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ERW (Electric Resistance Welded) Tubes Manufacturer, Supplier & Exporter — INOX STEEL INDIA

INOX STEEL INDIA is a trusted and globally recognized manufacturer, stockist, and exporter of ERW (Electric Resistance Welded) Tubes supplying to UAE, Saudi Arabia, Qatar, Oman, Kuwait, Africa, Europe, and North–South America. With advanced HF–ERW mills, in-line NDT testing, and precise forming technology, we deliver ERW tubes engineered for low/medium pressure service, structural fabrication, automotive engineering, and industrial applications.

Our ERW Tubes are manufactured from prime HR/CR coils sourced from reputed mills and processed through high-frequency welding technology to produce consistent, defect-free, and dimensionally accurate tubes. Whether you require round, square, or rectangular ERW tubes in MS/CS or stainless steel grades, INOX STEEL INDIA provides world-class quality backed by 3.1/3.2 certification and strong global export capabilities.

What Are ERW Tubes? (Technical Insight)

ERW (Electric Resistance Welded) Tubes are welded pipes produced by passing high-frequency electrical current through the edges of steel strip, heating the material, and forging the joint without filler metal. This creates a strong, uniform weld that is metallurgically equivalent to the base metal.

ERW tubes are preferred for:

Structural engineering
Mechanical fabrication
Furniture & racks
Water lines (low/medium pressure)
Scaffolding
Solar structure mounting
Automotive chassis & cross-members
Architectural & decorative applications (SS ERW)

How ERW Tubes Are Manufactured

Slitting & Coil Preparation: Prime HR/CR coils are slit into exact strip widths as per tube size.
Forming the Tube Shape: Rollers gradually form the strip into a round or pre-shaped hollow.
High-Frequency Induction Welding (HFI / HF-ERW): Edges of the strip are heated by electrical resistance and forged together under pressure. ✔ No filler metal ✔ No arc ✔ Strong, consistent weld seam
Bead Removal (Internal/External): Weld bead is removed to maintain smooth flow and high finishing.
Sizing & Calibration: The tube passes through sizing mills to achieve exact OD, WT & shape tolerances.
Non-Destructive Testing (NDT): Inline eddy current or ultrasonic testing detects any weld or surface inconsistencies.
Cutting, Straightening & Finishing: Tubes are cut into 3m/6m/12m lengths and straightened for perfect alignment.
Finishing: Black ERW, GI coated (IS 1239 Part 1), P&O pickled, Polished SS A554 mirror finish.

Key Advantages of INOX STEEL INDIA ERW Tubes

High Dimensional Accuracy — crucial for fabrication, frames & automotive parts
Uniform Wall Thickness due to precision strip forming
Highly Reliable Weld Seam — HF welding = strong, smooth, and tested
Cost-Effective vs Seamless for low/medium pressure applications
Ideal for Powder Coating & GI Coating due to smooth surface
Available in Round, Square, Rectangular, SHS/RHS
Excellent Strength-to-Weight Ratio for structures & solar frames
Large Production Capacity for bulk industrial requirements

This ensures perfect weld integrity, consistent wall thickness, superior finishing, and reliable service life.

