China ASME B 16.5 A105 forged flanges Welding neck WN RF flanges

JS FITTINGS - the leading manufacturer of ASME B 16.9 forged carbon steel flanges in China 

JS FITTINGS produce CS forged flange since 1983, welding neck flange from 1/2 to 60 inch.

JS FITTINGS produce and export forged carbon steel pipe flanges to Russia, UAE, UK, Thailand, Malaysia, Brazile, Mexico, Nigeria, etc.

As a professional forged flanges manufacturer, we are experienced in the production of ASME, EN, SABS, JIS, and GOST flanges, especially WN RFflanges SCH40, SCH 60,sch80, SCH 120, SCH 160, etc.

What is a weld neck(WN) flange?

ASTM A105 welding neck flanges including ASME B16.5 WN flanges and ANSI B16.47 WN flanges.  

Weld neck flange (WN flange RF) is the most popular flange type, there is a neck extension with a weld bevel at the end. The WN flange is designed to butt weld to a pipe end directly, to provide a superior and relatively natural form connection. In larger sizes and higher pressure classes, this is almost exclusively the type of flange connection utilized.

The V-type bevel end joints to the pipe end ensure the uniform circular weld, resulting in a unified transition. It allows the pipeline gas or liquids to flow through the flanges by the minimum limit. The welded bevel should be inspected after welding to ensure the seal is uniform and normal.

Another special feature for welding neck flange is a tapered hub. This type of flanges makes the pressure force gradually distribute from the pipe to the base of the flanges, thus help it withstand the impacts from use under the working environment with higher pressure and temperature. The mechanical stress would be a limited cause of the extra steel material of the tapered hub.

The higher pressure classes almost totally need this type of flanges connection, so the weld neck flanges usually made with sealing face of ring type joint (RTJ). This kind of sealing face allows the metal gaskets impressed in the grooves between two connected flanges, in order to form superior sealing. So welding neck flange with RTJ face is the main choice for pipeline application.

Production of forged A105 flanges

Trustworthy flange manufacturer in Cangzhou, Hebei, China

As a professional manufacturer, JS FITTINGS specializes in supplying forged carbon steel flanges, such as ASME b 16.5 / ANSI flange, blind flanges ASME b16.5 / ANSI blind flanges, WN flange ASME b16.5 / weld neck flanges RF. We are cooperating with more than 5 Freight forwarding companies, all of them are professional agents of transportation. 

Since 1983, JS FITTINGS has become a leading manufacturer and supplier in Yanshan Cangzhou city. The bestsellers are flange WN, plate flanges, blind flanges, ANSI 150 flange, ANSI 300 flange, etc. JS FITTINGS supply free WN Flange 300# samples of carbon steel pipe flange for testing. 

JS FITTINGS is able to produce unified standard flanges and customized flanges. According to ASME B 16.5, the tolerance of flange thickness is ±1mm, but ±0.5mm is also available. 

Product information

Factory Perspective

JS FITTINGS is located in Yanshan County, Cangzhou City, Hebei Province. The ASME B 16.5, ANSI B 16.47, ASME B 16.48 WN flanges, SO flanges, blind flanges, plate flanges, SW flanges, threaded flanges, and spectacle flanges are produced in different product lines. JS FITTINGS WN Flange 300# is a hot-sale type of the carbon steel pipe flange ANSI B16.5.

Marks and package of the steel WN flanges

Customized package and standard package

Flanges in a smaller size will be packaged in plywood cases, bigger size flanges will be packaged on pallets with plastic film and package belt. For better protection, customers can ask for a rubber mat. All special demands should be mentioned in the contract. 

Generally, there is 4 popular surface treatment for ASME standard ASTM A105 flanges, anti-rust flanges, yellow-painted flanges, black painted flanges, and hot-dipped galvanized flanges. Red painted flanges and other colors can also be made. 

Download the 150# WN flange dimension

Information of blind flanges ASME b16.5

Our service

JS FITTINGS supply professional service for customers about inquiry questions, free samples, testing reports, certificates, signing contracts, producing links, shipping time, and another after-sale service. 

1. Please don’t hesitate to contact JS fittings with your BOQ, after confirming all the necessary elements, we will supply you our best offer within 24 hours.

2. JS FITTINGS is also pleased to provide free samples smaller than 2 inches for your testing. Other Bigger sizes and courier costs can be negotiated.

3. JS FITTINGS has the certificates of ISO 9001, CE, and PCT.  All reasonable demands on inspection and test are acceptable in the contract.

4. Details about payment security assurance, quality assurance, delivery time, and after-sale service please contact us directly. 

What's APP: +86-18633894868

Email: admin@chinajsgj.com

As a 37-year producer, we supply customers with high-quality flanges, professional cooperation guidance, and after-sale service.  If you want to know more standard information about plate flanges dimensions, WN flange ANSI b16.5, WN flange 300#, blind flanges, WN flange class 150, 150# WN flange dimensions,  don't hesitate to contact us. 

Related Products

JS FITTINGS has 36-year experience of producing and exporting ASTM A 105 ANSI/ASME B 16.5 welding neck (WN) flanges, Slip-on (SO) flanges, Blind flanges, Plate/flat flanges, Threaded flanges, socket welding flanges, etc. 

If you need to know the carbon steel pipe flange dimensions, carbon steel pipe flange weights, carbon steel pipe flange ratings, and other data, please click the ASME B 16.9 Specification Table. If you want to know more about JS FITTINGS, please click the Factory Facility, Our Team, and Certifications.