Forged Flanges W.N.S.W. and S.O.

Forged Flanges, W.N., S.W. and S.O.  are best sell forged flanges . If you require Forged WN Flange , Forged Weld Neck Flanges , 150 Wn A105 Flange , A105N Slip On Flange , A350 LF2 Forged flanges , welcome to contact us freely .

Pipe flanges that are made to standards called out by Asme B16.5 or ASME B16.47, and MSS SP-44. They are typically made from forged materials and have machined surfaces. ASME B16.5 refers to nominal pipe sizes (NPS) from ½" to 24". B16.47 covers NPSs from 26" to 60". Each specification further delineates flanges into pressure classes: 150, 300, 400, 600, 900, 1500 and 2500 for B16.5, and B16.47 delineates its flanges into pressure classes 75, 150, 300, 400, 600, 900. However these classes do not correspond to maximum pressures in psi. Instead, the maximum pressure depends on the material of the flange and the temperature. For example, the maximum pressure for a Class 150 flange is 285 psi, and for a Class 300 Flange it is 740 psi (both are for ASTM A105 Carbon Steel and temperatures below 100F).

Flange dimensions are determined by the pipe size and the pressure class required for the application. Flanges are standardized according publications from organizations like ASME, MSS, API and others.

ASME/ANSI B16.5flange provides

Flange Type :

Thread Flange

Blind Flange

Slip On Flange

Weld Neck Flange

Spectacle Blind Flange

Spacer & Spade

LWN Flange

Orifice Flange

flange dimensions for pipes ranging 1/2" to 24" - in classes ranging 150 to 2500.

· Steel Pipe Dimensons - Schedule 40

· Steel Pipe Dimensions - Schedule 80

Weld neck flanges are circumferentially welded at the neck where the integrity of the butt welded area can be easily examined by radiography. The bores of both pipe and flange match, which reduces turbulence and erosion inside the pipeline. The weld neck is therefore durable in critical applications.

Weld neck pipe flanges are typically provided with a raised face, flat face, or RTJ facing. When a raised face is necessary for weld neck pipe flanges, the standard height is 1/16" for weld neck pipe flanges under 400#. For weld neck pipe flanges of 400# and up, the standard weld neck pipe flange raised face height is 1/4"

Slip on Flange is essentially a ring that is placed over the pipe end, with the flange face extending from the end of the pipe by enough distance to apply a weld bead on the inside diameter.

The OD of slip on flange is also welded on the back side of the flange. Slip on flanges have a lower material cost than weld neck flange and are more easily aligned.

Slip on flange may also be used a lap joint flanges if Type B or Type C stub ends are used.

Product Categories : Steel Flange > Weld Neck Flange