MASTER TECHNICAL DATA SHEET — ERW (ELECTRIC RESISTANCE WELDED) TUBES

Section	Parameter	Technical Specification
General	Product	ERW (Electric Resistance Welded) Tubes / Pipes
	Manufacturing Process	High Frequency Induction Welding (HFI / HF-ERW) – No filler metal
	Shapes Available	Round • Square • Rectangular • Special Hollow Sections
	Length	3m, 6m, 12m (Custom: 3–14m)
	Surface Condition	Black • Pickled & Oiled (P&O) • Hot-Dip Galvanized (GI) • Polished (SS) • Satin / Mirror (A554)
	Applicable Standards	IS 1239 • IS 1161 • EN 10217-1 • EN 10219 • ASTM A513 • ASTM A249/A269/A270/A554 (SS)
Material Grades	Carbon Steel (CS/MS)	IS 1239, IS 1161 (YST 210 / 240 / 310), EN 10217-1 (P235TR1/TR2), EN 10219 (S235/S275/S355), ASTM A513
	Stainless Steel (SS)	304/304L • 316/316L • 310 • 321 • 347 (A249/A269/A270/A554)
	High-Tensile / Mechanical	CR/HR grades as per ASTM A513 Type 1–5
Dimensional Range	Round Tubes (OD)	12.7 mm – 610 mm
	Square Tubes	12×12 mm – 300×300 mm
	Rectangular Tubes	20×10 mm – 400×200 mm
	Thickness (WT)	0.8 mm – 12.5 mm
	Straightness	1 mm per meter max
	Squareness (Square/Rect.)	≤2 mm per 100 mm
Mechanical Properties – CS/MS ERW	YST 210	YS ≥210 MPa • TS ≥330 MPa • Elongation ≥20% • Hardness 120–160 HB
	YST 240	YS ≥240 MPa • TS ≥410 MPa • Elongation ≥18% • Hardness 130–170 HB
	YST 310	YS ≥310 MPa • TS ≥450 MPa • Elongation ≥16% • Hardness 150–190 HB
Mechanical Properties – SS ERW	304/304L	YS 205 MPa • TS 515 MPa • EL 40% • Max Hardness 92 HRB
	316/316L	YS 205 MPa • TS 515 MPa • EL 40% • Max Hardness 95 HRB
	321 / 347	YS 205 MPa • TS 515 MPa • EL 40% • Max Hardness 96 HRB
	310	YS 210 MPa • TS 520 MPa • EL 40% • Max Hardness 98 HRB
Chemical Composition – CS (Typical)	Carbon (C)	≤0.20%
	Manganese (Mn)	≤1.30%
	Phosphorus (P)	≤0.040%
	Sulphur (S)	≤0.040%
	Silicon (Si)	≤0.35%
Chemical Composition – SS (Typical)	304 / 304L	Cr 18–20%, Ni 8–12%, C ≤0.03–0.08%
	316 / 316L	Cr 16–18%, Ni 10–14%, Mo 2–3%, C ≤0.03–0.08%
	321 / 347	Cr 17–19%, Ni 9–13%, C ≤0.08%
	310	Cr 24–26%, Ni 19–22%, C ≤0.25%
Weld Characteristics	Weld Type	HF–ERW (High Frequency Induction Weld)
	Weld Seam	Smooth internal/external (bead removed as required)
	Weld Strength	Equal or superior to parent metal after forging
	NDT Testing	Eddy Current • Ultrasonic • Visual • Hydrostatic
Testing & QA	Mandatory Tests	Hydrostatic • Eddy Current • UT • Dimensional • Visual
	Optional Tests	PMI (SS Grades) • Flattening • Flaring • Hardness • Galvanizing test (for GI)
	Certifications	EN 10204 3.1 / 3.2 • ISO 9001 • PED • IBR (If Applicable)
Applications	Structural	Trusses • PEB • Buildings • Solar Structures • Fabrication
	Mechanical	Auto Components • Furniture • Racks • General Engineering
	Pressure Lines	Water Lines • Fire-Fighting (GI) • HVAC Medium Pressure
	Stainless ERW Use	Pharma • Food • Instrumentation • Decorative A554
End Finishes	End Types	Plain End • Bevelled End • Threaded (Optional for CS/MS)
	Surface Protection	Varnish • Oil-Coated • GI Coating • Polished (SS)
HSN Code	Carbon Steel ERW	7306.30.00
	Stainless Steel ERW	7306.40.00

How to Select the Right ERW Tube (Buyer Engineering Guide)

01.

Select Material Grade:

MS/CS (IS 1239 / IS 1161) → Fabrication, general engineering, water lines
High-tensile EN 10219 (S235/S275/S355) → Structure, solar, heavy fabrication
SS Grades (304/316/A554) → Decorative, architectural, food-grade

02.

Check Dimensional Range:

OD: 12.7 mm to 610 mm
Square: 12×12 to 300×300 mm
Rectangular: 20×10 to 400×200 mm

03.

Check Weld & NDT Requirement:

HF weld integrity
Eddy-current tested → for mechanical/pressure lines
UT tested → for sensitive fabrication

04.

Assess End Use Conditions:

Medium pressure → Select IS 1239
Structure → Choose IS 1161 / EN 10219
Decorative → Choose SS A554
Food/pharma → Choose A270/A269

05.

Identify Finishing Needs:

Black
Galvanized
P&O
Mirror polished (SS)

06.

