Flange overlay is used to connect different – material pipeline,for example,if we want to connect carbon steel pipe to 304 steel pipe,we could use A105 flange,and weld SS304 overlay to flange face.Pls check below drawing to get a better understanding.

Overlay Clad Flange

TYPE:

Slip-On flange, Welding Neck flange, Socket Welding flange, Blind flange, Thread flange, Lap-Joint flange, Hub Blind flange, Long Welding Neck flange, Reducing flange, Light Weight flange,Orifice flange,RTJ flange, Spectacle Blind flange, Swivel Flange and  Anchor Flange

SIZE:

1/2” ~ 72” (15 mm ~ 1800 mm)

Class:

150LBS ~ 2500LBS

PN 2.5 ~ PN 400

MATERIALS:

Forged Carbon Steel

– ASTM A105, A105N / ASME SA105, SA105N

– ASTM A350 / SA350 GR LF2 (Class 1 & 2)

– ASTM A694 – F42, F46, F48, F50, F52, F56, F60, F65

– ASTM A516 – Gr.55, 60, 65, 70

Stainless & Alloy Steel

– ASTM A182/SA182 F5, F9, F11, F21, F51, F53,F55, F304/L, F316/L,

-1Cr5Mo,ASTM A234 GR.WP12,A335 GrP11,12CrMo,15CrMo

STANDARDS:

ANSI B 16.5 , ANSI B 16.36 , ANSI B 16.47, ANSI B 16.48 ,

AWWA C 207, API , ISO7004, DIN 1092-1

GOST 12821-80 WNRF FLANGE

GOST 12820-80 Plate FLANGE

and customer made specification is available upon request.

The only difference from regular flange is to weld overlay  to flange face.

The overlay material:SS304,SS316,API line material etc.