Incoloy Flanges Manufacturer

Midland Alloys Inc. is a trusted Indian manufacturer and global supplier of Incoloy Flanges, serving diverse industrial needs with precision-engineered solutions. Incoloy Flanges are specialized pipe fittings made from nickel-iron-chromium-based superalloys known for their exceptional corrosion and heat resistance. Incoloy 800, 800H, 800HT, 825 (UNS N08825), and 925 are common grades that are appropriate for different chemical exposures, pressures and temperatures. These grades are often referred to PN16 Incoloy Alloy Flanges offer secure and leak-proof connections in harsh settings like chemical processing facilities, offshore platforms and high-temperature pipelines. They follow stringent international standards, such as ASME SB564, DIN EN1092, and BS4504, and are produced in sizes from DN10 to DN1500. Incoloy has a balanced chemical content that includes nickel, iron, chromium and stabilizing compounds like molybdenum, titanium, and copper. Its high tensile strength yielding good elongation and balanced mechanical properties provides a wide temperature range.

Benefits of Incoloy Alloy Flanges

Long-term dependability, and performance in harsh conditions are provided by PN16 Incoloy Alloy Flanges. These flanges are perfect for critical applications due to their resistance to mechanical stress, corrosive media and high temperatures.

Outstanding resistance to environments that are reducing and oxidizing
High retention of strength at high temperatures up to 1000°C
Excellent resistance to stress corrosion cracking and pitting
It minimizes the maintenance and replacement due to its durability.
Excellent formability and weldability for specialized installation requirements
Suitable for various pipe materials and pressure classes
Maintains its mechanical integrity in acidic and chloride-rich environments.
Are suitable for cryogenic to high heat applications without deformation

Difference Between Incoloy Flanges vs Inconel Flanges

Although both Incoloy and Inconel flanges are nickel-based alloys, their compositions and application capabilities differ. Incoloy Flanges, especially grade 825, are designed for moderate to high-temperature applications where corrosion resistance is critical. Incoloy is more affordable for application in extreme conditions as it has more iron and less nickel than Inconel. On the other hand, Inconel flanges especially those in grades 625 and 718 offer exceptional oxidation resistance and high-temperature strength, which makes them common in the thermal processing and aerospace industries. Incoloy performs better in environments containing sulfuric and phosphoric acids, while Inconel is preferred in high-stress, high-heat applications involving oxidizing agents.

Incoloy Flanges Size and Specification

Types of Incoloy Flanges

Manufacturing Types

SORF (Slip-On Raised Face)

Slides over the pipe and gets welded for easy installation in low-pressure systems.
BLRF (Blind Raised Face)

Closes off pipe ends; used for testing or sealing flow in a system.
SWRF (Socket Weld Raised Face)

Pipe fits into a recessed area and is welded around the edge. Ideal for small-bore, high-pressure lines.
WNRF (Weld Neck Raised Face)

Has a long, tapered hub and welds to the pipe for strong, leak-proof joints under high pressure.

Face Forms

Raised Face (RF)

The most common type has a raised surface that improves gasket sealing in medium to high pressure.
Ring Type Joint (RTJ)

Uses a metal ring for sealing and works well in high-pressure, high-temperature services.
Flat Face (FF)

Flat surface flange used with cast iron or low-pressure piping where full face gasket is needed.
Lap-Joint Face (LJF)

Used with stub ends and are easy to align and install. Good for systems that need frequent dismantling.

Contact Midland Alloys Inc. for Your Incoloy Flanges Needs

Contact us today to discuss how Incoloy Flanges can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.

Incoloy Flanges Grades We Offer

Incoloy Flanges

Incoloy 800/800H/800HT Flanges

Incoloy 825 Flanges

Weight Chart

Size Chart

Weight Chart

Size Chart

Manufacturing Process of Incoloy Flanges

Plate

Shear

Press

Inspection

Lathe

Drilling

Cleaning

Flange

Inspection

Analytic

Marking

Packing & Shipping

Applications of Incoloy Flanges

Incoloy Alloy Flanges are used across a wide range of industries due to their ability to resist corrosion, heat, and pressure. In the chemical and petrochemical sectors, they are ideal for handling aggressive acids and salts. In oil and gas refineries, they are employed in sour gas service and subsea systems. Power generation plants use Incoloy flanges in heat exchangers, superheaters, and steam lines. These tubes are essential for sterile, corrosion resistant processing in the pharmaceutical industry. They are also used in marine engineering, pulp and paper and desalination plants, where resistance to chlorides is crucial. These flanges are appropriate for significant pipeline connections in various international projects as they satisfy significant standards such as DIN EN1092 and ASME SB564 UNS N08825.

