ERW Pipe Manufacturer, Stockist & Exporter in India

ERW Pipe Manufacturer, Stockist & Exporter in India – Exotic Metals LLP

Introduction: Precision Welding for Industrial Reliability

At Exotic Metals LLP, our ERW Pipes (Electric Resistance Welded) represent a pinnacle of modern manufacturing efficiency. Produced from high-quality steel coils, these pipes are formed by cold-rolling the strip into a cylindrical shape and then welding the longitudinal seam using high-frequency electric current. Unlike traditional welding methods that require filler metal, ERW pipes utilize the heat generated by the resistance of the metal itself to create a fusion bond that is as strong as the parent material.

ERW Pipe Manufacturer & Supplier in India

As a leading manufacturer and exporter in India, Exotic Metals LLP ensures that every ERW pipe undergoes rigorous heat treatment of the weld seam—a process known as "seam annealing"—to eliminate any potential hardness gradients. This results in a pipe with a homogenous grain structure that is highly resistant to internal pressure and mechanical stress. Our ERW pipes are the preferred choice for high-volume applications in water transport, oil and gas line pipe, structural scaffolding, and the automotive sector.

Technical Specification Table

Feature	Details
Outside Diameter (OD)	1/2" (21.3 mm) to 24" (610 mm)
Wall Thickness	1.0 mm to 20.0 mm (Schedule 5 to Schedule 80)
Standard Specifications	ASTM A53 Grade A & B, API 5L (Gr B to X80), IS 1239, IS 3589, BS 1387
Length	Single Random, Double Random, or Fixed Lengths up to 12 meters
Surface Finish	Black (self-color), Galvanized, Epoxy Coated, Varnished, or Pickled
Ends	Plain End, Beveled End (for welding), or Threaded & Coupled
Testing	Hydrostatic, Eddy Current, Ultrasonic (UT), and Radiography

Primary Types of ERW Pipes

Exotic Metals LLP offers a specialized range of ERW pipes tailored to specific pressure ratings and environmental conditions:

Water and Gas Line Pipes

These are standard-duty pipes used for the conveyance of non-critical fluids. Available in "Light," "Medium," and "Heavy" classes, they are often galvanized to prevent rust in plumbing and irrigation systems.
API 5L Line Pipes for Oil & Gas

Our high-performance ERW pipes for the energy sector are manufactured under the API 5L specification. These pipes are designed to handle the transportation of petroleum, natural gas, and water under high pressure, available in grades ranging from B up to X80.
Structural ERW Pipes

Specifically engineered for load-bearing applications, these pipes are used in the construction of bridges, stadium roofs, and industrial sheds. They offer an excellent strength-to-weight ratio and are easily welded into complex frameworks.
Precision ERW Tubes

Processed with tighter dimensional tolerances and a superior surface finish, these tubes are intended for the automotive and furniture industries. They are frequently used for shock absorbers, steering columns, and high-end furniture frames.
Boiler and Heat Exchanger ERW Tubes

Designed for high-temperature service, these pipes undergo specialized eddy current testing to ensure the absolute integrity of the weld seam, preventing leaks in critical heat transfer equipment.

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Grade Range: Diverse Alloys for Every Demand

We stock and manufacture ERW pipes in a variety of grades to ensure performance in both standard and corrosive environments:

Carbon Steel: ASTM A53 Gr. A/B, API 5L Gr. B, X42, X46, X52, X60, X65, X70, X80.
Stainless Steel: 304, 304L, 316, 316L, 321 (For specialized exhaust and chemical lines).
Alloy Steel: P11, P22, P5, P9 (For high-temperature structural use).
Galvanized Steel: Hot-dip galvanized for superior atmospheric corrosion resistance.

Chemical Composition (%)

Our ERW pipes are manufactured from high-purity coils to ensure weldability and strength.

