Flanges Manufacturers in Kolkata
Flange Manufacturer in Kolkata
The trustworthy leading flanges manufacturers in Kolkata, with ex stock inventory of 500 tons Flanges are used for connecting pipes, valves, pumps, and other equipment to form a piping system. The use of flange provides easy access for cleaning, inspection, or modification. Flanges are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal. We are specialized in manufacturing a comprehensive range of carbon steel flanges, mild steel flanges, and stainless steel flanges from ½” NB to 48” NB. Steel flanges are widely used as connectors in piping systems to connect pipes to pipes, tees, reducers, elbows, valves, and other piping equipment.
We are manufacturer of all types of flanges such as Weld Neck Flange, Slip On Flange, Blind Flange, Plate Flange, Threaded Flange, Forged Flanges, Socket Weld Flange, Lap Joint Flange, Long Weld Neck Flange and, Anchor Flange. We specialize in producing Orifice Flange, Long Welding Neck Flanges, Expander Flange, and Reducing Flange. We are a manufacturer of flanges in the size range of 1/2″ (15 NB) to 48″ (1200NB), in compliance with dimensions as per ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings. Additionally, we can produce custom size flanges and rings for all our customers. As one of the leading flange manufacturers in Kolkata, we stock over 120 tons of stainless steel flanges, and 550 tons of mild steel flanges and carbon steel flanges. We can deliver custom-size CNC machined flanges within a week, and standard-size flanges are very quickly delivered.
|Materials||Stainless Steel, Carbon Steel, Mild Steel, Aluminium, Nickel Alloys|
|Specification||ASME, DIN, ASTM, EN, JIS, GOST|
|Size||1/2″ (15 NB) to 48″ (1200NB)|
|Standards||ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings|
|Pressure Rating||150, 300, 400, 600, 900, 1500, 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.|
|Packing||Wooden Pallet or Box Packing|
|Services||Cutting, CNC Machining, Threading, Polishing|
What is a Flanges? What are the Various Types of Flanges?
A flange is a type of fitting used to connect pipes, valves, pumps, and other equipment to form a piping system. A flanged joint involves three separate components; the flanges, the gaskets, and the bolting. One of the most important advantages of using a flange is that it allows more flexibility in maintenance.
The various types of flanges include Weld neck Flanges (WNRF), Slip-on Flanges (SORF), Blind Flanges (BLRF), Lap Joint Flanges, (SOLJ), Socket-weld Flanges (SWRF), Screwed (Threaded) Flanges, Long weld neck Flanges (LWNRF), Spectacle Blind Flanges, Spacer & Blind Flanges, Ring Type Joint Flanges (RTJ), Reducing Flanges, Raised Face (RF) Flanges, Orifice Flanges, Large Diameter Flanges, Custom Flanges, Drawing Flanges, Forged Flanges, Plate Flanges, Flat Face Flanges, etc.
What is flange material?
Materials for Flanges. Pipe flanges are manufactured in all the different materials like stainless steel, cast iron, aluminum, brass, bronze, plastic, etc. but the most used material is forged carbon steel and has machined surfaces.
What is flange grade?
The most common materials for pipe flanges (forged grades) are: ASTM A105 (carbon steel high temperature to match A53/A106/API 5L pipes), A350 Grades LF1/2/3 (carbon steel low temperature to match A333 pipes), A694 Grades F42 to F80 (high yield carbon steel to match API 5L pipe grades), ASTM A182 Grades F5 to F91.
What is flange standard?
A flange standard lays down the dimensions, surface finish, facing type, marking, material and technical specifications for flanges. National flange standards in Europe have largely been superseded by the European EN 1092 series.
What are the different flange standards?
Standard Flange Classification: The most common flanges pressure classes are #150, #300, #600, #900, #1500, #2500 and #3000 according to ASME designation. To other standards, as DIN, pressure classes are defined by the acronym PN, as for example, PN10, PN16, PN20, PN25, PN40, PN50, PN100, PN150, PN250 or PN420.
Each of the above characteristics will have an influence on how the flange performs across a range of processes and environments.
So how can you tell which flanges are up to the task and which are not?
Flanges are often classified based on their ability to withstand temperatures and pressures.
This is designated using a number and either the “#”, “lb”, or “class” suffix. These suffixes are interchangeable but will differ based on the region or vendor.
Flanges Standards & Markings
To help make comparison easier, flanges fall under global standards established by the American Society of Mechanical Engineers (ASME) — ASME B16.5 & B16.47.
If you’re attempting to replace or verify existing parts, all flanges must include markers — typically on their outer perimeter — to aid in the process.
These markers also follow a strict order:
Common classifications include:
Exact pressure and temperature tolerances will vary by materials used, the flange design, and flange size. The only constant is that in all cases, pressure ratings decrease as temperatures rise.
Special designations, if any — for example, QT for Quenched and tempered or W for repair by welding This guide offers a solid foundation of the basics of flange design and how to choose the ideal flange for your piping system. However, with a wide range of stainless steel flanges and other flange materials available, it is impossible to list every configuration, detail, or consideration.
