Weld neck flanges
High pressure, high temperature and cyclic service. WNRF and WNRTJ, Class 150 to 2500.
Manufacturer in India since 1971
Flanges manufacturer in India, A105N to titanium
Forged flanges and B16.11 fittings since 1971 for steel plants, smelters, shipyards and EPC contractors. ASME, EN and IS patterns, standard or to drawing, in every grade from carbon steel to nickel alloys.
- Direct from the manufacturer, not a trader
- Every piece traceable to its mill certificate
- Third-party inspection welcome: any agency you name
- Reply from our estimation team, usually within one working day
Get a quick quote
Tell us the item, size, grade and quantity. We reply with price and delivery.
Reply within 1 working dayNo obligation
Prefer chat? WhatsApp +91 78900 09110Since 1971Manufacturing in India
ISO 9001:2015Certified quality system
IBR approvedBoiler and steam service
CS to TiCarbon steel to titanium and nickel alloys
Trusted by plants and EPCs across India
- AM/NS India
- JSW Steel
- Hindustan Zinc
- Lloyds Engineering
- Utkal Alumina
- Cochin Shipyard
Flanges we manufacture
Forged in-house, machined, inspected and certified. Every grade, every common standard.
Why Teshi
Why plant and EPC buyers choose Teshi
1971Manufacturing flanges, fittings and fabrications in India for over five decades
Direct from the manufacturer
You deal with the people who make it. No trader margin, no lost information between you and the shop floor.
Traceable to the heat
Every piece is marked and linked to its mill certificate. EN 10204 3.1 as standard, 3.2 when witnessed.
Every grade on one order
Carbon steel, alloy, stainless, duplex, nickel alloys and titanium, so a mixed BOQ goes to one supplier.
Inspection your way
Your QAP, your third-party agency, PMI and NDT as specified. Since 1971, ISO 9001:2015 certified and IBR approved.
Have a BOQ or drawing? Get a quotation from the manufacturer.
Send sizes, grades and quantities. Our estimation team usually replies within one working day.
Find flange dimensions in seconds
ASME B16.5 OD, bolt circle and bolting, marked on the drawing. Send the size to us in one click.
Flange dimension finder
Every ASME B16.5 dimension for weld neck, slip-on, socket weld, threaded, lap joint and blind flanges, ½ to 24 inch, Class 150 to 2500, and ASME B16.47 Series A and B weld neck and blind flanges, 26 to 60 inch. The section redraws to scale as you change type, size and class.
Dimensions per ASME B16.5 (½ to 24 inch) and ASME B16.47 (26 to 60 inch). The raised face is not included in thickness or hub length. Matching stud bolts come from Teshi Fasteners as a set.
Grades by material family
One supplier for the whole material take-off, so mixed-grade BOQs are not split across vendors.
SS 904L and 254 SMOAcid and chloride serviceSpecs and gradesDuplex and super duplexF51, F60, F53, F55Specs and gradesTitaniumGrades 1, 2, 5, 7 and 12Specs and gradesNickel alloysInconel, Hastelloy, Monel, Alloy 20Specs and gradesCopper-nickel90/10 and 70/30 for seawaterSpecs and gradesCarbon and alloy steelA105N, LF2, F11, F22, F91Specs and grades
Built for project and plant buyers
Facings
- Raised face (RF), serrated 125–250 AARH
- Flat face (FF)
- Ring-type joint (RTJ)
- Tongue and groove, male and female
Marking
Hard-stamped or stencilled with Teshi mark, size, class, grade, heat number, bore or schedule and standard, so every piece traces to its certificate.
Testing
- Dimensional and visual inspection
- PMI on alloy grades
- Hardness, impact (LF2), IGC (stainless) on request
- UT of forgings when your QAP calls for it
Packing
Faces protected, rust-preventive coating on carbon steel, packed in wooden cases or on pallets. Seaworthy packing for export orders.
Quality
How every order is checked
ISO 9001:2015 certified and IBR approved. The same four checks apply to every order, whether it is a dozen pieces or a full project BOQ.
Raw material check
Mill certificates are checked against the purchase order, and heat numbers are logged when material arrives.
