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Insulating Joint, Flange, Butt Welding Fitting, Valve Supplier
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As pipe flanges for different industrial applications, threaded flanges are widely demanded. They are special types of pipe flanges that can be attached to the pipe without welding. Threaded flanges are threaded in the bore to match the external threads on the pipe.

The threaded flange is tapered to create a seal between the threaded flange and the pipe as the taper approaches the same diameter. Seal welds are sometimes used in conjunction with threaded connections. They are available in a variety of sizes and materials.


Changhao is a specialized manufacturer and exporter of threaded or threaded flanges with in-house precision machining facilities. We produce threaded flanges in sizes ranging from 1/2" to 24" NPS according to ANSI B16.5, DIN standards and EN1092-1. We can also manufacture and supply carbon steel flanges and alloy steel flanges for high pressure and high temperature applications. We produce threaded flanges in stainless steel, cupro-nickel, titanium and special alloys.

Our threaded flange manufacturing process includes full heat treatment as well as chemical and mechanical property checks. We have CNC machines and conventional lathes for machining and processing all types of threaded flanges.

Why choose Changhao as your threaded flange supplier?

Over 20 years of experience in stocking and supplying threaded flanges

Best price for threaded flanges manufactured by Changhao and exported to the world

Exporting threaded flanges is our specialty

We can handle the logistics of delivery to any port for you

We provide documentation including - Certificate of Origin, invoice and PL certified by the Chamber of Commerce, test certificate according to EN 10204 3.1, other test reports that our customers may require.

Complete traceability of threaded flanges - all our products will be fully marked on the flange and/or packaging and the details can be linked to the test certificate.


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