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 expander flanges?

A stainless steel expander flange, commonly referred to as an EXPF, is similar to a weld neck flange. The only difference between a welding neck flange and an industrial expander flange is that the expander flange hub expands to a larger size. In fact, the stainless steel expander flanges manufactured in our factory can even be expanded by two sizes.

Stainless steel expander flange connection to a larger pipe size?

If you are ever constrained by a limited space or if you simply need a connection to a larger pipe size, the use of alloy steel expander flanges provides a convenient way to connect equipment, pumps as well as valves. In addition, the use of carbon steel expander flanges can replace both a flange and a reducer. The pressure ratings and dimensions of the API expander flange comply with ANSI/ASME B16.5. As is typical for the hydraulic flange expander, this flange is manufactured with a raised face.

How to know or determine the class of a flange?

When trying to determine the flange rating or class of a flange, the best method is to look for a stamp printed onto the flange. If one is not visible, or it is worn, then start by counting the number of bolt holes. To know which flange to use in a pipeline first match the pressure of a bpipeline with the flange.

What is a flange adapter?

The flange adaptor is the most basic type of dismantling joint. On one side, it has a flange connection in accordance with the required flange standard, on the other an insertion socket for the pipe. A variety of standard pipe types can be connected. We at Teshi can manufacture various types of adaptors to suit your requirements.

How do you measure a flange or check the dimensions of a flange?

Use a calibrated ruler, tape or vernier to check the dimensions of a flange. Check the Inside diameter (ID) by finding the maximum width of the center hole in the flange. The best way is to do it with a vernier. To measure the outside diameter do it the same way and measure the outside dia of the flange. Measure the thickness of the flange by checking the height from the id of the flange with a vernier. Check the PCD of the flange by measuring the distance between two opposite holes and add one hole diameter to it. To know the no. of holes simply count it and confirm the hole dia by a vernier/tape.

What is raised face in a flange?

The raised face is the surface area that hosts the gasket. Flanges with different faces require different gaskets and shall never be mated to prevent leakage of the joint. RF and FF flanges may have different types of “finish” (i.e. roughness on top the surface): smooth, stock and serrated.

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