Manufacturers of ASME / ANSI B16.5, B16.47 Square Flange
A Square Flange is a type of flange that features a square-shaped design, as opposed to the more common round flange. It is primarily used in applications where a strong, stable connection is required for joining pipes, valves, and other equipment. Square flanges are often used in industrial settings, including construction, manufacturing, and high-pressure systems, where specific alignment and bolting are crucial. The design of the square flange allows for secure and uniform distribution of pressure across the joint. Square flanges can be customized to meet various specifications, including size, material grade, and pressure rating, making them versatile and reliable for a wide range of applications.
Ample Alloys is your trusted partner for ANSI B16.5 Square Flanges, offering top-quality products that meet the highest industry standards. Our Square flanges are manufactured using premium materials like carbon steel, stainless steel, and alloy steels to ensure durability, corrosion resistance, and reliability. We provide customization to meet specific project requirements and ensure precision engineering for flawless performance. With extensive industry experience, competitive pricing, and on-time delivery, we are committed to delivering exceptional products and services. Trust Ample Alloys for high-quality ANSI B16.5 High Hub Blind Flanges tailored to your needs.
DIN 3901/ ISO 8435 Square Flange, ISO 6164 Square Flange, JIS 210k Square Flange, JIS B2291 Square Flange, SHAB / SSAB / LSA Square Flanges, Stainless Steel, Carbon Steel Square Flange, Square Flange for Piping, High Pressure, Square Flange Joint
ASME Square Flange
Size Range
15mm ( 1/2" NPS ) up to 600mm ( 24" NPS ), For 2500# in sizes from NPS 1/2 to NPS 12
Flange Face Type
FF—Flat Face, RF—Raised Face, FM—Female Face, M—Male Face, T—Tongue Face, G—Groove Face, RJ—Ring Joint.
Stainless Steel
ASTM A182 F 304, 304L, 304H, 316, 316L, 316H, 317, 317L, 321, 321H, 310, 310S, 347, 904L, etc.
Standards / Dimension
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN
Carbon Steel
ASTM A105/A105N (SA105N), LTCS A350 LF2, A694
Alloy Steel
ASTM A182 / SA182 - F1 / F5 / F9 / F11 / F12 / F22 / F91
Pressure Class
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64.
Duplex & Super Duplex
ASTM A182 / ASME SA182 - S31803, S32205, 2205, S32750, S32760, S32950, 2507.
MTC
EN 10204 3.2 and EN 10204 3.1, Test Certificates certifying NACE MR0175, NACE MR0103
Square Flanges Dimensions
There are three types of Square Flanges under this standard: SHAB – Used with hexagon hex bolts, larger flange body size (Figure 1), SSAB – Used with socket cap screw, smaller flange body size than SHAB (Figure2), LSA – Oring side only, L shaped internal flow (Figure 3).
| SHA Square Flanges | SHB Square Flanges |
Impa Code: 734801 15A SHA Square Flange |
Impa Code: 734811 15A SHB Square Flange |
| SSA Square Flanges | SSB Square Flanges |
Impa Code: 734821 15A SSA Square Flange |
Impa Code: 734831 15A SSB Square Flange |
High-Quality Square Flange Standards
High-quality square flanges are manufactured according to strict industry standards to ensure durability, performance, and safety.
- ASME/ANSI Standards (American):
- ASME B16.5 – Pipe Flanges and Flanged Fittings (NPS 1/2" to 24").
- ASME B16.47 – Large Diameter Steel Flanges (Series A & B, NPS 26" to 60").
- ASME B16.36 – Orifice Flanges.
- ASME B16.48 – Line Blanks (Spectacle, Spade, and Spacer Flanges).
- ANSI B16.1 – Cast Iron Flanges and Flanged Fittings.
- ANSI B16.42 – Ductile Iron Pipe Flanges and Flanged Fittings.
- ISO Standards (International)
- ISO 7005-1 – Steel Flanges for General Applications.
- ISO 7005-2 – Cast Iron Flanges.
- ISO 7005-3 – Copper Alloy Flanges.
- EN Standards (European)
- EN 1092-1 – Steel Flanges.
- EN 1092-2 – Cast Iron Flanges.
- EN 1092-3 – Copper Alloy Flanges.
- EN 1092-4 – Aluminium Alloy Flanges.
- DIN Standards (German)
- DIN 2527 – Blind Flanges.
- DIN 2576 – Slip-On Flanges (PN 10).
- DIN 2633 – Weld Neck Flanges (PN 16).
- DIN 2634 – Weld Neck Flanges (PN 25).
- DIN 2635 – Weld Neck Flanges (PN 40).
- JIS Standards (Japanese)
- JIS B2220 – Steel Pipe Flanges.
- GOST Standards (Russian)
- GOST 12820 – Flat Flanges for Steel Pipe Joints.
- GOST 12821 – Steel Welded Flanges for High-Pressure Applications.
- GOST 33259 – Flange Connections for Industrial Equipment and Pipelines.
- BS Standards (British)
- BS 4504 – Circular Flanges for Pipes, Valves, and Fittings.
- BS 10 – Specification for Flanges and Bolting.
- API Standards (Oil & Gas)
- API 6A – Wellhead and Christmas Tree Equipment Flanges.
- API 605 – Large-Diameter Carbon Steel Flanges (merged into ASME B16.47 Series B).
- AWWA Standards (Waterworks)
- AWWA C207 – Steel Ring Flanges for Waterworks Service.
- MSS Standards (Manufacturer's Standardization Society)
- MSS SP-44 – Steel Pipe Flanges (merged into ASME B16.47 Series A).
- MSS SP-51 – Flanges for Glass-Lined Equipment.
- Material-Specific Standards (ASTM)
- ASTM A105 – Carbon Steel Forged Flanges.
- ASTM A182 – Alloy and Stainless Steel Forged Flanges.
- ASTM A350 – Carbon and Low-Alloy Steel Flanges for Low-Temperature Service.
- ASTM A694 – High-Strength Carbon and Alloy Steel Flanges for High-Pressure Applications.
- Other Regional and Specialized Standards
- KS B1511 – Korean Standard Flanges.
- NF E29-206 – French Standard Flanges.
- SANS 1123 – South African Standard for Steel Flanges.
Why Ample Alloys For Industrial Square Flanges!
Choose Ample Alloys for industrial square flanges and enjoy premium quality, reliable performance, and excellent customer service.
Top-Quality Materials
We use premium materials like carbon steel, stainless steel, and alloy steels to ensure durability and reliability.
Customization
Our square flanges are customizable in size, pressure rating, and material to meet your project’s specific needs.
Proven Reliability
With years of experience, we deliver square flanges that perform efficiently in industries like oil & gas, chemical processing, and power generation.
Excellent Customer Support
Our team provides expert assistance, technical support, and guidance throughout the selection process.
Square flanges are used in a wide range of industries, including oil & gas, chemical processing, water treatment, power generation, and construction, where secure connections are required for piping systems under various pressure conditions.
The dimensions of a square flange vary depending on the application and pressure rating. Common sizes include 4x4 inches, 6x6 inches, and larger, with thicknesses and pressure ratings customizable to meet project requirements.
The primary difference is the shape. Square flanges offer precise bolting and alignment, which may be required for specific industrial applications, while round flanges are more commonly used due to their ease of manufacturing and installation.
