Flanges
Flanges (Stainless, Carbon, Alloy, Nickel, Copper, Hastelloy, Inconel, Monel)
Flanges are critical components in piping systems, used to connect pipes, valves, pumps, and other equipment to form a secure and leak-proof system. They are available in various materials, grades, standards, and types to suit diverse industrial applications. Below is detailed information on different flange categories, including their range, grades, standards, and types.
Range:
Sizes: 1/2″ to 48″ (DN15 to DN1200)
Pressure Ratings: ANSI 150 to 2500, PN6 to PN100
Wall Thickness: Sch 5S to Sch XXS
Grades:
Austenitic: 304, 304L, 316, 316L, 321, 347
Duplex: 2205 (UNS S31803/S32205)
Super Austenitic: 904L
Standards:
ASTM A182, ASME B16.5, B16.47, DIN, JIS, EN 1092-1
API 605, MSS SP-44 for large diameter flanges
Types:
Weld Neck
Slip-On
Socket Weld
Blind
Lap Joint
Threaded
Orifice
Applications:
- Widely used in chemical processing, oil and gas, food and beverage, and pharmaceutical industries due to excellent corrosion resistance and durability.
Range:
Sizes: 1/2″ to 72″ (DN15 to DN1800)
Pressure Ratings: ANSI 150 to 2500, PN6 to PN160
Wall Thickness: Sch 10 to Sch 160, XXS
Grades:
Carbon Steel: ASTM A105, A350 LF2, A694 F42/F52/F60/F65/F70
Alloy Steel: ASTM A182 F1, F5, F9, F11, F22, F91
Standards:
ASTM A105, A350, A694, ASME B16.5, B16.47
DIN 2630-2638, EN 1092-1
API 6A for high-pressure applications
Types:
Weld Neck
Slip-On
Blind
Socket Weld
Threaded
Reducing
Long Weld Neck
Applications:
Ideal for high-pressure and high-temperature applications in oil and gas, power generation, and petrochemical industries.
Range:
Sizes: 1/2″ to 24″ (DN15 to DN600)
Pressure Ratings: ANSI 150 to 1500, PN10 to PN64
Wall Thickness: Sch 10S to Sch 80S
Grades:
Nickel Alloys: Nickel 200, Nickel 201
Copper Alloys: C70600 (Cu-Ni 90/10), C71500 (Cu-Ni 70/30)
Standards:
ASTM B564 (Nickel), ASTM B151 (Copper-Nickel)
ASME B16.5, B16.47, DIN, JIS
NACE MR0175 for sour service environments
Types:
Weld Neck
Slip-On
Blind
Socket Weld
Threaded
Lap Joint
Applications:
Used in marine, chemical, and desalination industries due to excellent resistance to seawater corrosion and high thermal conductivity.
Range:
Sizes: 1/2″ to 24″ (DN15 to DN600)
Pressure Ratings: ANSI 150 to 2500, PN6 to PN100
Wall Thickness: Sch 10S to Sch 80S
Grades:
Hastelloy C276, C22, B2, B3, X
Standards:
ASTM B564, ASME B16.5, B16.47
DIN, EN 1092-1
NACE MR0175 compliant
Types:
Weld Neck
Blind
Slip-On
Socket Weld
Threaded
Orifice
Applications:
Preferred in aggressive chemical environments, such as acid processing, waste treatment, and pollution control systems.
Range:
Sizes: 1/2″ to 36″ (DN15 to DN900)
Pressure Ratings: ANSI 150 to 2500, PN6 to PN100
Wall Thickness: Sch 5S to Sch XXS
Grades:
Inconel 600, 601, 625, 718, 825
Standards:
ASTM B564, ASME B16.5, B16.47
API 6A, DIN, JIS
ISO 15156 for high-temperature applications
Types:
Weld Neck
Slip-On
Blind
Socket Weld
Threaded
Lap Joint
Applications:
Used in aerospace, gas turbines, and high-temperature environments due to superior strength and oxidation resistance.
Range:
Sizes: 1/2″ to 24″ (DN15 to DN600)
Pressure Ratings: ANSI 150 to 1500, PN10 to PN64
Wall Thickness: Sch 10S to Sch 80S
Grades:
Monel 400, K500
Standards:
ASTM B564, ASME B16.5, B16.47
DIN, JIS, EN 1092-1
NACE MR0175 for corrosion resistance
Types:
Weld Neck
Slip-On
Blind
Socket Weld
Threaded
Applications:
Suitable for marine engineering, chemical processing, and hydrocarbon processing due to excellent resistance to saltwater and acidic environments.
Range:
½” to 60” (DN 15 to DN 1500)
Pressure Ratings:
- 150# to 2500# (PN 20 to PN 420)
Wall Thickness:
- As per ASME B16.5 / B16.47 standards
Grades:
- A182 F1, F5, F9, F11, F22, F91, A105
Standards:
- ASTM A182 / ASME
- SA182
- ASME B16.5
- ASME B16.47
- EN 1092-1
- DIN
Types
- Weld Neck (WN)
- Slip-On (SO)
- Blind (BL)
- Socket Weld (SW)
- Threaded (TH)
- Lap Joint (LJ)
- Ring Type Joint (RTJ)
- Spectacle Blind
Applications:
- Oil & Gas
- Petrochemical
- Chemical
- Power Generation
- Water Treatment
- Marine
- General Industrial