Standards & Specifications for Manufacturing Flanges
- ASME B16.5 (Pipe Flange)
- A403/A403M (Wrought Austenitic Stainless Steel Piping Fittings)
- A182/A182M (Alloy Steel Forgings for high-Temperature)
- A105/A105M (Carbon Steel Forgings for Piping)
- A234/A234M (Piping Fittings of Carbon Steel and Alloy Steel for Moderate and High Temperature)
- A350/A350M (Carbon Steel and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing)
What are the Main Flange Manufacturing Grades?
|Stainless Steel Flange||Carbon Steel Flange||Alloy Steel Flange|
Large Diameter Flanges, Weld Neck Flanges, Socket Weld Flanges, Lap Joint Flanges, Pipe Flanges, Forged Flanges Exporter, Blockodised Finish Flanges, Hot Dip Gavlvanised Flanges, Threaded Flanges, Chrome Moly flanges Exporter in Kolkata, ANSI Flanges, ASME Flanges, DIN Standard Flanges Exporter, Forged Rings, Forged Circles Exporter in Kolkata
Flanges Available in 1/2″ NB to 48″ NB Sizes, ANSI B16.5, DIN Standards, A182, A105, A105N, A350LF2
An ISO 9001:2015 Certified Company, MSI Fittings Industries is a leading manufacturer and exporter of industrial forged flanges (A-182, ANSI B16.5) and plate flanges (A-240, ANSI B16.5) in Kolkata. The flanges are manufactured and supplied with a range of pressure ratings to meet customer specifications. Slip-On flange, Weld-Neck flange, and Lap-Joint Flange are three of the most popular types of flanges manufactured by us, with Threaded flange and Blind Flange also supplied to order.
Carbon Steel Flanges, Mild Steel Flanges, Stainless Steel Flanges Manufacturer in Kolkata
Other special large diameter flanges can also be supplied on customer demand. We stock many standard-size large-diameter slip-on flanges, blind flanges, and weld neck flanges in 304/304L, 316/316L, and also A-105 – carbon steel. Steel flanges are widely used in various industries including power generation, oil and gas transportation, petrochemical plants, refineries, wastewater treatment plants, marine, and pharmaceuticals plants among others.
We can offer carbon steel and alloy steel flanges with electro-galvanized coating and a black dining finish. Our flange products are supplied with EN 10204 3.1 Test Certification, with complete details on the chemical and physical properties of the materials. They are permanently marked with size, schedule, grade, and heat code.
An ISO 9001:2015 Certified Company, MSI Fittings Industries (Pipe Fittings and Flanges Division) is a leading manufacturer of a comprehensive range of carbon steel flanges, alloy steel flanges, and stainless steel flanges from ½” NB to 48” NB. We are Kolkata’s most trusted exporter of steel flanges in A105, A105N, ASTM A350 LF2 grade, ASTM A182 F304L, F316L, and Duplex Grades. All our products are supplied with related Mill Test Certificates, as per EN 10204 3.1.
Our High Quality Forged Flanges Manufactured In Following Cities
We distribute our stainless steel flange, alloy steel flange, and carbon steel flange products across all major cities and industrial areas in India such as Mumbai, Delhi, Bangalore, Hyderabad, Ahmedabad, Chennai, Kolkata, Surat, Pune, Nagpur, Indore, Thane, Bhopal, Visakhapatnam, Vadodara, Nashik, Faridabad, Rajkot, Aurangabad, Ranchi, Coimbatore, Raipur, Mysore, Bhubaneswar, Salem, Bhilai, Bhiwandi, Bikaner, Mangalore, Kochi (Cochin), Bhavnagar, Tirupur, Ankleshwar, Assam, Siliguri, Jamshedpur, Warangal, Nellore, Agartala and Thoothukudi.
All our products are manufactured with high-quality raw materials and supplied to our customers with complete guarantee and certifications.
Industrial Steel Flanges, Manufactured as per ANSI B16.5 – Stainless Steel Flanges, Carbon Steel Flanges, Alloy Steel Flanges
Steel Flange Production Range – ANSI / ASME Flanges
- Size: 1/2″ (15 NB) to 48″ (1200NB)
- Standards: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
- Pressure Ratings: Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.
- Types of Flanges: Weld neck Flanges (WNRF), Slip-on Flanges (SORF), Blind Flanges (BLRF), Lap Joint Flanges
(SOLJ), Socket-weld Flanges (SWRF), Screwed (Threaded) Flanges, Long weld neck Flanges (LWNRF), Spectacle Blind Flanges, Spacer & Blind Flanges, Ring Type Joint Flanges (RTJ), Reducing Flanges, Raised Face (RF) Flanges, Orifice Flanges, Large Diameter Flanges, Custom Flanges, Drawing Flanges, Forged Flanges, Plate Flanges, Flat Face Flanges, etc.
