Stainless Steel Pipe Flanges

Flanges are normally manufactured in seven basic ratings: 150 Lb, 300 Lb, 400 Lb, 600 Lb, 900 Lb, 1500 Lb and 2500 Lb. The ratings can be expressed in different ways but mean the same thing - 150 Lb, 150 Lbs, 150# or Class 150.

Flange types including blind, butt weld, lap joint, slip-on, socket weld, and threaded, are available in a variety of sizes and shapes.

Specifications: ASTM A182 / A240 & ASME SA182 / SA240

Dimensions: ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.

Standard: ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.

Size: 1/2" (15 NB) to 48" (1200NB)

Class / Pressure: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

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Description

Flange - ASME B16.36, Orifice Flange (1/2"-24")
Slip-on Flange: Class 300, Class 400, Class 600, Class 900, Class 1500
Threaded Flange: Class 300, Class 400, Class 600, Class 900, Class 1500
Weld Neck Flange: Class 300, Class 400, Class 600, Class 900, Class 1500, Class 2500

Flange - Industry Standard Flange (also called Large Diameter Flange) (26"-larger)
Industry Standard Flanges have no national standard code or are they covered by any governing body.
Blind Flange: Class 75, Class 125, Class 175, Class 250, Class 350
Weld Neck Flange: Class 75, Class 125LW, Class 125, Class 175, Class 250, Class 350
Slip-on Flange: Class 75, Class 125LW, Class 125, Class 175, Class 250, Class 350

Flange - AWWA Standard Flange
AWWA C207
Steel Ring Flange: Class B, Class D, Class E, Class F
Steel Hub Flange: Class D, Class E
Blind Flange: Class B, Class D, Class E, Class F