Flanges (Slip-On, Weld Neck, Blind & Spectacle)

Flanges can be supplied in the following materials and grades, depending on specifications and availability:

• Stainless Steel: SS 304, SS 316, SS 321, SS 310
• Carbon and Mild Steel: MS
• Duplex Stainless Steel: Duplex and Super Duplex
• Special Alloys: Monel and Inconel

A Slip-On Flange slides over the pipe and is generally attached by fillet welding. It is commonly used in industrial piping systems where the applicable design code permits its use.

A Weld Neck Flange features a tapered hub and is butt-welded to the pipe. It is commonly selected for piping systems requiring good stress distribution and reliable connections under demanding operating conditions.

A Blind Flange is a solid flange used to close the end of a pipe, valve, or pressure vessel opening. It allows the line to be isolated and can be removed when access is required.

SS 304 is widely used for general industrial applications and offers good corrosion resistance. SS 316 contains molybdenum, which generally improves resistance to chloride-related corrosion, making it suitable for many chemical, marine, and process applications.

Duplex and Super Duplex stainless steel flanges offer high strength and enhanced corrosion resistance. They are commonly used in offshore, marine, oil and gas, desalination, and chemical processing applications. Super Duplex grades generally provide greater corrosion resistance than standard Duplex grades.

Monel and Inconel are nickel-based alloy families used in demanding environments.

• Monel: Often selected for marine service and certain corrosive chemical environments.
• Inconel: Often selected for high-temperature service, oxidation resistance, and demanding chemical or industrial conditions.

The appropriate alloy depends on the specific grade and operating environment.

SS 321 is a titanium-stabilized stainless steel grade commonly used where resistance to intergranular corrosion after exposure to elevated temperatures is important. SS 310 offers good high-temperature oxidation resistance and is used in selected furnace, heat-treatment, and thermal processing applications.

Depending on the product and customer requirements, flanges may be supplied to standards such as ASME B16.5, ASME B16.47, EN 1092-1, and other applicable specifications. Confirm the required standard, pressure class, dimensions, and material grade before ordering.

Availability depends on the flange type, material, and standard. Common ASME pressure classes include 150, 300, 600, 900, 1500, and 2500. Sizes and ratings must be verified against the applicable standard and design conditions.

Material Test Certificates (MTCs), including chemical composition and mechanical test results, may be supplied as agreed in the order. Inspection documentation and traceability requirements should be confirmed before purchase.

Ronak Overseas serves the Indian market and international customers for stainless steel and industrial piping products. Export packing, documentation, and delivery arrangements can be discussed according to the destination and order requirements.

Please provide the flange type, material grade, nominal pipe size (NPS/DN), pressure class, applicable standard, quantity, and required certificates.

Contact Ronak Overseas:

• Website: www.ronakoverseas.in
• Email: [email protected]