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Lap Joint Flange Manufacturer

Best Butt Weld Fittings Manufacturer in India since 1971.

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Lap Joint Flanges Manufacturers, Supplier and Exporter in India

Contrary to all the flange types seen above, blind flanges do not have a center hole, and are used to blind or seal a pipeline, a valve/pressure vessel and block the flow of the fluid.
Blind flanges have to withstand remarkable mechanical stress due to the system pressure and the required bolting forces. Blind flanges allow easy access to the pipeline, as they can be easily unbolted to let the operator execute activities inside the terminal end of the pipe (this is also the reason why the blind flange type is used as a manhole for pressure vessels, at times). It is maybe interesting to observe that, while this flanges type is easier to manufacture, they are sold at a premium average cost per kilogram compared to the other flange types.
We manufacture Galvanized BLIND FLANGE, Stainless steel (SS) BLIND FLANGE, Carbon steel (CS) BLIND FLANGE, MS BLIND FLANGE, Alloy BLIND FLANGE, Nicked BLIND FLANGE, Duplex stainless steel (DSS) BLIND FLANGE, Super Duplex Stainless Steel (SDSS) BLIND FLANGE, and Brass BLIND FLANGE.

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

Dimensions of Lap Joint Flanges

Lap Joint Flange 01

Standard Specification For Lap Joint Flange

Standard Specifications
Dimensions
ANSI B 16.5 Lap Joint Flange, BS 1560. BS 10 Lap Joint Flange, IS 6392 Lap Joint Flange, B-2.1 NPT Lap Joint Flange, API Lap Joint Flange, DIN Lap Joint Flange, JIS. MSS SP 44 Lap Joint Flange
Size
1/2” NB TO 24” NB.
Class
Lap Joint Flange 150#, Lap Joint Flange 300#, Lap Joint Flange 600#, Lap Joint Flange 900#, Lap Joint Flange 1500# & Lap Joint Flange 2500#
Material
ASTM A105 Lap Joint Flange, ASME A105 Lap Joint Flange ASTM A266 GR.1 Lap Joint Flange, GR.2 Lap Joint Flange, GR.3 Lap Joint Flange, GR.4 Lap Joint Flange ASTM A350 LF1 Lap Joint Flange, LF2 CL1/CL2 Lap Joint Flange, LF3 CL1/CL2 Lap Joint Flange ASTM A694 F42 Lap Joint Flange, F46 Lap Joint Flange, F48 Lap Joint Flange, F50 Lap Joint Flange, F52 Lap Joint Flange, F56 Lap Joint Flange, F60 Lap Joint Flange, F65 Lap Joint Flange, F70 Lap Joint Flange
Form
Lapped joint Flanges
Type
Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap-Joint Face (LJF), Large Male-Female (LMF), Small Male-Female (SMF), Large Tongue & Groove, Small Tongue, Groove

Material & Grades of Lap Joint Flange

Material & Grades
Stainless Steel Blind Flange
ASTM /ASME A/SA 213 / 249 / 269 / 312 / 358 CL. I to V – 304 , 304L , 304H, 309S ,309H , 310S, 310H , 316 , 316TI , 316H , 316 LN , 317 , 317L , 321 , 321H , 347 , 347 H , 904L .
Duplex Steel Flange
ASTM/ASME A/SA 789, 790 – UNS NO S 31803 , S 32205 , S 32550 , S 32750 , S 32760.
Carbon Steel Flange
ASTM A106 Gr. A , B & C API 5L Gr. A / B, X42 ,X52 ,X60 ASTM A 53 Gr. A/B
Alloys Steel Flange
ASTM /ASME A/SA 213 / 335 / 691 – P5,P9,P11,P12,P22,P91
Nickel Alloys Steel Flange
Nickel Alloys 200, Nickel Alloys 201
Hastelloy Steel Flange
Hastelloy C-22, Hastelloy C-276, Hastelloy C-2000, Hastelloy C-4, Hastelloy X, Hastelloy B, Hastelloy N, Hastelloy G
Inconel
Inconel 600, Inconel 601, Inconel 625, Inconel 625LCF, Inconel 686, Inconel 718, Inconel 800, Inconel 825, Inconel X-750 , Inconel 690, Inconel 602, Inconel 617, Inconel 925, Inconel A-289, Inconel AL-6XN, AL-904L

Teshi Group Is A Leading Supplier Of Lap Joint Flange in India

We supply lap joint 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.

