Steel Pipes · Delhi NCR

Seamless Pipes Dealer & Stockist in Delhi

Where pressure, temperature or code compliance rules out a welded seam, you need seamless pipe. Because it is extruded from a solid billet there is no longitudinal weld to fail, which is why ASTM A106 Grade B is the default specification for steam, high-pressure water, oil and gas service across Indian industry. We supply seamless pipe from approved Indian mills in schedule 40 and 80 as standard, with IBR Form III-C where the line falls under boiler regulations.

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Seamless steel pipes shown end on, with the heavy wall thickness typical of schedule 80 — Seamless pipe to ASTM A106 Gr.B — no welded seam, schedule 40, 80 and 160

Seamless Pipes — sizes, materials and specifications we supply

Specification	Details
Specifications	ASTM A106 Gr.B, ASTM A53 Gr.B, API 5L Gr.B, IS 3601, ASTM A335 P1/P5/P11/P22 alloy
Sizes	½" to 20" nominal bore
Schedules	Sch 20, Sch 40, Sch 80, Sch 160, XXS
Boiler tubes	ASTM A192, A210 Gr.A1/C for water wall and superheater service
Length	Single random 4.5–6.5 m, double random 9–13 m
IBR	Form III-C certification available for boiler and steam service
Source	Approved Indian mills and prime imported material, supplied with mill test certificates
Documentation	Mill test certificate, chemical and mechanical properties, hydro test, UT report

Where these are used

Steam distribution, boiler feed and superheater lines, thermic fluid and hot oil circuits, hydraulic power packs, refinery and petrochemical piping, high-pressure water, compressed gas, structural and machining stock.

Why buy your Seamless Pipes 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.

Seamless Pipes — common questions

What is the difference between ASTM A106 and ASTM A53?

Both are carbon steel pipe specifications. A53 covers welded and seamless pipe intended for general mechanical and low-pressure service, and permits galvanising. A106 is seamless only, with tighter chemistry and mandatory high-temperature mechanical properties, making it the specification for steam and elevated temperature service. When a drawing says A106 Gr.B, A53 is not an acceptable substitute.

What does Sch 40 and Sch 80 mean?

Schedule is a wall thickness designation. For the same nominal bore, Sch 80 has a thicker wall than Sch 40, so it withstands more pressure and has a smaller internal diameter. As an example, 2" NB Sch 40 is 3.91 mm thick while Sch 80 is 5.54 mm. Always specify both nominal bore and schedule.

Do you supply IBR certified seamless pipes?

Yes. We supply approved mills' seamless pipe with IBR Form III-C issued in the buyer's name. Please give us the boiler pressure and the inspecting authority's requirement at enquiry stage, as IBR material is a separate stock and lead time.

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.

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