Pipe Fittings · Delhi NCR

Flanges Dealer & Stockist in Delhi

Getting a flange order wrong is expensive and always discovered on site, so it pays to be precise: the standard (Table E, ASA 150, PN16 and so on) sets the bolt circle and hole count, the type (slip-on, weld neck, blind) sets how it joins the pipe, and the facing (flat face or raised face) must match what it bolts to. Our free flange identification tool works backwards from the dimensions you can measure on site, which is the fastest way to identify an existing flange before ordering a mating piece.

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Slip on flange shown face on with eight bolt holes on its pitch circle, beside a weld neck flange in section — Slip-on and weld neck flanges — Table E, ASA 150 and ASA 300, showing PCD and bolt holes

Flanges — sizes, materials and specifications we supply

Specification	Details
Types	Slip on (SORF), weld neck (WNRF), blind, screwed, socket weld, lap joint, plate/slip-on plate, puddle flange
Standards	IS 6392 Table E / Table F, ASME B16.5 Class 150 & 300, DIN PN10/PN16/PN25, BS 10, IS 1538 for CI
Sizes	15 mm to 600 mm; larger to order
Materials	Carbon steel ASTM A105, SS 304/316 ASTM A182, cast iron, ductile iron, forged steel
Facing	Flat face (FF), raised face (RF), ring type joint (RTJ)
Options	IBR certified flanges, galvanised flanges, backing rings, gaskets and fastener sets

Where these are used

Pipe-to-pipe and pipe-to-equipment joints, pump and valve connections, tank nozzles, blanking off lines for hydro testing, water tank puddle flanges in civil works, HVAC and fire fighting pipework.

Why buy your Flanges from Namokar Enterprises?

We are a Delhi-based stockist, not a broker. That means the material you order is either on our floor in Chawri Bazar or coming direct from the manufacturer against our standing order — so the price you are quoted is the price you pay, and the delivery date you are given is one we control.

Ready stock of common sizes for same-day dispatch in Delhi NCR
Genuine brands only — Sant, Zoloto, Kartar, L&T, Audco, Advance, Jindal
Test certificates and ISI/IBR/UL documentation supplied with the invoice
Written quotations with item-wise rates, GST and freight — usually the same day
Technical help before you order, so you buy the right thing once

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Send your requirement

Item list, BOQ, drawing or even a photo of a hand-written list — whatever you have.

Flanges — common questions

How do I identify an existing flange?

Measure three things: the flange outside diameter, the bolt circle diameter (centre to centre across opposite holes), and the number of bolt holes. Enter them in our flange identification tool and it will tell you the standard and size. If the flange is unmarked and non-standard, send us a photo with the measurements on WhatsApp and we will identify it.

When should I use a slip-on flange versus a weld neck flange?

Slip-on flanges are cheaper, easier to align and welded with two fillet welds — fine for low and moderate pressure water, air and general service. Weld neck flanges have a tapered hub butt-welded to the pipe, giving a smooth bore and far better fatigue and thermal cycling performance. High pressure, steam, cyclic and code-governed piping should use weld neck.

What is Table E and how does it compare to ASA 150?

Table E is an Indian/British standard (IS 6392, derived from BS 10) widely used for water and low-pressure service in India, rated to around 10 bar. ASA/ANSI Class 150 is the American standard rated to around 20 bar at ambient. Their bolt circles and hole counts differ, so a Table E flange will not bolt to an ASA 150 flange — always confirm before ordering.

Need a price today?

Send us your BOQ, drawing or item list on WhatsApp and get a written quotation the same working day. Ready stock for most sizes at our Delhi godown.

💬 WhatsApp Your Requirement 📞 +91 99996 83666