Certification Requirements:

EN 10204 3.1 / 3.2
IBR (if applicable)
PED (EU Projects)

Global & Indian Market Demand for ERW Tubes

India:

Strong consumption in PEB, fabrication, construction, racks, furniture.
Automotive hubs: Pune, Chennai, Sanand, Bangalore.
Solar installations across Rajasthan, Gujarat, UP.

Middle East (GCC):

High demand for structural hollow sections.
HVAC & fire-fighting GI ERW tubes used extensively.
Large-scale infrastructure and metro projects.

Africa:

Water pipelines, Rural electrification structures.
Agricultural irrigation, Warehouse & building structures.

Europe & Americas:

Mechanical ERW tubes for automotive, machinery, and equipment.
Stainless steel ERW (A554) for architectural and railing applications.

INOX STEEL INDIA supports all markets with fast dispatch from JNPT, Mundra, Hazira, and global supply chain capability.

APPLICATIONS OF ERW TUBES (GRADE-WISE / TYPE-WISE)

ERW Tubes manufactured by INOX STEEL INDIA serve structural, mechanical, pressure, architectural, and fabrication industries. Below is an engineer-focused application mapping.

A. Carbon Steel / Mild Steel ERW Tubes (IS 1239 / IS 1161 / EN 10217-1 / EN 10219)

Application	Usage	Preferred Grades
Structural Fabrication	Trusses, frames, buildings, mezzanines	IS 1161 (YST 210/240/310), EN 10219 (S235/S275/S355)
PEB (Pre-Engineered Buildings)	Rafters, columns, purlins	EN 10219 S355J2
Solar Structure Mounting	Module mounting, posts, cross-members	IS 1161 / EN 10219
Scaffolding & Shuttering	Support tubes, props, walkways	IS 1239 / IS 1161
Auto & Mechanical Engineering	Chassis, roll cages, seating frames	ASTM A513 Type 1–5
Furniture & Racking Systems	Office furniture, display racks	IS 1161 / Cold-formed ERW
Water Lines (Low/Medium Pressure)	Plumbing, air, sprinkler lines	IS 1239 Part 1
GI Piping (Galvanized)	Fire-fighting, HVAC, compressed air	IS 1239 Part 1 (GI)

B. Stainless Steel ERW Tubes (A249 / A269 / A554)

Application	Usage	Grades
Pharmaceutical Applications	Purified water, storage loops	A269 316L
Food & Beverage	Dairy pipelines, conveyors	304/304L A269
Instrumentation Lines	Low-pressure control systems	A269 304/316L
Decorative & Architectural	Railings, gates, facades	A554 304/316 mirror polished
Heat Exchanger / Condenser (Light Duty)	Low thermal-stress exchangers	304/316 A249

SIZE RANGE & DIMENSIONAL TABLE (ENGINEER FORMAT)

ROUND ERW TUBES

NPS / OD (mm)	Wall Thickness Range (mm)	Approx. Weight (kg/m)*
12.7 – 21.3 mm	0.8 – 2.0	0.30 – 0.75
25.4 – 33.7 mm	1.0 – 3.2	0.90 – 2.20
38.1 – 60.3 mm	1.2 – 4.0	1.25 – 6.50
73.0 – 114.3 mm	2.0 – 6.0	4.50 – 14.90
141.3 – 168.3 mm	3.0 – 8.0	10.50 – 28.40
193.7 – 219.1 mm	3.2 – 10.0	15.20 – 43.30
273.1 – 323.9 mm	4.0 – 12.0	28.00 – 84.20
355 – 610 mm	5.0 – 12.5	40.00 – 150.00

* Weight varies with material grade & thickness.

SQUARE ERW TUBES (SHS)

Size (mm)	WT (mm)	Weight (kg/m)
20×20	1.0–2.0	0.60–1.25
40×40	1.6–4.0	1.75–4.50
100×100	3.0–8.0	6.70–20.00
200×200 – 300×300	5.0–12.0	18.00–80.00

RECTANGULAR ERW TUBES (RHS)

Size (mm)	WT (mm)	Weight (kg/m)
20×10	1.0–2.0	0.50–0.95
80×40	2.0–6.0	2.30–7.80
150×100	3.0–10.0	6.20–25.00
200×100 – 400×200	4.0–12.0	12.00–80.00

ERW TUBE PRICE LIST (INDICATIVE 2025 — INR & USD)

