Slip On (SORF)
 

Threaded
 

Socket weld (SWRF)
 

Weld neck (WNRF)
 

Lap Joint (LJFF)
 

Blind


Spectacle
Flanges
As per Material Standards: ASTM A105, A182, A203, A350, A694 & IS 2062
As per Dimensional Standards: ASME/ANSI B16.5, ANSI B16.47, B16.48, API 590, API 605, AWWA C207, BS 10, DIN 2633, MSS-SP-44
(Face Type: Flat Face, Raised Face & Ring Type Joint)

Size Range (NPS) As per ASME B16.5
Flange Type Pressure Class
150 # 300# 400# 600# 900# 1500# 2500#
Threaded 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 2-1/2" 1/2" - 24" 1/2" - 2-1/2" 1/2" - 2-1/2"
Slip On 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 2-1/2" 1/2" - 24" 1/2" - 2-1/2" -
Socket Welding 1/2" - 3" 1/2" - 3" - 1/2" - 2-1/2" - 1/2" - 2-1/2" -
Lap Joint 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24"
Blind 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24"
Weld Neck 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24"


Size Range (NPS) As per ASME B16.47
(Large Diameter Flanges Series A)
Flange Type Pressure Class
150 # 300# 400# 600# 900# 1500# 2500#
Weld Neck 26" - 60" 26" - 60" 26" - 60" 26" - 60" 26" - 48" - -
Blind 26" - 60" 26" - 60" 26" - 60" 26" - 60" 26" - 48" - -
 
 
Size Range (NPS) As per ASME B16.47
(Large Diameter Flanges Series B)
Flange Type Pressure Class
75# 150 # 300# 400# 600# 900# 1500#
Weld Neck 26" - 60" 26" - 60" 26" - 60" 26" - 36" 26" - 36" 26" - 36" -
Blind 26" - 60" 26" - 60" 26" - 60" 26" - 36" 26" - 36" 26" - 36" -
 
 
Size Range (NPS) As per ASME 16.48
Flange Type Pressure Class
150 # 300# 400# 600# 900# 1500# 2500#
Spectacle Blind 1/2" - 24" 1/2" - 24" - 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24"
Single Blind 1/2" - 24" 1/2" - 24" - 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24"
Spacer 1/2" - 24" 1/2" - 24" - 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24"
 
 
Size Range (NPS) As per API 590
Flange Type Pressure Class
150 # 300# 400# 600# 900# 1500# 2500#
Spectacle Blind 1/2" - 24" 1/2" - 24" - 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24"
Single Blind 1/2" - 24" 1/2" - 24" - 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24"
Spacer 1/2" - 24" 1/2" - 24" - 1/2" - 24" 1/2" - 24" 1/2" - 24" 1/2" - 24"
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