Blind Flanges – Sunrise Industries

QMS 9001:2015 Certified

Raw to Ready All Here

+91 6264131446

info@sunrise.industries

Blind Flanges

Blind Flanges are essential components used to seal the ends of piping systems, valves, and pressure vessels. Known for their strength, they handle internal pressure and bolt loads effectively, with maximum stress concentrated at the flange center. These flanges are widely used across industries for both isolation and maintenance purposes, and are supplied with complete test certifications of both raw materials and finished products.

A comprehensive range of Blind Flanges is offered, including Stainless Steel Blind Flanges, Duplex Steel BLRF Flanges, Carbon Steel Blind Flanges, Alloy Steel Blind Flanges, Copper Nickel Blind Flanges, Monel 400, Nickel Alloy, and High Nickel Alloy Blind Plate Flanges. These flanges are manufactured in compliance with international quality and dimensional standards, making them suitable for high-performance industrial use.

Blind Flanges are available in customized sizes, thicknesses, pressure classes, and face types (RF, FF, RTJ) to meet the exact specifications of customers. Made-to-order solutions are offered for industries that demand unique configurations or critical performance standards.

Blind Flanges are manufactured in compliance with international standards, ensuring reliable performance in a wide range of industrial applications. These flanges are available in sizes ranging from ½” (15 NB) to 48″ (1200 NB) to accommodate various pipeline requirements.

They are produced as per global standards such as ANSI B16.5, ANSI B16.47 Series A & B, MSS SP-44, ASA, API-605, and AWWA. Available pressure classes include 150, 300, 600, 900, 1500, and 2500 LBS, as well as DIN standards ND-6 to ND-40.

The flanges come in multiple face types, including Flat Face (FF), Raised Face (RF), and Ring Type Joint (RTJ) to suit different sealing and installation needs.

All Blind Flanges conform to NACE MR0175 / ISO 15156, making them suitable for sour service environments. Additionally, they meet British and European standards such as BS4504, BS1560, BS10, and DIN2527 to DIN2673, ensuring versatility and global compatibility.

Blind Flanges are exported to key global markets including Qatar, Saudi Arabia, UAE, United States, Indonesia, Malaysia, Singapore, Russia, Ukraine, South Africa, and Australia. These products are trusted for their durability, dimensional accuracy, and pressure-resistance in challenging industrial environments.

Why choose Blind Flanges??

Seals Pipeline Ends – Ideal for closing pipe systems, valves, or vessel openings.
High Pressure Handling – Designed to withstand internal pressure and bolt load.
Easy Maintenance Access – Can be easily removed for cleaning or inspection.
Leak Prevention – Provides a secure seal to prevent leakage in critical systems.
Versatile Applications – Used in oil & gas, petrochemical, power, and marine industries.

Blind Flanges

Blind Flanges Manufacturing Material & Grades:-

Carbon Steel Blind 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, ASTM A350, LF2, LF3

Duplex & Super Duplex Steel Blind Flanges :

ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61, 2205 (UNS No. S31803), 2507 (UNS No. S32750)

Nickel Alloy Blind 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 Alloy Steel Blind Flanges :

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)

Leading Manufacturers of Blind Flanges & Ready Inventory of BLRF Flanges

A wide range of Blind Flanges is manufactured as per ANSI B16.5, ANSI B16.47, and other international standards. The inventory includes Stainless Steel BLRF Flanges, Stainless Steel Blind Plate Flanges, Duplex and Super Duplex Blind Flanges, Class 150 LBS BLRF Flanges, MSS SP-44 Blind Flanges, DIN-2527 Blind Flanges, and BS-4504 BLRF Flanges.

Also available are Carbon Steel Blind Flanges, Alloy Steel BLRF Flanges, Nickel Alloy, Hastelloy, Inconel 600, Monel 400, Titanium, and Copper Nickel BLRF Flanges in various sizes and pressure ratings. These flanges are supplied globally to markets like Saudi Arabia, Qatar, United States, Malaysia, and UAE, and meet the needs of critical industries. Alloy 20 Blind Flanges and other specialized grades are also available in custom dimensions and specifications.

We are Experts in Exporting Blind Flanges worldwide:-

We specialize in exporting Blind Flanges to over 80 countries across the globe. Our export network spans regions including the Middle East, Europe, Asia, Africa, North America, and South America.

Key export destinations include the USA, UAE, Saudi Arabia, Qatar, Germany, Malaysia, Indonesia, Russia, South Africa, Australia, and the United Kingdom. Known for quality, precision, and timely delivery, our Blind Flanges meet international standards and are trusted by clients worldwide for use in critical industrial applications.

Special Grades & Customization Options

Blind Flanges are available in special grades such as Inconel, Monel, Hastelloy, Alloy 20, Copper Nickel, Duplex, and Super Duplex, suitable for high-corrosion and high-pressure environments.

We also offer customization options in terms of size, thickness, pressure rating, flange face type (RF, FF, RTJ), and surface finish, ensuring the product meets specific project and industry requirements.

Commitment to Quality & Certifications

Blind Flanges are manufactured under strict quality control measures, using premium raw materials and advanced production techniques to ensure durability and reliability.

Each product is supplied with Mill Test Certificates (MTC) as per EN 10204 3.1/3.2 and complies with international standards such as ASTM, ASME, ANSI, DIN, BS, and NACE MR0175/ISO 15156, ensuring consistent performance in critical applications.