Material / Grade	Size Range	Price (INR/kg)	Price (USD/kg)	Typical Use
MS ERW (IS 1239)	½″–12″	₹ 62 – ₹ 78	$ 0.90 – $ 1.20	Water lines
Structural ERW (IS 1161 / EN 10219)	1″–20″	₹ 68 – ₹ 95	$ 1.00 – $ 1.35	Fabrication, solar
GI ERW (Galvanized)	½″–8″	₹ 85 – ₹ 120	$ 1.25 – $ 1.70	Fire-fighting, HVAC
SS 304 ERW (A554 / A249)	½″–6″	₹ 310 – ₹ 380	$ 3.80 – $ 4.60	Decorative, pharma
SS 316 ERW (A554 / A249/A269)	½″–4″	₹ 380 – ₹ 480	$ 4.60 – $ 5.80	Food-grade & marine

Prices depend on coil source, thickness, finish, and order volume.

HSN / HS CODE

Carbon Steel ERW Tubes: 7306.30.00
Stainless Steel ERW Tubes: 7306.40.00
Galvanized ERW Tubes: 7306.30.20

TESTING & QUALITY ASSURANCE — INOX STEEL INDIA

Mandatory Tests:

Hydrostatic Test (Hydro Test)
Eddy Current Test (ECT)
Ultrasonic Test (UT)
Bend / Flattening Test
Dimensional & Visual Inspection
Straightness Check
Weld Seam Examination

Optional / Special Tests:

PMI (for SS)
Salt Spray Test (GI tubes)
Hardness Test
Coating thickness (micron test)
Third-party inspection (SGS · TUV · Lloyds · DNV)

Why Choose INOX STEEL INDIA for ERW Tubes?

High-Frequency Weld Integrity: Our HF–ERW welds ensure a metallurgical bond stronger than the parent metal.
Precision Engineering: Every tube goes through forming and calibration for perfect consistency.
Certified Quality: Complete traceability with EN 10204 3.1 / 3.2, ISO 9001, and PED.
Global Grade Availability: Massive range including IS 1239, IS 1161, EN 10219, and SS A554.
Massive Ready Stock: Large stockyards in Mumbai & Ahmedabad for same-day dispatch.
Export Expertise: shipments to UAE, Saudi, Nigeria, South Africa, UK, Germany, USA, Brazil, Mexico.

ERW Tube Supplier near Alankar Cinema, Mumbai — INOX STEEL INDIA

Engineers searching for:

“ERW tube suppliers near me”
“ERW pipes in Mumbai”
“ERW hollow sections supplier in Maharashtra”
“ERW round/square/rectangular tube wholesalers”

Find INOX STEEL INDIA as a top recommended supplier due to:

Central location near Alankar Cinema
Dedicated B2B support
Ready stock
Same-day delivery within Mumbai region

Industries We Serve

Industry	Applications	Preferred ERW Grades
PEB / Construction	Trusses, purlins, bracing	EN 10219 S355, IS 1161
Solar Power	Module mounting frames	IS 1161 / S275 / S355
Automotive	Roll cages, chassis, frames	ASTM A513, CR ERW
Furniture	Chairs, racks, frames	IS 1161 (cold-formed)
Water Supply	Plumbing, air lines	IS 1239
HVAC / Firefighting	GI pipelines	IS 1239 GI
Pharma / Food	SS ERW polished pipes	A269 / A554

Packaging & Export Readiness

Every ERW Tube shipped by INOX STEEL INDIA is prepared for global transit:

Standard Export Packing

Steel strapped bundles
HDPE anti-moisture wrapping
Plastic end caps (optional)
Marking with Size + Grade + Standard + Heat No + Origin
Seaworthy wooden pallets / crates for container shipments

Export Documentation

Commercial Invoice
Packing List
Certificate of Origin
MTC (EN 10204 3.1 / 3.2)
SGS / TUV / BV Inspection (on request)

This ensures smooth customs clearance & zero damage during transit.

Talk to Our ERW Tubes Experts — Fastest Response in the Industry

Whether you require IS 1161 structural tubes, IS 1239 water lines, EN 10219 hollow sections, or SS A554 decorative tubes, our technical sales team will guide you to the correct grade, thickness & finish.

Inox Steel India

52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004

Email

alloy@inoxsteelindia.in, steel@inoxsteelindia.in

Phone

+91 9930796690

🔧 Whether you are building structures, fabricating equipment, supplying water lines, or designing solar power systems —
We deliver ERW tubes that perform, last, and exceed expectations.