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Square Flanges are widely used in piping systems where a compact and secure connection is required. They are designed to provide a reliable joint in applications that demand high strength and durability. These flanges are suitable for both low-pressure and high-pressure services, especially in systems operating at or near atmospheric pressure. They are commonly used in industries where alloy steel is essential for power and strength.
Manufactured in a variety of materials such as stainless steel, carbon steel, duplex and super duplex steel, Monel, Inconel, Hastelloy, titanium, and other high nickel alloys, Square Flanges meet diverse industrial requirements. They are produced according to international standards like ANSI B16.5, ASME B16.47, DIN 2527, and other specifications, ensuring global compatibility and high performance. These flanges are also available in pressure classes like Class 150, 300, 600, 900, 1500, and 2500 LBS, offering versatility for different operating conditions.
One of the major advantages of Square Flanges is that they can be assembled without welding, making installation and maintenance easier. However, they are not recommended for use in extreme temperatures, cyclic loading, or bending stress conditions where leakage may occur through threaded connections. Despite this, they remain a preferred choice for many superior applications that demand reliable and strong flange connections.
These flanges are also supplied in customized sizes and shapes as per client requirements, ensuring a perfect fit for different piping systems. They are widely used in industries such as oil and gas, petrochemicals, power generation, marine, and chemical processing. Additionally, Square Flanges are exported to several countries including Qatar, Bahrain, Saudi Arabia, Indonesia, the United States, Singapore, Malaysia, Turkey, UAE, Russia, Ukraine, South Africa, and Australia, highlighting their global demand.
Specialized types of Square Flanges include Alloy 20 Square Flanges, Class 150 LBS Square Flanges, DIN 2527 Square Flanges, and Hastelloy Square Flanges, each designed to meet specific industry needs. With precision engineering, high-quality materials, and strict adherence to standards, these flanges ensure durability, leak-proof performance, and long service life in demanding applications.
Square Flanges
ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L
ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
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).
UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, UNS No. C 70600 (Cu -Ni- 90/10), C 71500 (Cu -Ni- 70/30)
Square Flanges are manufactured in a wide size range from 1/2″ (15 NB) to 48″ (1200 NB), making them suitable for various piping systems across different industries. They are designed to meet diverse operational needs, from small-scale applications to large industrial projects requiring high-strength connections.
These flanges are produced in accordance with international standards such as ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, and AWWA, and can also be customized as per project-specific drawings. They are available in multiple pressure classes including 150, 300, 600, 900, 1500, and 2500 LBS, along with DIN standard ratings ND-6, 10, 16, 25, and 40, ensuring compatibility with various piping systems.
Square Flanges are available in a size range from 1/2″ (15 NB) to 48″ (1200 NB), making them suitable for both small and large piping systems. They are manufactured in compliance with ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, and AWWA standards, with options for custom drawings as per project requirements. These flanges are designed for various pressure classes such as 150, 300, 600, 900, 1500, and 2500 LBS, along with DIN standard ratings ND-6, 10, 16, 25, and 40, ensuring high reliability in diverse operating conditions.
To meet different sealing requirements, Square Flanges are offered in Raised Face (RF) and Ring Type Joint (RTJ) configurations. They also comply with British Standards like BS4504, BS1560, and BS10, ensuring global acceptance and compatibility. With precise engineering and adherence to international specifications, these flanges provide durable and leak-proof connections for industrial piping systems.
As your one-stop manufacturing partner, Sunrise Industries maintains a complete inventory of ready-to-sell raw materials alongside custom parts fabrication and full engineering services. From prototyping to production, we provide everything at a single location—serving all industrial sectors and transforming manufacturing value chains.
