Seamless Pipe Manufacturer, Stockist & Exporter in India

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

Introduction: The Ultimate in Pressure and Performance

At Exotic Metals LLP, our Seamless Pipes are the definitive solution for high-pressure, high-temperature, and critical safety applications. Unlike welded pipes, a seamless pipe is manufactured from a solid cylindrical steel billet that is heated and pushed or pulled over a piercing rod until the steel is shaped into a hollow tube. This process ensures the complete absence of any longitudinal or circumferential weld seams.

Seamless Pipe Manufacturer & Supplier in India

The primary advantage of a seamless pipe lies in its structural homogeneity. Without a weld seam, the pipe possesses uniform mechanical properties and can withstand significantly higher internal pressures and external stresses without the risk of seam failure. As a premier manufacturer and exporter in India, Exotic Metals LLP provides seamless piping that serves as the lifeblood of the global energy, petrochemical, and aerospace industries—where the integrity of the piping system is non-negotiable.

Technical Specification Table

Feature	Details
Outside Diameter (OD)	1/8" (10.3 mm) to 36" (914 mm)
Wall Thickness	1.0 mm to 100 mm (Schedule 5 to Schedule XXS)
Standard Specifications	ASTM A106 Gr B/C, A53, A333, A312, API 5L, EN 10216
Length	Single Random, Double Random, or Fixed up to 12.5 meters
Manufacturing	Hot Rolled, Cold Drawn, or Hot Pierced
Surface Finish	Pickled, Polished, Black Phosphated, Varnished, or Bare
Ends	Plain, Beveled, Threaded, or Victaulic Grooved

Primary Types of Seamless Pipes

Exotic Metals LLP offers specialized seamless sections tailored to meet various industrial thermal and chemical challenges:

High-Temperature Carbon Steel Pipes

Designed specifically for high-temperature service, these pipes are the standard for refineries, power plants, and industrial boilers. They are killed steels that maintain their structural integrity even under prolonged thermal exposure.
Low-Temperature Carbon Steel Pipes

For applications in Arctic environments or cryogenic processing, we provide Grade 6 seamless pipes. These undergo specialized Charpy V-notch impact testing at -45°C to ensure they do not become brittle in extreme cold.
Stainless Steel Seamless Pipes

Utilized in highly corrosive environments, our stainless seamless pipes (Grades 304L, 316L) are essential for chemical, pharmaceutical, and food processing plants. The seamless nature ensures there are no crevices for bacterial growth or localized corrosion.
API 5L Seamless Line Pipes

Produced for the oil and gas industry, these pipes are used for deep-well drilling and cross-country transportation of sour gas and oil. They are available in PSL 1 and PSL 2 (Product Specification Levels) to meet different safety tiers.
Cold Drawn Precision Seamless Tubes

For hydraulic systems and automotive fuel injection lines, we offer cold-drawn seamless tubes. These feature extremely smooth internal surfaces and ultra-tight dimensional tolerances, allowing for precise fluid flow and easy bending.

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Grade Range: Standard to High-Performance Alloys

We stock and manufacture seamless pipes in a vast array of materials to ensure compliance with global project requirements:

Carbon Steel: ASTM A106 Gr. B/C, A53, A333 Gr. 1/3/6, API 5L Gr. B to X80.
Stainless Steel: 304, 304L, 316, 316L, 316Ti, 317L, 321, 347, 904L.
Duplex & Super Duplex: UNS S31803, S32205, S32750, S32760.
Alloy Steel: ASTM A335 P1, P5, P9, P11, P22, P91 (For high-pressure power piping).
Nickel Alloys: Inconel 625, Monel 400, Hastelloy C276, Alloy 20.

Chemical Composition (%)

Our seamless pipes are verified for metallurgical purity to prevent cracking under high pressure.

Grade	Carbon (C)	Manganese (Mn)	Chromium (Cr)	Nickel (Ni)	Molybdenum (Mo)
ASTM A106 Gr B	0.30 Max	0.29–1.06	0.40 Max	0.40 Max	0.15 Max
ASTM A312 316L	0.03 Max	2.00 Max	16.0–18.0	10.0–14.0	2.0–3.0
ASTM A335 P91	0.08–0.12	0.30–0.60	8.00–9.50	0.40 Max	0.85–1.05
Duplex 2205	0.03 Max	2.00 Max	22.0–23.0	4.5–6.5	3.0–3.5

Mechanical Properties

Tested to withstand the most demanding physical environments.

Grade	Tensile (MPa)	Yield (MPa)	Elongation (%)	Hardness (HB)
ASTM A106 Gr B	415 Min	240 Min	30%	137 Max
ASTM A312 316L	485 Min	170 Min	35%	192 Max
ASTM A335 P22	415 Min	205 Min	30%	163 Max
Duplex 2205	655 Min	450 Min	25%	290 Max

Standard Weight Chart (Theoretical)

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

Size (NB)	OD (mm)	SCH 40 WT (mm)	Weight (kg/m)	SCH 80 WT (mm)	Weight (kg/m)
1/2"	21.3	2.77	1.27	3.73	1.62
1"	33.4	3.38	2.50	4.55	3.24
2"	60.3	3.91	5.44	5.54	7.48
4"	114.3	6.02	16.07	8.56	22.32
6"	168.3	7.11	28.26	10.97	42.56
10"	273.1	9.27	60.31	15.09	95.97
12"	323.8	10.31	79.73	17.48	132.08

Delivery & Packaging Information

At Exotic Metals LLP, we recognize that seamless pipes are precision assets. Our logistics ensure they remain defect-free:

End Protection: All seamless pipes are fitted with heavy-duty plastic end caps to prevent internal contamination and protect beveled edges.
Surface Guard: To prevent atmospheric corrosion, pipes are coated with black lacquer, 3LPE (Three-Layer Polyethylene), or FBE (Fusion Bonded Epoxy) based on client request.
Secure Bundling: Small diameter pipes are hexagonal-bundled with steel strapping. Large-diameter pipes are delivered with protective end-rings and padded slings.
International Logistics: For maritime export, bundles are wrapped in waterproof HDPE fabric and packed in reinforced steel-framed crates to ensure stability during the voyage.
Traceability: Every pipe is marked with the Heat Number, Size, Schedule, Grade.
Quality Documentation: We supply Mill Test Certificates (MTC) as per EN 10204 3.1, along with 100% Ultrasonic Testing (UT) and Hydrostatic testing reports.

Frequently Asked Questions (FAQ)

Why is Seamless pipe more expensive than Welded pipe?

The manufacturing process for seamless pipes—using solid billets and rotary piercing—is more complex and energy-intensive. Additionally, the lack of a weld seam makes the pipe safer for high-pressure applications, justifying the investment for critical projects.

Can Exotic Metals LLP provide "Hollow Bars" as Seamless Pipes?

Yes. In many mechanical engineering contexts, seamless pipes with heavy wall thicknesses are referred to as hollow bars. We provide these with precision-machined IDs for bushings and cylinder manufacturing.

What is the maximum pressure a seamless pipe can handle?

This depends on the material grade, diameter, and wall thickness (Schedule). Seamless pipes can handle pressures exceeding 10,000 PSI in specialized hydraulic and high-pressure steam applications.

Does Exotic Metals LLP offer "Cold Drawn" seamless pipes?

Yes. Cold-drawn seamless (CDS) pipes are pulled through a die at room temperature to achieve much smoother surface finishes and extremely tight dimensional tolerances compared to hot-rolled pipes.

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