Expanding Flange Manufacturer

Best Butt Weld Fittings Manufacturer in India since 1971.

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Expanding Flanges Manufacturers, Supplier and Exporter in India

Teshi Group is a dynamic group established more than a decade ago to meet the growing demand for Expander Flanges to ASME/ANSI B16.5 Flanges, ASME/ANSI B16.47 etc. in all materials like stainless steel, carbon steel and high nickel alloys. We manufacture, export and supply Expander Flanges that conform to national and international quality standards and production base that possesses equipment that meets international technical level and is well equipped with a whole range of advanced plasma finishing equipment.

Our expander flanges are designed for pipelines from 40 mm – 1 000 mm nominal diameter. Flanges available in custom sizes!

ISO certified & India’s leading manufacturer, supplier of Expander, We specialize in offering Stainless Steel Expander Flange which are used in various engineering applications and can be availed in various grades like ASTM A182 Stainless Steel Grade 304 Flanges, Grade 304L Flanges, Grade 304H Flanges, Grade 310 Flanges, Grade 316 Flanges, Grade 316L Flanges, Grade 316H Flanges, Grade 316Ti Flanges, Grade 317 Flanges, Grade 317L Flanges, Grade 321 Flanges, Grade 347 / 347H Flanges, Grade 904L Flanges, Slip-on Flanges, Socket Weld Flanges, Blind Flanges, Weldneck Flanges, Threaded Flanges, Lap Flanges, Long Weldneck Flanges, Spectacle Blind Flanges, Plate Flanges, Ring Flanges, Tongue and Groove Flanges, Reducing Flanges India.

Teshi Group is an ISO certified expanding flange manufacturer & distributor in India.

Dimensions of Expanding Flanges

Expanding Flanges Drawing

Standard Specification For Expanding Flange

Standard Specifications
ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
1/2" (15 NB) to 48" (1200NB)
150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636,DIN 2637, DIN 2638, DIN 2673
: BS 4504 , BS 4504, BS 1560, BS 10
PN6, PN10, PN16, PN25, PN40
Flange Face Type
Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Material & Grades of Expanding Flange

Material & Grades
Stainless Steel Expander Flange
ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L
Carbon Steel Expander Flange
ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70
Alloy Steel Expander Flange
ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
Duplex Steel Expander Flange
ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61
6% Moly / Super Duplex Expander Flange
ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61
Low Temperature Steel Expander Flange
ASTM A350 LF2, LF3, LF6
High Yield Expander Flange
ASTM A694 F42, F52, F60, F65, F70
Nickel Alloys Expander Flange
ASTM SB564, SB160, SB472, SB162 – Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020)
Copper Alloys Expander Flange
ASTM SB 61 , SB62 , SB151 , SB152 – UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200
Alloys Expander Flange
Other Grade of Expander Flange
Bronze, Brass, Cupro Nickel, Titanium, Inconel, Monel, Hastelloy

Application Of Expanding Flange

ANSI B16.5 Class 150 Expander Flanges uses in Industrial Boilers Industry
ASTM A182 Stainless Steel Expander Flanges uses in Power Plants Industry
ASME B16.47 Series A and B Expander Flanges uses in Nuclear Plants Industry
Stainless Steel Expander Flanges uses in Oil & Gas Industry
Super Duplex Steel Expander Flanges uses in Refineries Industry
Industrial Expander Flanges uses in Ship Building Industry
Super Duplex Steel Expander Flange Forged Flanges uses in Heat Exchanger Industry
Carbon Steel Industrial Expander Flanges uses in Condensers Industry
Alloy Steel Industrial Expander Flanges uses in Paper & Pulp Industry
Duplex Steel Industrial Expander Flanges uses in Marine Applications
Stainless Steel Industrial Expander Flanges uses in Nuclear Power Industry
Industrial Expander Flange / Fittings System uses in Fossil Fuel Power Plants Industry