- Carbon Steel Flanges: ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8
- Stainless Steel Flanges: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L
- Alloy Steel Flanges: ASTM A182 F1, F5, F9, F11, F22, F91
- Special Alloy Flanges: Duplex, Super Duplex, Nickel Alloys
- Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
- Coating/Surface Treatment: Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
- Value Added Services: CNC Machining, Customised Flanges
Marking & Packing
Products are packaged to ensure that there is no damage during transit. In the case of exports, standard export packaging is done in wooden cases. All flanges are marked with Grade, Lot No, Size, Degree, and our trademark. On special requests, we can also, make custom marking on our products.
At Fitwel Industries, all fittings and flanges are subject to strict inspection at each stage of the production process, from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions, and quality conformity of products.
Test Certificates: Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report
We manufacture flanges according to various Specifications. The complete specifications and size range are given below.
|Flanges Size||1/2" (15 NB) to 48" (1200NB) DN10~DN5000|
|Flanges Standards||ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092|
|Flanges Pressure Rating ANSI||Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS Flanges|
|Flanges Pressure in DIN||6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 Flanges|
|Coating||Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized Flanges|
|Flanges Manufacturing Method||Forged / Threaded / Screwed / Plate|
|Flanges Manufacturer in Kolkata||
ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
|Material Forms||Stainless Steel, Carbon Steel, Alloy Steel, Duplex & Super Duplex Steel, Titanium, Hastelloy, High Nickel Alloy, etc.|
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
|Production Technique||Forged, Heat treated and machined|
|JIS Flanges||5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K Flanges|
|UNI Flanges||6Bar 10Bar 16Bar 25Bar 40Bar Flanges|
|EN Flanges||6Bar 10Bar 16Bar 25Bar 40Bar Flanges|
|Connect Type/ Flanges Face Type||Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove|
|Flanges Special design||
As per your drawing
AS, ANSI, BS, DIN and JIS
15 NB (1/2") to 200 NB (8")
Equal & Reducing Configurations
|Type Of Test||Direct-reading Spectrograph, Hydrostatic Testing Machine, X-ray Detector, Ultrasonic Flaw Detector, Magnetic Particle Detector|
|Equipment Used||Press Machine, Bending Machine, Pushing Machine, Electric Bevelling Machine, Sand-Blasting Machine, etc.|
|Country Origin||Indian / West Europe / Japan / USA / Korean|
Flanges Pressure Rating & Standards
|ASME/ANSI B 16.5||Weld Neck Flange, Slip on Flange, Blind Flange, High Hub Blind, Socket Weld, Lap Joint, Threaded Flange, Ring Type Joint|
|PRESSURE CLASS||150, 300, 400, 600, 900, 1500, 2500|
|ASME/ANSI B 16.47||Weld Neck, Blind Flange [Series A & B]|
|PRESSURE CLASS||75, 150, 300, 400, 600, 900|
|ASME/ANSI B 16.36||Weld Neck, Slip on Flange, Threaded Flange|
|PRESSURE CLASS||300, 400, 600, 900, 1500, 2500|
|BS 4504 SEC 3.1||Weld Neck, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange, Plate, Loose Plate, Loose Plate With Weld Neck , Blank Flange|
|PRESSURE CLASS||PN 2.5 TO PN 40|
|BS 4504[PART 1]||Weld Neck Flange, Hubbed Slip-On Hubbed Threaded, Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange|
|PRESSURE CLASS||PN 2.5 TO PN 400|
|BS 1560 BOSS||Weld Neck Flange, Socket Weld Flange, Slip-On Flange, Blind Flange, Screwed Boss Flange, Lapped Flange|
|PRESSURE CLASS||150, 300, 400, 600, 900, 1500, 2500|
|BS10||Weld Neck Flange, Plate Slip-On Flange, Screwed Boss Flange, Slip-On Boss Flange, Blind Flange|
|TABLE||D, E, F, H|
|DIN Flanges||DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673|
|PRESSURE CLASS||PN 6 TO PN 100|
Other Type Of Flanges Manufacturer In Kolkata
|Flanges Class 150||Flanges Threaded|
|Flanges Class 300||Flanges With 1/2 Npt|
|Flanges Class 1500||Flanges With Threaded Hole|
|Flanges Class 600||Flanges Weight 150#|
|Flanges Class 900||Flanges Rtj 1500|
|Flanges Class 2500||Flanges Ring Type Joint|
|Flanges Pn16||Flanges Flat Face|
|Flanges Pn10||Flanges Slip On|
|Flanges Pn40||Flanges Rtj 900|
|Flanges Pn 160||Flanges Rtj|
|Flanges Pn 64||Flanges Npt|
|Flanges Dn150 Pn16||Flanges Jis 5k|
|Flanges Din 2527||Flanges Jis B2220|
|Flanges Din En 1092-1||Flanges Jis 10k|
|Flanges Din 2633||Kf Flanges|
|Flanges Din 2576||Flanges B16.47|
|Flanges Asme B16.5 Class 300||Flanges Ansi B16.5 150|