Grade	Carbon (C)	Manganese (Mn)	Phosphorus (P)	Sulfur (S)	Silicon (Si)
ASTM A53 Gr B	0.30 Max	1.20 Max	0.05 Max	0.045 Max	—
API 5L X52	0.22 Max	1.40 Max	0.025 Max	0.015 Max	0.45 Max
IS 1239	0.20 Max	1.20 Max	0.04 Max	0.04 Max	—
SS 304L (ERW)	0.03 Max	2.00 Max	0.045 Max	0.03 Max	0.75 Max

Mechanical Properties

Ensuring the weld seam is as resilient as the pipe body.

Grade	Carbon (C)	Manganese (Mn)	Phosphorus (P)	Sulfur (S)	Silicon (Si)
ASTM A53 Gr B	0.30 Max	1.20 Max	0.05 Max	0.045 Max	—
API 5L X52	0.22 Max	1.40 Max	0.025 Max	0.015 Max	0.45 Max
IS 1239	0.20 Max	1.20 Max	0.04 Max	0.04 Max	—
SS 304L (ERW)	0.03 Max	2.00 Max	0.045 Max	0.03 Max	0.75 Max

Standard Weight Chart (Theoretical)

Formula: $(OD - WT) \times WT \times 0.02466 = Weight (kg/m)$ (for Carbon Steel).

Nominal Size (NB)	OD (mm)	Wall (mm)	Weight (kg/m)	Class/Schedule
15 NB	21.3	2.6	1.22	Medium (Class B)
25 NB	33.7	3.2	2.41	Medium (Class B)
50 NB	60.3	3.6	5.03	Medium (Class B)
80 NB	88.9	4.0	8.37	Medium (Class B)
100 NB	114.3	4.5	12.20	Medium (Class B)
150 NB	168.3	7.1	28.26	Schedule 40
200 NB	219.1	8.2	42.60	Schedule 40
300 NB	323.9	9.5	73.60	Schedule 40

Delivery & Packaging Information

At Exotic Metals LLP, we utilize high-standard logistics to protect the integrity of the weld and the pipe ends:

End Protection: All pipes are fitted with plastic or metal end protectors to prevent damage to the beveled ends or threads during handling.
Surface Coating: To prevent transit rust, pipes are coated with black varnish, anti-rust oil, or are hot-dip galvanized according to client preference.
Secure Bundling: Small diameter pipes are bundled in hexagonal shapes with steel strapping. Large diameter pipes are delivered in loose condition with protective slings.
Export Packing: For international maritime shipping, bundles are wrapped in moisture-proof HDPE fabric and placed in reinforced steel-framed crates if required.
Traceability: Every pipe is marked with its Heat Number, Specification, Grade.
Quality Assurance: We supply Mill Test Certificates (MTC) as per EN 10204 3.1, along with Hydro-test, Eddy Current, and Ultrasonic test reports.

Frequently Asked Questions (FAQ)

Is ERW pipe as strong as Seamless pipe?

Modern ERW pipes, especially those manufactured by Exotic Metals LLP, utilize high-frequency welding and online seam annealing. This makes the weld seam virtually indistinguishable from the parent metal in terms of strength. For most medium-pressure and structural applications, ERW is an excellent and cost-effective alternative to seamless.

What is the difference between ERW and HFI pipes?

HFI (High Frequency Induction) is a type of ERW welding that uses induction coils to heat the edges. It is a more advanced version of ERW that provides a very clean, high-quality weld, typically used for API 5L line pipes.

Can ERW pipes be used for underground oil pipelines?

Yes, when manufactured to API 5L standards and properly coated (such as 3LPE coating), ERW pipes are widely used for cross-country oil and gas transportation.

Does Exotic Metals LLP offer Galvanized ERW pipes?

Yes, we provide hot-dip galvanizing for ERW pipes, which involves submerging the pipe in molten zinc to create a thick, corrosion-resistant layer, extending the pipe's life in outdoor or underground use.

ERW Pipe