ASME Flanges

American Flange Standards

American flange standards (ASME/ANSI) are widely used in petrochemical, oil & gas, and heavy industrial applications globally. These standards provide comprehensive specifications for various pressure classes.

ASME/ANSI B16.5

Pipe flange specs for sizes 15-600mm (1/2-24″). Weld neck, slip-on, socket weld, lap joint, blind, and threaded types.

Class 150

 Lapped, blind, socket weld, threaded, weld neck, long weld neck and slip-on flanges.

Class 300

 Lapped, blind, socket weld, threaded, weld neck, long weld neck and slip-on flanges.

Class 400

 Lapped, blind, socket weld, threaded, weld neck, long weld neck and slip-on flanges.

Class 600

 Lapped, blind, socket weld, threaded, weld neck, long weld neck and slip-on flanges.

Class 900

 Lapped, blind, socket weld, threaded, weld neck, long weld neck and slip-on flanges.

Class 1500

 Lapped, blind, socket weld, threaded, weld neck, long weld neck and slip-on flanges.

Class 2500

 Lapped, blind, threaded, weld neck and long weld neck flanges.

ASME/ANSI B16.47

Large-diameter pipe flange specs for 650-1500mm (26-60″). Weld neck and blind configurations in Series A and B types.

Class 150 A

 Weld neck and blind flanges.

Class 300 A

 Weld neck and blind flanges.

Class 600 A

 Weld neck and blind flanges.

Class 900 A

 Weld neck and blind flanges.

Class 150 B

 Weld neck and blind flanges.

Class 300 B

 Weld neck and blind flanges.

Class 600 B

 Weld neck and blind flanges.

Class 900 B

 Weld neck and blind flanges.

ASME/ANSI B16.48

Spectacle blind and spacer (line blank) flange specs for isolation in full face, raised face, and ring joint types.

Class 150

 Spectacle blinds, spacers, and line blinds.

Class 300

 Spectacle blinds, spacers, and line blinds.

Class 600

 Spectacle blinds, spacers, and line blinds.

Class 900

 Spectacle blinds, spacers, and line blinds.

Class 1500

 Spectacle blinds, spacers, and line blinds.

Class 2500

 Spectacle blinds, spacers, and line blinds.

ASME/ANSI B16.36

Orifice flange specs with pressure tapping points for flow measurement. Available in weld neck and threaded configurations.

2006 Edition

 Orifice flanges for differential pressure flow measurement.

 

Weld Neck flanges-WNRF- ASME B16.5 Class 900

Weld Neck flanges ASME B16.5 Class 900 lbs

ASME Flanges /

We are a reputable manufacturer and global supplier of ASME B16.5 Class 900 Weld Neck Flanges, offering forged steel flanges for high-pressure pipeline systems. Our Class 900 WN flanges are precision-engineered for critical applications in oil & gas, petrochemicals, refineries, and offshore industries.

Pressure Rating: Class 900 lbs
Size Range: ½” to 24” (DN15 – DN600)
Standard: ASME B16.5
Facing Type: RF (Raised Face), RTJ (Ring Type Joint)

Weld Neck flanges ASME B16.5 Class 900 lbs Read More »

Weld Neck flanges ASME B16.5 Class 150 lbs WNRF

Weld Neck flanges Class 150 lbs ASME B16.5

ASME Flanges /

We are a professional ASME B16.5 Class 150 Weld Neck Flanges manufacturer and supplier in China, offering a wide range of forged flanges suitable for low to moderate pressure applications. Weld Neck flanges (also known as WN flanges) are designed to be butt-welded to pipe, offering excellent stress distribution and resistance to dishing and distortion.

½″ (DN 15) to 24″ (DN 600)

Weld Neck flanges Class 150 lbs ASME B16.5 Read More »

ASTM-B564-Inconel-600-UNS-N06600-Weld-Neck-Flange-Raise-Face-ASME-B16.5

ASTM B564 Inconel 600 UNS N06600 Weld Neck Flange Raise Face ASME B16.5

ASME Flanges, Inconel / ,

We are a trusted manufacturer, exporter, and stockist of high-quality ASTM B564 Inconel 600 Flanges,WNRF,Weld Neck Flanges. these flanges are designed for use in high-temperature and corrosive environments, offering superior strength and reliability.

Size Range
½” to 48″ (DN15 to DN1200)
Pressure Class
Class 150, 300, 600, 900, 1500, 2500

ASTM B564 Inconel 600 UNS N06600 Weld Neck Flange Raise Face ASME B16.5 Read More »

ASTM-A182-F55-Flanges-UNS-S32760-Weld-Neck-Flanges-ASME-B16.5

ASTM A182 F55 Flanges UNS S32760 Weld Neck Flanges ASME B16.5

ASME Flanges, Stainless Steel /

We are a leading manufacturer and stockist of ASTM A182 F55 flanges, offering a wide range of Super Duplex stainless steel flanges for critical applications in offshore, chemical, and marine industries. Our F55 flanges provide excellent corrosion resistance, high mechanical strength, and superior performance in harsh environments.

A182 F55 Weld Neck Flange, ASTM A182 F55 Blind Flanges, Slip-On, Socket Weld, Threaded, Lap Joint, Long Weld Neck

Size Range: ½” to 48” (DN15–DN1200)

ASTM A182 F55 Flanges UNS S32760 Weld Neck Flanges ASME B16.5 Read More »

ASTM-B564-UNS-N08825-ALLOY-825-Weld-Neck-FLANGE-ASME-B16.5

ASTM B564 UNS N08825 ALLOY 825 Weld Neck Flange ASME B16.5

ASME Flanges / ,

We are a professional and expereienced manufacturer and exporter of ASTM B564 UNS N08825 WNRTJ flanges, also known as Alloy 825 Weld Neck Raised Face Ring Type Joint (WNRTJ) flanges. These flanges are widely used in industries such as chemical processing, marine engineering, offshore oil & gas, and pollution control due to their superior resistance to acidic environments, oxidation, and stress corrosion cracking.

ASTM B564 UNS N08825 ALLOY 825 Weld Neck Flange ASME B16.5 Read More »