Square flange

square flange

A square-shaped flange which is used between pipe to pipe or pipe to component connections (valves, tees, etc.) is known as the Square Flange. They are mostly found in various hydraulic systems. With Square Base Flange once can be ensured about getting seamless flow and they are available in sizes between ¼ inches to 6 inches.

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Square flange specification


Square Flange Specification

Square Flange Standard Size Range Pressure Class
  • ASME B16.5 square flange
  • 1/4″ to 6″
  • DN150 – DN 800

For any kind of fabrication work contact above square flange suppliers in UAE

  • 210 Bar
Manufacturing Method Thickness Of Hydraulic Square Flange Connection Type
  • Plate
  • Casting
  • CNC machined square flange from bar stock
  • Forged square flange (Strongest choice)

All top 5 square flange suppliers are leading and supplied square floor flange to South Africa, UAE, Qatar, UK, Egypt & USA

  • SCH 10 / 10S to Schedule 160
  • Socket Welding
  • Weld-in
Checklist Marking and Packaging Testing Requirements
  • Diameter of square flange bolt circle & bolt hole
  • Straightness and alignment of square pipe flange bolt hole
  • Outer & Inner Diameter of hydraulic square flange body
  • Sizes
  • Production code of square flange manufacturers
  • Bore (if applicable)
  • Dimensional standard (ASME B16.5)
  • Face type
  • Heat code
  • Manufacturer’s name, brand logo
  • Material specification
  • Pressure Rating Designation
  • MTC EN 10204 type 3.1
  • Impact test
  • NACE MR0175
  • PMI
  • Hardness test
  • Visual inspection for A105 square flange surfaces, welding & holes
  • Tensile test
  • Shell pressure test
  • ISO 15156
Face Types Surface Finish Bolts Holes
  • Raised face – (RF)
  • Flat face – (FF)
  • Spiral serrated
  • Serrated finish
  • Stock finish
  • Smooth Finish
  • 2 to 4

 

Check ANSI b16.5 square threaded flange dimensions and specification for carbon steel square flanges in custom sizes.

Cast, plate & forged square pipe flange material

Forged Plate Cast
Ductile Iron Square Flange
ASTM B381 GR.F2 ASTM B367 GR.C2
Titanium Square Flange
ASTM B381 Grade F2 ASTM B265 UNS R50400 ASTM B367 GR.C2
ASTM B381 Grade F3 ASTM B265 UNS R50550 ASTM B367 GR.C3
Copper Square Flange
ASTM B283 UNS C37700 ASTM B152 UNS C10100 ASTM B22/B22M
ASTM B124 UNS C63000
Duplex / Super Duplex Square Flange
ASTM A182 F51 ASTM A240 UNS S31803 ASTM A351 CD3MN
ASTM A182 F53 ASTM A240 UNS S32750 A890 GR.5A CE3MN*
ASTM A182 F55 ASTM A240 UNS S32760 A890 GR.6A CD3MWCuN
Al 6XN ASTM A240 UNS N08367 ASTM A351 CN3MN
ASTM A182 F44 ASTM A240 UNS S31254 ASTM A351 CK3MCuN
ASTM A182 F60 ASTM A240 UNS S32205
Stainless Steel Square Flange
ASTM A182 F304 square flange ASTM A240 304 ASTM A351 CF8
ASTM A182 304L ASTM A240 304L ASTM A351 CF3
ASTM A182 310 ASTM A240 310 ASTM A351 CK20
ASTM A182 F316 Square flange ASTM A240 316 ASTM A351 CF8M
ASTM A182 316L ASTM A240 316L ASTM A351 CF3M
ASTM A182 316LN ASTM A240 316LN ASTM A351 CF3MN
ASTM A182 317 ASTM A240 317 ASTM A351 CG8M
ASTM A182 317 ASTM A240 317L ASTM A351 CG3M
ASTM A182 F347 ASTM A240 347 ASTM A351 CF8C
ASTM A182 F321 ASTM A240 321
ASTM A182 F904L ASTM A240 904L ASTM A351 CN2MCuN
ASTM A182 F6A ASTM A217 CA15
ASTM B462 UNS N08020 ASTM B 463 N08020 ASTM A351 CN7M
Copper Nickel Square Flange
Copper nickel 90/10 : ASTM B151 UNS C70600 ASTM B122 CU-Ni 90/10 ASTM B466 CuNi10Fe 1Mn
Copper nickel 70/30 : ASTM B151 UNS C71500 ASTM B122 CU-Ni 70/30 ASTM B466 CuNi30Mn1FE
EEMUA 234 : UNS 7060X
EEMUA 145
EN 1652/ 12420/124491
Nickel Alloy Square Flange
Inconel 800 – ASTM B564 ASTM B409 UNS N08800 A484 CU 5MCuC*
Inconel 825 – ASTM B564 ASTM B409 UNS N08825 A484 CU 5MCuC*
Inconel 600 – ASTM B564 ASTM B168 UNS N06600 A494 CY40*
Inconel 601 – ASTM B564 ASTM B168 UNS N06601
Inconel 625 square flange – ASTM B564 ASTM B168 UNS N06625 A494 CW6MC*
Monel 400 square flange – ASTM B564 ASTM B127 UNS N04400 A494 M35-1
Monel K500 – ASTM B564 ASTM B127 UNS N05500 A494 M30H
Hastelloy C-22 – ASTM B366 ASTM B575 UNS N06022 ASTM A494 CX2MW
Hastelloy C276 square flange – ASTM B366 ASTM B575 UNS N10276 ASTM A494 CW12MW
Carbon Steel Square Flange
ASTM A105 square flange ASTM A515 Grade 60
ASTM A105N CS ASTM A216 Grade WCB and WCC
ASTM A350 Gr LF2 (CL 1& CL2) ASTM A352 Grade LCB and LCC
ASTM A350 Gr LF3 ASTM A352 LC3
ASTM A350 Gr LF6
LTCS ASTM A352 Grade LCC
ASTM A694 F42 ASTM A572 Gr 42
ASTM A694 F46
ASTM A694 F50 ASTM A572 Gr 50
ASTM A694 F52
ASTM A694 F60 ASTM A572 Grade 60
ASTM A694 F65 ASTM A572 Grade 65
ASTM A694 F70 ASTM A572 Grade 70
S235JRG2, P250GH, 1.4541, 1.4571
Alloy Steel Square Flange
ASTM A182 Grade F5A & F5 ASTM A387 Grade 5 ASTM A217 Gr C5
ASTM A182 F1
ASTM A182 F9 ASTM A387 Grade 9 ASTM A217 Gr C12
ASME/ ASTM A182 F11 ASTM A387 Grade 11 ASTM A217 Gr WC6
ASTM A182 F22 ASTM A387 Gr 22 ASME/ ASTM A217 Grade WC9
ASTM A182 F91 ASTM A387 Gr 91 ASTM A217 Grade C12A

