Flanges

A flange is a piping component that provides a secure, leak-proof connection between sections of pipe or between pipes and other equipment (valves, pumps, vessels). Flanges feature a flat, machined face with bolt holes that allow two mating flanges to be fastened together with a gasket in between, ensuring a reliable seal under pressure.

SPECIFICATION MATERIAL GRADE
CARBON STEEL ASTM A105 ASME SA105
ASTM A266 ASME SA266 Gr1/Gr2/Gr3/Gr4
ASTM A350 ASME SA350 LF1,LF2,LF3
ASTM A694 ASME SA694 F42,F46,F48,F50,F52,F56,F60,F65
ALLOY STEEL ASTM A182 ASME SA182 F1,F2,F5,F5A,F9,F91,F11 CL1~CL3,F12 CL1~CL2, F22 CL1, F22 CL3
ASTM A508 ASME SA508 CL1,CL2,CL3
STAINLESS STEEL ASME SA182 ASTM A182 F6A,F304,F304L,F304H,F310,F310H,F316,F316L,F316H,F316Ti,F317,
F317L,F347,F347H,F321,F321H,F44,F64,F904L
DUPLEX S/DUPLEX STEEL ASTM A182 ASME SA182 F51,F53,F55,F60
INCONEL INCOLOY ASTM B564 ASME SB564 N06625, N08825, N04400,N08800
COPPER ASTM B171 C70600, C46400,C10200,C11000,C12200
ITEMS TYPE
NON-STANDARD RING TYPE 5000Ø
BLIND TYPE(TUBE SHEET) 3000Ø
STANDARD FLANGE CODE SPECIFICATION SIZE RATING
ASME B16.5 / API 1/2″~24″ #150~#2500
ASME B16.47 ( MSS-SP-44 )( API 605 ) 12″~60″ #150~#900
26″~60″ #75~#900
ASME B16.36 1″~24″ #300~#2500
AWWA C207 4″~144″ CLASS B,D,E,F
EN1092-1 / BS4504 / DIN DN10~DN4000 PN2.5 ~ PN100
API 6A/6BX 2 1/16″~30″ 2000psi~20000psi
BS3293 26″~48″ #150~#600
TAYLOR FLANGE 26″~96″ #125~#350
JIS B2220 / KS B1503 10A ~ 1500A 5K~30K
FLANGE TYPE WELD NECK FLANGES,BLIND FLANGE,SLIP ON FLANGE,THREAD FLANGE
Socket Weld Flange ASME B16.5

Socket Weld Flange | SW Flange Raised Face

ASME Flanges, Flanges /

Socket Weld Flange | SW Flange Raised Face

Socket Weld Flange also known as SW flange,features a bore and a counter-bore. The pipe fits into the counter-bore (socket), and a fillet weld is applied at the outer edge of the hub. The design ensures smooth bore alignment with the pipe, minimizing flow restrictions.

Connection: Socket + fillet weld (no need for beveling the pipe)

Size Range: Typically from ½” to 4” (up to 6” available)

Pressure Classes: Class 150, 300, 600, 900, 1500

Face Types: Raised Face (RF), Flat Face (FF),Ring Joint

ASME B16.5

Socket Weld Flange | SW Flange Raised Face Read More »

Blind Flange Ring Joint BLRTJ BLRF

Blind Flange BLRF, BFRTJ

Flanges /

A blind flange (also called a ‘closure plate flange’ or Blank Flange) is installed at the end of a piping system to terminate a pipe. It has no centre hole (bore), so there is no flow through the flange. A blind flange may be used for isolating a pipe, valve, or pressure vessel.

ASME B16.5 Blind Flange
ASME B16.47 Blind Flange
EN 1092-1 Type 05 Blind Flange
JIS B2220 Blind Flange

Blind Flange BLRF, BFRTJ Read More »

Weld Neck Flange WNRF WNRTJ

Weld Neck flange (WN RTJ WNRF WNFF)

Flanges /

A Weld Neck Flange (WN flange) is a type of flange designed for high-pressure and high-temperature applications, commonly used in oil & gas, petrochemical, power plants, and pipeline industries.

ASME B16.5
ASME B16.47 Series A & B

EN 1092-1 Type 11 Weld neck Flange

GOST 33259 Type 11 Weld neck Flange

DIN 2630 PN 1 and PN 2.5, DIN 2631 PN 6, DIN 2632 PN 10, DIN 2633 PN 16, DIN 2634 PN 25, 2635 PN 40

GOST / JIS / BS standards available on request

Weld Neck flange (WN RTJ WNRF WNFF) Read More »

API 6A Weld Neck RTJ Flange manufacturer

API 6A Type 6B 3000 PSI Weld Neck Flanges

Flanges /

we specialize in producing high-performance Weld Neck Ring Type Joint (RTJ) flanges compliant with API 6A standards, designed for critical oil & gas applications and high-pressure environments up to 20,000 PSI.

Our API 6A flanges are precision-forged and machined from premium materials such as AISI 4130, ASTM A105, A694 F60,Inconel 625, and other NACE-compliant Materials

API 6A Type 6B 3000 PSI Weld Neck Flanges Read More »

ASTM A182 F53 Weld neck Flanges UNS S32750 ASME B16.5

ASTM A182 F53 Weld neck Flanges UNS S32750 ASME B16.5 B16.47

ASME Flanges, Flanges /

Weld Neck Flanges made from ASTM A182 F53 are high-performance, corrosion-resistant flanges manufactured from Super Duplex Stainless Steel UNS S32750. These flanges are ideal for high-pressure and corrosive environments such as offshore, petrochemical, and desalination plants.

Material: ASTM A182 Grade F53
UNS Number: S32750
Common Type: Weld Neck, Slip-On, Blind, Lap Joint Flanges
Standards: ASME B16.5 / B16.47 / EN 1092-1

ASTM A182 F53 Weld neck Flanges UNS S32750 ASME B16.5 B16.47 Read More »

API 6A Weld Neck RTJ Flange manufacturer

API 6A Type 6B 5000 psi(34.5 MPa) Weld Neck RTJ Flange

Flanges /

we specialize in producing high-performance Weld Neck Ring Type Joint (RTJ) flanges compliant with API 6A standards, designed for critical oil & gas applications and high-pressure environments up to 20,000 PSI.

Our API 6A flanges are precision-forged and machined from premium materials such as AISI 4130, ASTM A105, A694 F60,Inconel 625, and other NACE-compliant Materials

API 6A Type 6B 5000 psi(34.5 MPa) Weld Neck RTJ Flange Read More »