| Flanges Types | Slip On, Weld Neck, Long Weld Neck, Threaded, Blind, Companion, Lap Joint |
|---|---|
| Class | 150 Lbs, 160, 300 Lbs, 600 Lbs, 900 Lbs, 1500 Lbs, 2500 Lbs Asa 150, Asa 300, Pn 6, 10, 16, 25, 40, 64, 100 |
| Size | 1/2″ (15 Nb), 48″ (1200nb) Dn10~dn5000 |
| Type | Raised Face (rf), Small Tongue, Flat Face (ff), Groove, Ring Type Joint (rtj), Lap Joint Face (ljf), Large Male Female (lmf), Small Male Female (smf), Large Tongue & Groove |
Aluminium Flanges manufactured in India for marine aerospace chemical processing and lightweight industrial piping applications
Sagar Steel Corporation is a reputable Aluminium Flanges Manufacturer in India which manufactures high quality aluminium flanges to be used in piping and structural systems which demand lightweight construction, good corrosion resistance and reliable mechanical performance. Aluminium flanges have extensive application across industries like chemical processing, marine, aerospace, food and beverage, HVAC, power generation as well as general engineering where weight saving and corrosion resistance are critical design factors.
Being a reputable manufacturer and distributor on an international B2B platform makes us certain that all aluminium flanges are designed in compliance with accepted international standards among which are ASTM, ASME, ANSI, DIN, and EN. We have a range of sizes, pressure classes, and facing types that can be used to facilitate secure and leak free connection in low to medium pressure piping systems. High quality inspection, dimensional check, and material tests of each product are performed to guarantee uniformity of quality, a smooth finish of surfaces, and durability of service.
Aluminium Flanges – Material & Grade Table
| Material | Grade / Specification | UNS No. | Key Properties | Applicable Standards |
|---|---|---|---|---|
| Aluminium | AA 6061 / 6061-T6 | A96061 | High strength, good machinability | ASTM B247 / ASME B16.5 |
| Aluminium | AA 6082 | A96082 | Excellent corrosion resistance, high strength | ASTM B247 |
| Aluminium | AA 5052 | A95052 | Good corrosion resistance, formability | ASTM B247 |
| Aluminium | AA 5083 | A95083 | Marine-grade corrosion resistance | ASTM B247 |
| Aluminium | AA 7075 | A97075 | Very high strength, aerospace applications | ASTM B247 |
Aluminium Flanges – Sizes & Availability Table
| Flange Type | Nominal Size (NPS) | Pressure Rating (Class / PN) | Minimum Order Quantity | Available Cities |
|---|---|---|---|---|
| Weld Neck Flange | ½" – 24" | Class 150–600 / PN10–PN40 | 200 Pcs | Mumbai, Pune |
| Slip-On Flange | ½" – 24" | Class 150–300 / PN10–PN25 | 200 Pcs | Chennai, Ahmedabad |
| Blind Flange | ½" – 24" | Class 150–600 / PN10–PN40 | 200 Pcs | Delhi, Kolkata |
| Threaded Flange | ½" – 12" | Class 150–300 / PN10–PN25 | 200 Pcs | Hyderabad, Bangalore |
| Lap Joint Flange | ½" – 24" | Class 150–300 / PN10–PN25 | 200 Pcs | Surat, Coimbatore |
- Mechanical strength Lightweight material.
- Good anti-corrosion against atmospheric and mild corrosion.
- Excellent thermal and electrical pluggability.
- Simple machinability and production of customized parts.
- High maintenance life and minimal maintenance needs.
Type of Sub-products

Slip On Aluminium Flanges Slip On Aluminium Flanges
These flanges slide over the pipe and are then welded on both the inside and outside, providing a strong connection. Ideal for low pressure applications.

Weld Neck Aluminium Flanges Weld Neck Aluminium Flanges
Designed with a long tapered hub, they are welded to the pipe, ensuring high strength and resistance to stress. Used in high pressure systems.

Threaded Aluminium Flanges Threaded Aluminium Flanges
These flanges have internal threads and are screwed onto pipes without welding, suitable for low pressure and non critical applications.