Square Flange Material

Most popular ASME B16.5 square flange types

Types of square flange

  • CNC machined square flange
  • Forged square flange
  • Plate square flange (made from plate)
  • Cast square flange

 

Square flange size chart

No. Of Bolts Hole
Size Bolts Hole Number
150 8
200 12
250 12
300 12
400 12
500 16
600 16
700 20
800 20

 

Pressure class Of ISO 6164 square flange

ASME B16.5 square flange
  • 150 PSI
  • 250 PSI
  • 300 PSI
  • 350 PSI
  • 400 PSI
  • 600 PSI
  • 900 PSI
  • 1500 PSI
  • 2500 PSI

 

Specification of Copper nickel square flange

Cu-Ni Square Flange Sizes Outer & Drilling Diameter Of Cupro Nickel Square Pipe Flange Large Size Of Copper Nickel Square Floor Flange
  • ½” To 36″
  • 16MM To 914MM
  • ½ inch – 24 inch
  • 16MM – 610MM
  • 24″ – 36″
  • 711 To 914MM

Accoding to MSS SP-44

CUNI Hydraulic Square Flange Pressure Class in Bar Composite Copper Nickel Square Wall Flange Are Manufactured From Recommended Hardware Of UNS C70600 Square Duct Flange
  • 16 bar
  • 20 bar
  • ASTM A105N
  • Welded UNS C70620 copper nickel disk
  • As per ANSI/ASME B16.5
C70600 Square Steel Flange Coating Copper Nickel 2 Hole Square Flange Types Applications Of C71500 4 Bolt Square Flange
  • Hot dipped galvanising
  • Composite square flange
  • Solid square flange
  • Marine applications
  • Petroleum plants
  • Petrochemical
  • Seawater
  • Offshore
Grade UNS Number Standard
  • Copper nickel 90/10
  • Copper nickel 70/30
  • UNS 7060X
  • UNS C70620
  • CW352H
  • EEMUA 234/3-6
  • EN 12420
  • WL 2.1972
  • MIL-T-16420K
  • EEMUA 145
  • EN 124491
  • DIN 86019
  • ASTM B4662
  • EN 1652
  • ASTM B467
  • EEMUA 234

 

