Welding Flanges
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Welding Flanges
Welding Flanges
Welding Flanges covers any flange style that is joined to a pipe through a welding process rather than threads or a loose fit. Depending on the flange design, the joint may be made with a full-penetration butt weld or a fillet weld, each suited to different pressure, temperature and maintenance requirements.
At Royal Steel India, we manufacture and supply premium-quality Welding Flanges in a wide range of sizes, pressure classes, materials, and international standards, with bevelled edges machined for correct weld preparation and consistent joint quality.
Choosing the right welding method matters as much as the flange itself. Weld neck and long weld neck flanges use a butt weld, matching the pipe wall thickness for maximum strength, while slip-on and socket weld flanges use a fillet weld on one or both sides, which is faster to complete but carries a lower fatigue rating.
Whichever method is used, correct edge preparation, welder qualification and post-weld inspection are essential to achieving a leak-proof, code-compliant joint.
Key Features
- Butt-weld and fillet-weld preparation available
- Bevelled edges machined for proper weld penetration
- Consistent weld quality across every batch
- Suitable for high-pressure and high-temperature services
- Compatible with radiography, dye penetrant and ultrasonic weld testing
- Reduced risk of leakage at the welded joint
- Available in multiple sizes and pressure ratings
- Long service life with minimal maintenance
Available Grades
We manufacture Welding Flanges in various materials, including:
Available Standards
- ASME B16.5
- ASME B16.47 Series A & B
- ANSI
- DIN
- EN
- BS
- JIS
- MSS SP-44
Pressure Ratings
- Class 150
- Class 300
- Class 600
- Class 900
- Class 1500
- Class 2500
- PN6 to PN400
Applications
- Oil & Gas Industry
- Petrochemical Plants
- Chemical Processing
- Power Generation
- Refineries
- Water Treatment Plants
- Marine Industry
- Offshore Platforms
- Pharmaceutical Industry
- Industrial Process Pipelines
Why Choose Royal Steel India?
Royal Steel India is a trusted manufacturer, supplier, and exporter of premium-quality Welding Flanges. Our products are manufactured using premium raw materials and precision machining, with edges prepared to the correct bevel for a clean, code-compliant weld. We are committed to delivering products that meet international quality standards with competitive pricing and on-time delivery.
Frequently Asked Questions
What are Welding Flanges?
Welding Flanges are pipe flanges that are joined to the pipe by a welding process, either butt welding or fillet welding, depending on the flange type and application.
What is the difference between butt welding and fillet welding a flange?
Butt welding joins the flange and pipe edge-to-edge in a single continuous weld, used for weld neck flanges, while fillet welding joins the flange around the outside of the pipe, used for slip-on and socket weld flanges.
How is the quality of a welded flange joint checked?
Weld quality is verified using methods such as radiography testing, dye penetrant testing, ultrasonic testing and visual inspection, depending on the service and standard specified.
What materials can be used for Welding Flanges?
Welding Flanges are available in Stainless Steel, Carbon Steel, Alloy Steel, Duplex Steel, Nickel Alloys, Inconel, Monel, Hastelloy, Titanium, and other special alloys.
Need a Quote on Welding Flanges?
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