M Metal Tubes India Pvt Ltd is a leading manufacturer and global supplier of premium Weld Neck Flanges (WNRF) designed for high-pressure and high-temperature applications. With over 40 years of manufacturing excellence and ISO 9001:2008 certification, we deliver top-quality flanges that ensure strength, durability, and leak-proof performance in demanding industrial conditions.

What Are Weld Neck Flanges?

Weld Neck Flanges, also known as WNRF (Weld Neck Raised Face) Flanges, feature a long tapered hub that is welded to a pipe. This design ensures a strong, permanent connection and smooth fluid transition with minimal pressure drop and erosion. These flanges are ideal for high-stress environments and are commonly used in critical systems involving high pressure, extreme temperatures, or hazardous media.

Materials We Offer

• Stainless Steel Weld Neck Flanges (SS 304, SS 316, etc.)
• Carbon Steel Weld Neck Flanges
• Alloy Steel Weld Neck Flanges
• Duplex & Super Duplex Steel Weld Neck Flanges
• Copper Nickel Weld Neck Flanges (Cu-Ni 90/10, 70/30)
• Hastelloy, Incoloy, Inconel, Monel WNRF Flanges

Key Features & Benefits

• High mechanical strength and long-term structural integrity
• Leak-proof joint suitable for extreme pressure and temperature
• Radiographic inspection of welds possible for added assurance
• Excellent stress distribution and fatigue resistance
• Ideal for sub-zero and fluctuating temperature environments

Standards & Specifications

• Standards: ANSI B16.5, ANSI B16.47
• Sizes: ½” to 60”
• Pressure Ratings: Class 150 to Class 2500
• Face Types: Raised Face (RF), Ring Type Joint (RTJ)

Applications of Weld Neck Flanges

Our WNRF flanges are widely used across critical industries where performance and longevity are essential:

• Oil & Gas Refineries
• Power Generation & Thermal Plants
• Petrochemical & Chemical Processing
• Pharmaceutical & Food Processing Units
• Marine, Shipbuilding & Subsea Pipelines

Why Choose M Metal Tubes India Pvt Ltd?

With a legacy of more than four decades, M Metal Tubes India Pvt Ltd is a trusted name for Weld Neck Flanges in India and overseas. Our flanges are manufactured using modern machining technology, tested under stringent standards, and exported worldwide with a focus on timely delivery and consistent quality. We support project-specific customization and documentation to meet client and regulatory needs.

Need Custom Weld Neck Flanges?

We offer custom-made Weld Neck Flanges for special size, pressure, or material requirements. Contact us today for technical support, detailed specifications, or bulk order pricing. Our sales team will assist you with prompt quotes and reliable global logistics.