Temperature range of Alloy steel square flange

Alloy Grade UNS Forged square flange Casting square flange DIN WNR Temperature range
Moly steel square flange C-1/2Mo K12822 ASTM A182 Gr F1 cl2 ASTM A217-WC1 15M03 1.5415
  • Up to 470ºC*
  • 875ºF
Alloy steel chrome moly square flange 1.1/4Cr-1/2Mo K11572 ASTM A182 Gr F11 cl2 ASTM A217 WC6 13CRM044 1.7335
  • Up to 593ºC
  • 1100ºF
2.1/4Cr-1Mo K21590 ASTM A182 Grade F22 cl3 ASTM A217 Gr WC9 10CRM0910 1.7380
  • Up to 593ºC
  • 1100ºF
5Cr-1/2Mo K41545 ASTM A182 Grade F5/F5a ASTM A217 Gr C5 12CRMO195 1.7362
  • High temp boiler/ refinery application
9Cr-1Mo K90941 A182 Gr F9 A217-C12 X 12 CrMo 9 1 1.7386
  • High temp erosive refinery application
9Cr-1Mo-V A182 Gr F91 A217-C12A X 10 CrMoVNb 9 1 1.4903
  • High pressure boilers
Alloy steel square flange AISI 4130 square flanges G41300 ASTM A182 ASTM A217/M  1.7218
  • 899 to 927°C
  • 1650 to 1700°F

 

Germany DIN standard Of hydraulic square flange

  • DIN 24193

British BS standard Of 2 hole square flange

  • BS ISO 6164

Japanese JIS standard Of carbon steel square flange

  • JIS 280K square flange
  • JIS 210K square flange
  • JIS b2291 hydraulic square flange
  • JIS F7806 square flange
  • JIS b2291 square flanges

ISO standard Of stainless steel square flange

  • ISO ISO 6164 square flange

Square flange dimensions

SHA/SHB (210 KGF/CM²)

Square flange dimensions

 

DN A B C O Ring Minimum Of bolt length D E F G H I
10 63 40 11.5 G 25 M10 X 55 30 17.8 28 11 22 11
20 68 45 20.0 G 30 M10 X 55 35 27.7 38 12 22 11
25 80 53 25.0 G 35 M12 X 70 40 34.5 45 14 28 13
40 100 70 37.5 G 50 M16 X 90 55 49.1 63 18 36 18
50 112 80 47.5 G 60 M16 X 90 65 61.1 75 20 36 18
65 140 100 60.0 G 75 M20 X 110 80 77.1 95 22 45 22
80 155 112 71.0 G 85 M22 X 120 90 90.0 108 25 45 24
100 190 140 87.3 G 105 M24 X 140 110 115.4 135 28 60 27
150 270 195 128.8 G 155 M36 X 190 165 166.9 193 35 80 39

 

Working pressure of JIS 280k square flange

  • 210kg/cm²
  • ​280kg/cm²
  • 350kg/cm²

 

Square flange weight chart

DN Weight in KG
8 1.30
10 1.30
15 1.40
20 1.50
25 2.60
32 3.15
40 5.10
50 5.90
65 11.40
80 14.10
100 25.50
125 41.00
150 68.50

 

Configuration of SAE square flange

  • SHAB
  • SSAB
  • KAB
  • LSA

 

ASME b16.5 square threaded flange stockist in Sharjah. Check stainless steel square flanges dimensions, function, and price list

The Square Pipe Flange is highly useful in various high pressure industries including hydraulic lines when connecting pipe to pipe or components is necessary so as to get the entire system working.

The Square Floor Flange can work in many situations but they are best suited for small diameter pipes. They are not for large diameter pipes. The Ms Square Flange is also not suitable to work under a high torque environment.

The Steel Square Flange can be assembled by following the below four easy steps:

  • The surface should be free from contamination and scratches. Once that is ensured, lubricant system fluid can be applied on each of the O-ring parts.
  • Now the Square Header Flange is placed to the right position and the bolts are fixed through the bolt holes.
  • The flange should be hand tighten with bolts and nuts.
  • A wrench can be used for optimizing the tightness.
Looking to switch suppliers? Obtain quotes for duplex steel square header flanges and compare them it your current supplier’s revised cost

The rust and corrosion from Square Header Flange can be removed with the help of rust removing fluids.

Select certified alloy steel square galvanized flange suppliers in the middle east and Asia to minimize quality and delivery time risks.

The benefit of Jis Square Flange is that:

  • It helps to complete hydraulic lines for a seamless flow
  • It shows good strength
  • It is well-suited for small diameter pipes

The disadvantage of Jis 280k Square Flange is that they are not suitable for large diameter pipes and environments that involve high torque.