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Carbon Steel A105 Industry Standard Welding Neck Flange

  • Carbon Steel

  • ANSI

  • China (Mainland)

  • Standard

  • Export standard packaging.

  • Depends on your order quantity.


Carbon Steel Welding Neck Flange :

Carbon Steel A105 Industry Standard Welding Neck Flange :

Brief Description:

Welding Neck Flange Size 
Weld Neck Flange:1/2"~72"
Industry Flange Pressure 
American Series:CLASS 150,CLASS 300,CLASS 400,CLASS 600,CLASS 900,CLASS 1500,CLASS 2500
Flange Facin Types
American Series:FF,RF,RJ Welding Neck Flange

ASME Standards

Pipe flanges that are made to standards called out by ASME B16.5 or ASME B16.47 are typically made from forged materials and have machined surfaces.ASME B16.5 WN Flange refers to nominal pipe sizes (NPS) from 1/2" to 24". ASME B16.47 Welding Neck Flange covers NPSs from 26" to 60".ASME B16.47 delineates its flanges into pressure classes 75,150,300,400,600,900 etc.

The term flange is also used for a kind of tool used to form flanges.Welding Neck Flange is circumferentially welded into the systemat its neck which means that the integrity of the buttwelded area can be easily examined by radiography.The bores of both pipe and flange match, whichreduces turbulence and erosion inside the pipeline.The weld neck is therefore favoured in criticalapplications.Pipes with flanges can be assembled and disassembled easily.

Ritia Group are located in Cangzhou City,Hebei Province,which is very near to Xin Gang Port.And four sales department in Cangzhou city,Beijing city,Qingdao city,Jiaxing city,Zhejiang.The factory covers an area of 36000 square meters,has more than 260 employees,including 27 professional technicians.


Product name:

Welding Neck Flange


ANSI B16.5, ASME B16.5, ASME B16.47A/B


ASTM A105, 20#, Q235

Or as per customer’s special requirement.


Butt welded flange,Slip on flange,Plate flange,Blind flange,Socket flange,Threaded flange, Lap Joint Flange.






150#---3000#, 5K---63K, PN6---PN400

Or as per customer’s special requirement.

Surface treatment:

Black painting, anti-rust varnish, anti-rust oil or as per customer’s requirement.


Wooden case and wooden pallet.


Within 25 days after getting necessary deposit or original L/C.


ISO 9001:2008


We have professional flange production equipment in China, all of flanges are produced by ourself, so we can give you BEST price with BEST quality, hope we will co-operate with each other based on mutual benefits.