Flat welding flange can be made into smooth type, concave and convex type and mortise type. Smooth welded flange is the most widely used, and it is most used in mild conditions of medium, such as low pressure purified compressed air and low pressure circulating water, and its advantage is that its price is lower. Butt welding flange is suitable for pipelines of pressure or high temperature fluctuations or pipes of high temperature, high pressure and low temperature, also used to transport expensive, inflammable, explosive media in the pipeline.


Features of Flat Welding and Butt Welding of Flange