Seamless Steel Pipes

Name: Seamless Steel Pipes
Brand: JAYANT IMPEX
Price: 300.0 INR
Availability: InStock

300.0 INR/Piece

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Product Details:

Coating Type Bare / Varnished / Galvanized / Painted
Flexibility Rigid
Bend Radius Standard or as specified
Diameter 6 mm to 630 mm
Yield Strength 240 - 355 MPa (depends on material grade)
Temperature Range -40C to +600C (Depending on Material Grade)
Thread Type NPT/BSP/Custom (for threaded pipes)
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Seamless Steel Pipes Price And Quantity

Minimum Order Quantity 1 Piece
Price 300.0 INR/Piece

Seamless Steel Pipes Product Specifications

Standard ASTM A106, ASTM A53, DIN 17175, EN 10216, API 5L, IS 1239, IS 3589
Flexibility Rigid
Coating Type Bare / Varnished / Galvanized / Painted
Product Type Seamless Steel Pipes
Shape Round
Color Silver / Grey (with cap protection blue/yellow/black)
Rated Pressure As per standard/class (up to 6000 psi or as specified)
Material Grade A106 Gr.B, A53 Gr.B, API 5L Gr.B/X42/X52/X60, 304/316/316L/321/347
Section Shape Round
Material Carbon Steel / Alloy Steel / Stainless Steel
Bend Radius Standard or as specified
Yield Strength 240 - 355 MPa (depends on material grade)
Diameter 6 mm to 630 mm
Temperature Range -40C to +600C (Depending on Material Grade)
Application High-pressure fluid transmission, Gas pipelines, Heat exchangers, Boilers
Thread Type NPT/BSP/Custom (for threaded pipes)
Tensile Strength 415 - 585 MPa (depends on material grade)
Sealing Type Metal to Metal / Threaded Sealing / Welded
Connection Type Plain, Beveled, Threaded
Connection Welded, Threaded or Plain End
Surface Treatment Hot rolled / Cold drawn / Pickled & Oiled
Usage Industrial, Structural, Oil & Gas, Boiler, Petrochemical
Thickness 1 mm to 60 mm
Tolerance 0.5% or as per standards
Length Single Random, Double Random, or as per Requirement (up to 12 meters)
Outer Diameter 6 mm to 630 mm

Customization Available as per drawing / client specification
Inspection 100% Hydrostatic, Eddy Current, Ultrasonic & Visual Inspection
Packaging Bundled with steel strips, plastic caps, wrapped for export packing
Marking As per customer requirement (Stencil/Hard marking)
Test Certificates EN 10204 3.1, 3.2 available
Heat Treatment Annealed / Normalized / Quenched and Tempered
Manufacturing Process Hot Finished / Cold Drawn
End Protection Plastic caps at both ends
Pipe Ends Plain End, Beveled End, Threaded with caps
MOQ Negotible / As per order

Product Description

Seamless steel pipes are manufactured without a welded seam or joint. They are extruded from a solid cylindrical steel billet that is heated, pierced, and stretched into a hollow tube.

Because they lack a longitudinal weld seamwhich is typically the weak point in welded pipingseamless pipes offer significantly higher pressure ratings, superior structural integrity, and uniform strength around the entire circumference.

Manufacturing Process

The diagram below outlines the step-by-step transformation from a solid round billet to a finished seamless pipe:

Heating & Rotary Piercing: A solid steel billet is heated in a rotary hearth furnace to approximately 1200C and pierced down its center using a mandrel.
Elongating & Sizing: The hollow shell is rolled, elongated, and reduced in diameter to achieve the specified outer diameter (OD) and wall thickness.
Straightening & NDT: After cooling, the pipe undergoes mechanical straightening and rigorous non-destructive testing (ultrasonic/eddy current and hydrostatic pressure testing).