Lap Joint Flange Exporter to all major cities in the world

We export blind 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 Lap Joint 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 is a flange lap joint?

A lap joint flange is a type of flange that is used to connect pipes, valves, or other equipment to a piping system. It is designed with a stub end that fits into a mating lap joint flange, which allows for easy disassembly and maintenance of the pipe or equipment.

What differentiates a lap joint flange from a slip-on flange?

A lap joint flange and a slip-on flange are both types of flanges that are used to connect pipes, valves, or other equipment to a piping system, but they have a few key differences.

  1. Design: The main difference between a lap joint flange and a slip-on flange is the design. A lap joint flange is designed with a stub end that fits into a mating lap joint flange, while a slip-on flange has a bore that is the same size as the pipe it is connecting to.

  2. Installation: A lap joint flange is typically installed by welding the stub end to the pipe and then bolting the lap joint flange to the stub end. A slip-on flange is installed by slipping it over the end of the pipe and then welding it in place.

  3. Flexibility: Lap joint flanges have a greater flexibility as they can be easily adjusted to accommodate slight misalignments in the piping system. Slip-on flanges are less flexible, and it is harder to adjust them to accommodate misalignments.

  4. Accessibility: The lap joint flange design allows for easy access to the inside of the pipe or equipment, making it easier to clean and inspect. Slip-on flanges don’t have this feature.

  5. Rating: Lap joint flanges are not typically recommended for high-pressure or critical applications because the flange does not have a direct contact with the pipe. Slip-on flanges have a higher pressure rating than lap joint flanges, but still less than other flange types.

  6. Cost: Lap joint flanges are typically less expensive than slip-on flanges.

Both types of flanges have their own advantages and disadvantages, and the selection of the type of flange to use depends on the specific application and the conditions the flange will be exposed to.

What are lap joint flanges used for?

Lap joint flanges are used to connect pipes, valves, or other equipment to a piping system. They are typically used in situations where easy disassembly and maintenance of the pipe or equipment is required.

How are lap joint flanges attached to pipes?

Lap joint flanges are typically attached to pipes using a stub end that fits into a mating lap joint flange. The stub end is welded to the pipe, and the lap joint flange is then secured to the stub end using bolts.

What benefit do lap joint flanges provide?

Lap joint flanges provide several benefits, including:

  1. Easy maintenance: The lap joint design allows for easy disassembly and maintenance of the pipe or equipment. This can save time and money by reducing the need for specialized tools and labor.

  2. Flexibility: Lap joint flanges can be easily adjusted to accommodate slight misalignments in the piping system. This can be useful in situations where the pipes or equipment are not perfectly aligned.

  3. Versatility: Lap joint flanges can be used with a variety of different pipe and equipment materials, making them a versatile option for a wide range of applications.

  4. Easy access: The design of lap joint flanges allows for easy access to the inside of the pipe or equipment, making it easier to clean and inspect.

  5. Improved safety: With the easy maintenance, inspection and easy access to the inside of the pipe or equipment, the safety for the workers during the maintenance is improved.

  6. Cost-effective: Lap joint flanges are typically less expensive than other types of flanges, making them a cost-effective option for many applications.

It’s important to note that lap joint flanges are not recommended for high-pressure or critical applications because the flange does not have a direct contact with the pipe.

What materials are lap joint flanges made of?

Lap joint 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 lap joint flanges?

There are different types of lap joint flanges, such as raised face lap joint flanges and flat face lap joint flanges.

Can lap joint flanges be used in high pressure or high temperature applications?

Yes, lap joint 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.

How are lap joint flanges maintained?

Lap joint flanges should be inspected regularly to ensure that the stub end and the lap joint flange are securely fastened and that the gasket or sealant is in good condition. Any damage or leaks should be repaired immediately.

How to identify a lap joint flange?

Lap joint flanges are typically identified by the presence of a stub end that fits into a mating lap joint flange. They also often have a gasket or sealant between the flange and the pipe, which is used to prevent leaks.

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