Offshore Industry

Nuclear Industries

Refineries

Ship Building

Aerospace

Pharmaceutical

Why Choose ASME SB564 UNS N08825 Incoloy Flanges from Midland Alloys Inc.

Midland Alloys Inc. is a prominent Indian producer and exporter of high-grade ASME SB564 UNS N08825 Incoloy Flanges, providing precise components for challenging industrial systems. Being an ISO certified company, we provide complete adherence to international flange specifications like DIN EN1092, BS4504 and pressure levels like PN16. We offer customized solutions with cut-to-length, end finish, customized schedules, and surface treatment. Our in-house testing entails dimensional inspection, chemical analysis, and validation of mechanical properties, backed by mill test certificates (MTC) and third-party inspections when required. Having a global presence in the Gulf region, Europe, Africa, and Southeast Asia, we serve customers with on-time delivery; small-to-bulk orders are managed by our team with project-specific packaging. Our focus on quality assurance, documentation, and client satisfaction enables us to build lasting partnerships with buyers worldwide. All flanges are marked as per ASTM/ASME standards, ensuring full traceability and material reliability.

FAQs

What is the cost of an Incoloy flange per kg?

The cost of Incoloy flange per kg is different for different grades, size, and specifications.

How to weld INCOLOY?

INCOLOY is usually welded with GTAW (TIG) or SMAW (Stick) processes. SMAW (Stick) or GTAW (TIG) processes are usually used to weld incoloy. Filler metals made of the same alloy were used to maintain mechanical properties, by minimizing excessive heat input and ensuring clean surfaces.

Is PTFE weldable?

PTFE (Polytetrafluoroethylene) cannot be welded by conventional means, as it possesses high chemical resistance, and low surface energy. Specialized thermal, or mechanical joining methods are used instead.

Products Categories

ISO Certificate

NPS (Nominal Pipe Size)	SORF (Slip-On)	SW (Socket Weld)	SO (Socket — alternate)	LJ (Lap Joint)	BL (Blind)	WN (Weld Neck)
½″	1	1	2	1	2	2
¾″	2	2	2	2	2	2
1″	2	2	2	2	2	3
1¼″	3	3	3	3	3	3
1½″	3	3	3	3	4	4
2″	5	5	5	5	5	6
2½″	8	8	8	8	7	10
3″	9	9	9	9	9	11.5
3½″	11	12	11	11	13	12
4″	13	13	13	13	17	16.5
5″	15	15	15	15	20	21
6″	19	19	19	19	27	26
8″	30	30	30	30	47	42
10″	43	43	43	43	70	54
12″	64	64	64	64	123	88
14″	90	90	90	105	140	114
16″	106	98	98	140	180	140
18″	130	130	130	160	220	165
20″	165	165	165	195	285	197
22″	185	185	185	245	355	225
24″	220	220	220	275	430	268

Nominal Size (in)	Class/Rating	Flange Dia (in)	Bolt Circle Dia (in)	# of Bolts	Bolt Hole Dia (in)
1/2″	Class 300	3-3/4	2-5/8	4	0.62
3/4″	Class 300	4-5/8	3-1/4	4	0.75
1″	Class 300	4-7/8	3-1/2	4	0.75
1-1/4″	Class 300	5-1/4	3-7/8	4	0.75
1-1/2″	Class 300	6-1/8	4-1/2	4	0.88
2″	Class 300	6-1/2	5	8	0.75
2-1/2″	Class 300	7-1/2	5-7/8	8	0.88
3″	Class 300	8-1/4	6-5/8	8	0.88
4″	Class 300	10	7-7/8	8	0.88
5″	Class 300	11	9-1/4	8	0.88
6″	Class 300	12-1/2	10-5/8	12	0.88
8″	Class 300	15	13	12	1.00
10″	Class 300	17-1/2	15-1/4	16	1.12
12″	Class 300	20-1/2	17-3/4	16	1.25
16″	Class 300	25-1/2	22-1/2	20	1.38
24″	Class 300	36	32	24	1.62