Traceable processing
Heat numbers carry through cutting, forging or forming, machining and welding, so every piece links back to its mill certificate.
Testing and inspection
Dimensional checks, PMI and the NDT your QAP calls for. Third-party inspection is arranged when you specify an agency.
Documents with dispatch
Material test certificates to EN 10204 3.1, or 3.2 when witnessed, with the inspection reports your contract asks for.
Turnaround or project deadline? Talk to the manufacturer.
Urgent requirements, mixed grades and third-party inspection handled on one order.
Simple process
How ordering works
Four steps, no surprises.
Send your requirement
BOQ, drawing or a single line by form, email or WhatsApp.
Get a clear quotation
Price, delivery and inspection plan, usually within one working day.
Approve and inspect
QAP and drawings approved; your inspector is welcome at every stage.
Dispatch with documents
Packed, marked and shipped with test certificates and reports.
Where our products go
Industries we supply
Steel plants
Blast furnace, utilities and process piping
Smelters and chemicals
Acid plants, zinc, copper and alumina
Oil, gas and power
Refineries, petrochemicals and power plants
Water and infrastructure
Pipelines, cooling water and marine
Clients
Who we supply
Steel plants, non-ferrous smelters, shipyards and the EPC contractors who build for them. Most of our work is repeat business from these buyers.
- AM/NS IndiaHazira blast furnace packages
- Tata SteelSteel plant piping and flanges
- JSW SteelSteel plant piping and flanges
- SAILSteel plant supplies
- Jindal SteelDomestic and export flange orders
- Hindustan ZincDebari, Chanderiya and Kansariguda projects
- Utkal AluminaProcess plant supplies
- Larsen & ToubroEPC packages across metals and mining
- Lloyds Engineering WorksCarbon steel forged flanges
- Cochin ShipyardMarine piping components
- Summits HygronicsProcess equipment components
One group, one order
Complete your package with Teshi Group
Flanges, fittings, pipe, bolting and fabrication on one purchase order, with one set of documents.
PipeFittings.co.inASME B16.9 elbows, tees, reducers, stub ends and MSS SP-97 olets
Teshi PipesSeamless and welded pipe in stainless, duplex, alloy, nickel and carbon steel
Teshi FastenersASTM A193, A194 and A320 stud bolts and nuts, plus exotic-alloy bolting
Teshi Heavy FabricationsBlast furnace nozzles, rolled pipe, ducts, mitre bends and plate flanges to drawing
Teshi Process SolutionsPrefabricated pipe spools, acid-service piping and steam coils in corrosion-resistant alloysFAQ
Questions buyers ask
Is Teshi a manufacturer or a trader?
We manufacture flanges, butt-weld and forged fittings, fasteners and fabrications at our own units in India. Pipe, plate and structural items are supplied from stock or sourced from approved mills, so a whole project can go on one order.
Which flange standards do you make?
ASME B16.5, ASME B16.47 Series A and B, ASME B16.36 orifice flanges, B16.48 spectacle blinds, EN 1092-1, IS 6392, BS 10 and DIN, plus flanges to client drawings.
Do you make exotic-grade flanges?
Yes. Besides carbon, alloy and stainless steel we manufacture flanges in 904L, 254 SMO, duplex and super duplex, titanium Grades 1, 2, 5, 7 and 12, Inconel, Hastelloy, Monel, Alloy 20 and copper-nickel.
What certifications does Teshi hold?
Teshi is ISO 9001:2015 certified and IBR approved. Material test certificates are issued to EN 10204 3.1, and to 3.2 with third-party inspection when the order requires it.
How do I get a quotation?
Use the enquiry form, WhatsApp +91 78900 09110, or email your BOQ to info@teshigroup.com. Include grades, standards, sizes, quantities and the inspection you need.
Request a quote
Get a quotation from the manufacturer
Send your BOQ, drawing or tender reference. You deal directly with the manufacturer.
- Reply from our estimation team, usually within one working day
- Carbon steel to titanium on one order
- EN 10204 3.1 or 3.2 certificates, third-party inspection welcome
- ISO 9001:2015 certified and IBR approved, since 1971
Drawings and BOQ spreadsheets are easiest by email. Mention your project name.