Teshi Group Is A Leading Supplier Of Expanding Flange in India

We supply expanding flange to Agra, Ahmedabad, Ajmer, Aligarh, Allahabad, Ambattur, Amravati, Amritsar, Asansol, Aurangabad, Bangalore, Bareilly, Belgaum, Bhavnagar, Bhilai Nagar, Bhiwandi, Bhopal, Bhubaneswar, Bikaner, Chandigarh, Chennai, Coimbatore, Cuttack, Dehradun, Delhi, Dhanbad, Durgapur, Faridabad, Firozabad, Gaya, Ghaziabad, Gorakhpur, Gulbarga, Guntur, Gurgaon, Guwahati, Gwalior, Haora, Hubli and Dharwad, Hyderabad, Indore, Jabalpur, Jaipur, Jalandhar, Jalgaon, Jammu, Jamnagar, Jamshedpur, Jhansi, Jodhpur, Kalyan & Dombivali, Kanpur, Karnataka, Kochi, Kolapur, Kolkata, Kota,  Loni, Lucknow,  Ludhiana, Madurai, Maheshtala, Malegoan, Mangalore, Meerut, Mira, Bhayander, Moradabad, Mumbai, Nagpur,Nanded Waghala, Nashik, Navi Mumbai, Nellore, Noida, Patna, Pimpri & Chinchwad, Pune, Raipur, Rajkot, Ranchi, Saharanpur, Salem, Sangli Miraj Kupwad, Siliguri, Solapur, Srinagar, Surat, Thane, Thiruvananthapuram, Tiruchirappalli, Tirunelveli, Udaipur, Ujjain, Ulhasnagar, Vadodara, Varanasi, Vasai Virar, Vijayawada, Visakhapatnam, Warangal.

Expanding Flange Exporter to all major cities in the world

We export expanding flange to Seoul, Hanoi, Los Angeles, Rio de, Houston, York, Dammam, Al-Khobar, Bogota, Al-Jubail, Chiyoda, Abu Dhabi, Kuwait Santiago, Perth, Busan, London, Jakarta, Surat, Courbevoie, Dallas, Calgary, Mexico Muscat, Aberdeen, City, Edmonton, Riyadh, Caracas, Ahvaz, Brisbane, Moscow, Milan, Manama, Ulsan, Jaya, Granada, Vung Petaling, Melbourne, Montreal, Port-of-Spain, La Victoria, Istanbul, Janeiro, Karachi, New Singapore, Madrid, Lagos, Atyrau, Sydney, Kuala Dubai, City, Bangkok, Toronto, Gimhae-si, Lumpur, Jeddah, Pimpri-Chinchwad, Tehran, Doha, Ho-Chi-Minh-City, Algiers, Tau, Colombo, Ernakulam, Geoje-si, Cairo, Sharjah, Lahore.

Teshi exports Expanding Flanges in more than 50 countries. We have shipments going out monthly to different countries for our newly acquired customers. Our ready stock of Flanges helps us ship the Flange and meet the requirement and demands of our customers as fast as possible.

Frequently Asked Questions

Most frequent questions and answers

What are expanding flanges?

An expanding flange is a type of flange that is used to connect two pipes together. It is designed with a split in the flange that allows it to expand and contract as the temperature of the pipeline changes. This allows the flange to accommodate thermal movement in the pipeline without causing leaks or damage.

What are expanding flanges used for?

Expanding flanges are used to connect two pipes together in situations where thermal expansion and contraction may occur. They are typically used in pipelines that carry hot fluids or gases.

How are expanding flanges attached to pipes?

Expanding flanges are typically attached to pipes using bolts and nuts. The flange is placed over the end of the pipe, and the bolts are tightened to create a tight seal. The split in the flange allows it to expand and contract as the temperature changes.

What materials are expanding flanges made of?

Expanding flanges can be made of a variety of materials, including carbon steel, stainless steel, and alloy steel. The choice of material will depend on the specific application and the conditions the flange will be exposed to.

Are there different types of expanding flanges?

there are different types of expanding flanges, such as single expanding flange and double expanding flange.

Can expanding flanges be used in high pressure or high temperature applications?

Expanding flanges can be used in high pressure and high temperature applications, but they must be made of the appropriate material and be rated for the specific conditions they will be exposed to. It’s also important to consider the size and the material of the flange to match the pipe size and material to make sure the integrity of the connection.

How are expanding flanges maintained?

Expanding flanges should be inspected regularly to ensure that they are in good condition and that the seals are tight. Any damage or leaks should be repaired immediately. The bolts should also be checked and tightened if necessary to ensure that the flange is secure.

How to identify an expanding flange?

Expanding flanges are typically identified by the presence of a split or gap in the flange body which allows the flange to expand and contract. It can also be identified by the presence of a gasket or sealant between the flange and the pipe, which is used to prevent leaks.


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