Key Material Categories & Standards

Material Class	Common Grades	Governing Standards	Typical Applications
Carbon Steel	ASTM A106 Gr. B / C, ASTM A53, API 5L (Gr. B to X80)	ASTM A106, API 5L, EN 10216-1	High-temperature steam, oil & gas pipelines, boilers
Alloy Steel	ASTM A335 (P9, P11, P22, P91), 4140, 4340	ASTM A335, EN 10216-2	Power generation, petrochemical cracking plants, hydraulic cylinders
Stainless Steel	TP304/304L, TP316/316L, Duplex 2205 / 2507	ASTM A312, ASTM A269, DIN 17458	Corrosive chemical transport, marine hardware, offshore oil rigs

Seamless vs. Welded (ERW / LSAW) Pipes

Operating Pressure: Seamless pipes can withstand 20% to 30% higher operating pressures than welded pipes of equivalent size and thickness.
Dimensional Range: Seamless pipes are typically manufactured up to 24 inches (NPS 24) OD. For larger diameters (e.g., 26" to 100"+), longitudinal or spiral welded pipes (LSAW/SSAW) are used instead.
Cost Factor: Seamless pipes carry a higher manufacturing cost due to the piercing and extrusion machinery required.

Comprehensive Range of Pipe Ends and Coatings

Our seamless steel pipes come with a variety of pipe ends such as plain, beveled, or threaded with protective caps. Surface treatments include bare, varnished, galvanized, or painted finishes, tailored to provide optimal protection and longevity under harsh operational conditions, including exposure to chemicals, moisture, and extreme temperatures.

Precision Manufacturing and Rigorous Testing

Seamless pipes are produced either hot-finished or cold-drawn, followed by precise heat treatments such as annealing, normalizing, or quenching and tempering. Extensive quality checks-hydrostatic, eddy current, ultrasonic, and visual inspections-are conducted on every pipe to assure integrity and reliability, supporting high safety standards in critical applications.

Efficient Packaging, Marking, and Documentation

We ensure secure bundled packaging with robust steel strips and export-quality wrapping. Pipe ends are protected with colored plastic caps. Accurate labeling and markings, including stencil or hard marking based on customer preference, are applied for full traceability. EN 10204 3.1 and 3.2 test certificates accompany each delivery, aiding regulatory compliance and inventory management.

FAQ's of Seamless Steel Pipes:

Q: How are seamless steel pipes inspected before delivery?

A: Each seamless steel pipe undergoes rigorous inspection methods, such as 100% hydrostatic, eddy current, ultrasonic, and visual examinations to guarantee structural integrity and consistent quality. This comprehensive process ensures the pipes meet industry standards and safety requirements for high-pressure and critical service applications.

Q: What options are available for the ends and coatings of seamless steel pipes?

A: Pipe ends can be supplied as plain, beveled, or threaded with caps to suit various connection requirements. Coating choices include bare, varnished, galvanized, or painted finishes, enhancing corrosion resistance and extending service life. End caps in blue, yellow, or black further protect the pipes during transit and storage.

Q: When are test certificates provided with seamless steel pipes?

A: Test certificates compliant with EN 10204 3.1 or 3.2 are issued and included with each shipment upon request. These certificates provide full traceability and assurance of the pipe's compliance with all mechanical, chemical, and physical specifications as required by international standards or customer demands.

Q: Where can seamless steel pipes be used?

A: Seamless steel pipes are suitable for a wide range of industries including oil & gas transmission, boilers, heat exchangers, petrochemicals, and general industrial and structural uses. Their robust design and comprehensive testing make them ideal for high-pressure, high-temperature, and corrosive environments.

Q: What is the process for customizing pipe dimensions or properties?

A: Customization is available based on client drawings or technical specifications. You can specify requirements such as length (up to 12 meters), diameter, wall thickness, end type, coating, and marking. The pipes are produced to comply with negotiated tolerances (down to 0.5%) and customer-defined standards.

Q: What benefits do seamless steel pipes offer over welded pipes?

A: Seamless steel pipes offer superior strength, uniformity, and reliability due to their homogeneous structure. They are free from weld seams that could act as weak points, making them particularly suitable for high-pressure, critical, or corrosive applications where safety and durability are paramount.

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