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ANSI B16.5 / ASME B16.47 Square Flange stockist


Stockholder of Square Flanges, ASME B16.5 / ANSI B16.47 Square Flange, We are offering competitive prices on DIN Square Flange, Series A & B Square Flange, MSS Square Flange


SS Square Flanges, Alloy Steel Square Flanges, Nickel Alloy 200 Square Flanges, Carbon Steel Square Flanges, Inconel Square Flanges, Hastelloy Square Flanges, Copper Nickel Square Flanges, Duplex & Super Duplex Square Flanges, Alloy 20 Square Flanges



Square Flanges stockist
Square Flanges

Cromwell Distribution is a Dominant and Expert Stockist of high quality ASME/ANSI/DIN industrial Square flanges . We offer immediate delivery programs for standard size of carbon steel Square flanges and stainless steel Square flanges. Square Square flanges in special stainless steel grades, nickel alloy and alloy steel can be supplied with just in time programs.

Commonly referred as blanking flanges, Square pipe flanges are widely used in high pressure applications. Square flanges are generally used to seal the end of a piping system to prevent flow of liquids or gases. The use of Square flanges allows ease of access to a piping system once it has been closed.

Our Square flanges are available with raised or RTJ faces and also with female threads. Square flanges can be supplied with or without hub as per the customer requirements. We offer Square Square flanges at our facility to companies in various industries including shipbuilding, power generation, petrochemical plants, oil refineries, waste water treatment plants, paper mills, pharmaceutical plants and turnkey projects among others.


What is Square Flange ?

Square Flange made in accordance to JIS B2291 standard is a connecting piece that links JIS (Japanese Industrial Standards) nominal bore size pipes together and has a working pressure of up to 210kgf/cm2. This is equivalent to 210 Bar, or 21MPa. They are usually used in high-pressure systems such as hydraulic and steam lines for up to 3,000 PSI working pressure. There 3 types of Square flanges i.e. SHAB, SSAB, LSA.


Square Flanges Specification


Square Flanges, BL Forged Flanges Production Range

Size 1/2″ (15 NB) to 48″ (1200NB)
Standards ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Pressure Ratings Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.
Carbon Steel Square Flanges ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Square Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8
Stainless Steel Square Flanges ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L
Alloy Steel Square Flanges: ASTM A182 F1, F5, F9, F11, F22, F91
Special Alloy Square Flanges Duplex, Super Duplex, Nickel Alloys
Flange Face Type Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Coating/Surface Treatment Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Value Added Services CNC Machining, Customised Flanges

Square Flange – Standards

ASME: ANSI B16.5, ANSI B16.47, ANSI B16.36, ANSI B16.48, BS 4504, EN1092, UNI 2277/2278, DIN, JIS, SABS1123, GOST-12820

DIN: DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673

EN: EN10253-1, EN10253-2


Square Flange Materials Grades

Materials : Standard, Grades
Stainless Steel Square Flanges : ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L
Carbon Steel Square Flanges : ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52,
F60, F65, F70
Alloy Steel Square Flanges : ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
Duplex Steel Square Flanges : ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61
6% Moly / Super Duplex Square Flanges : ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61
Low Temperature Steel Square Flanges : ASTM A350 LF2, LF3, LF6
High Yield Square Flanges : ASTM A694 F42, F52, F60, F65, F70
Nickel Alloys Square Flanges : ASTM SB564, SB160, SB472, SB162 – Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020)
Copper Alloys Square Flanges : ASTM SB 61 , SB62 , SB151 , SB152 – UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200
Alloys Square Flanges : ALLOY 20, ALLOY C, ALLOY C276, ALLOY B2
Other Grade of Square Flanges : Bronze, Brass, Cupro Nickel, Titanium, Inconel, Monel, Hastelloy


ASME B16.5 Square Flange Dimensions


SHA Square Flanges SHB Square Flanges
  • » Impa Code: 734801 15A SHA Square Flange
  • » Impa Code: 734802 20A SHA Square Flange
  • » Impa Code: 734803 25A SHA Square Flange
  • » Impa Code: 734804 32A SHA Square Flange
  • » Impa Code: 734805 40A SHA Square Flange
  • » Impa Code: 734806 50A SHA Square Flange
  • » Impa Code: 734807 65A SHA Square Flange
  • » Impa Code: 734808 80A SHA Square Flange
  • » Impa Code: 734811 15A SHB Square Flange
  • » Impa Code: 734812 20A SHB Square Flange
  • » Impa Code: 734813 25A SHB Square Flange
  • » Impa Code: 734814 32A SHB Square Flange
  • » Impa Code: 734815 40A SHB Square Flange
  • » Impa Code: 734816 50A SHB Square Flange
  • » Impa Code: 734817 65A SHB Square Flange
  • » Impa Code: 734818 80A SHB Square Flange
SSA Square Flanges SSB Square Flanges
  • » Impa Code: 734821 15A SSA Square Flange
  • » Impa Code: 734822 20A SSA Square Flange
  • » Impa Code: 734823 25A SSA Square Flange
  • » Impa Code: 734824 32A SSA Square Flange
  • » Impa Code: 734825 40A SSA Square Flange
  • » Impa Code: 734826 50A SSA Square Flange
  • » Impa Code: 734827 65A SSA Square Flange
  • » Impa Code: 734828 80A SSA Square Flange
  • » Impa Code: 734831 15A SSB Square Flange
  • » Impa Code: 734832 20A SSB Square Flange
  • » Impa Code: 734833 25A SSB Square Flange
  • » Impa Code: 734834 32A SSB Square Flange
  • » Impa Code: 734835 40A SSB Square Flange
  • » Impa Code: 734836 50A SSB Square Flange
  • » Impa Code: 734837 65A SSB Square Flange
  • » Impa Code: 734838 80A SSB Square Flange

ASME B16.5 Standard Square Flange Sizes

  • » 150 Square Flange : 8 Holes Ø 10
  • » 200 Square Flange: 12 Holes Ø 12
  • » 250 Square Flange: 12 Holes Ø 12
  • » 300 Square Flange: 12 Holes Ø 14
  • » 400 Square Flange: 12 Holes Ø 14
  • » 500 Square Flange: 16 Holes Ø 14
  • » 600 Square Flange: 16 Holes Ø 18
  • » 700 Square Flange: 20 Holes Ø 18
  • » 800 Square Flange: 20 Holes Ø 18

Square Flanges - Marking & Packing

Products are packaged to ensure that there is no damage during transit. packaging is done in wooden cases. All Square Flanges are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products.


Square Flanges - Value Added Services


  • Hot Dipped Galvanizing
  • Epoxy & FBE Coating
  • Electro Polish

Square Flanges - Quality Assurance

At Cromwell Distribution, all flanges are subject to strict inspection at each stage of the production process, from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality conformity of products.


Contact Cromwell Distribution for best offer of Square Flanges
Call: (361) 510-2964
Emailsales@cromwelldistribution.com