Technical Details Summary
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Manufacturing Process: Hot-finished or cold-drawn seamless extrusion from solid steel billets (zero weld seam).
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Dimensional Range: 1/2" NB up to 24" NB (15 NB to 600 NB) standard; custom thick-wall options up to 36" (900 NB).
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Wall Thickness & Schedules: SCH 20, SCH 30, SCH 40, SCH STD, SCH 80, SCH 120, SCH 160, SCH XXS (2.5 mm up to 50.0 mm wall thickness).
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Core Standards Stocked: ASTM A106 (Gr A, B, C), ASTM A53 (Gr A, B), ASTM A333 (Gr 1, 6), API 5L (Gr B to X60), ASTM A179, ASTM A192, ASTM A210, IS 1161, and IS 3589.
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Quality & Verification: EN 10204 3.1 Mill Test Certificates, 100% Eddy Current / NDT, Hydrostatic Pressure Testing, Flattening & Bending Tests.
Mild Steel Seamless Pipes Technical Specifications
Detailed dimensional parameters, manufacturing methods, and standard supply capabilities offered by Trident Metal & Alloys.
| Specification | Manufacturing Capabilities & Supply Limits |
|---|---|
| Size Range | 1/2" NB up to 24" NB (15 NB to 600 NB) |
| Schedules & Wall Thickness | SCH 20, 30, 40, STD, 60, 80, 100, 120, 140, 160, XXS; Wall thickness from 2.5 mm up to 50 mm |
| Manufacturing Form | Hot-Finished Seamless (HFS) and Cold-Drawn Seamless (CDS) in Round, Square, and Rectangular profiles |
| ASTM A106 / ASTM A53 | ASTM A106 (Grades A, B, C), ASTM A53 Seamless (Grades A, B) |
| ASTM A333 | ASTM A333 (Grade 1, Grade 6 rated down to -45°C) |
| API 5L | API 5L Seamless (Grade B, X42, X46, X52, X56, X60 - PSL1 & PSL2) |
| ASTM A179 / A192 / A210 | ASTM A179, ASTM A192, ASTM A210 (Grade A-1, Grade C) |
| IS 1161 / IS 3589 | IS 1161 (YST 210, YST 240, YST 310), IS 3589 (Fe 330, Fe 410, Fe 450) |
| Length Options | Single Random (5–7m), Double Random (10–12m), and Custom Fixed Cut-to-Length |
| Surface Treatments & Ends | Bare Black, Red Oxide Primer, Anti-Corrosion Varnish, Hot-Dip Galvanized; Plain End (PE), Beveled End (BE) |
Mild Steel Seamless Pipes Overview
Trident Metal & Alloys is a leading MS Seamless Pipes Manufacturer in India and global MS Seamless Pipes Supplier in India. Extruded continuously from solid steel billets, our Mild Steel Seamless Pipes feature zero weld seams, delivering superior hoop-stress resistance and uniform wall integrity for high-pressure boilers, refineries, sub-zero process plants, and structural columns.
We maintain ready inventory of Mild Steel Carbon Steel Seamless Pipe across ASTM, API, and IS specifications, all dispatched with EN 10204 3.1 MTCs and third-party inspection (TPI) clearance. For low-pressure fluid transport or lighter framing, check our MS ERW Pipes inventory or browse our full range of industrial Carbon Steel Pipes.
Mild Steel Seamless Grades & Standards
1. High-Temperature & Process Piping Grades
ASTM A106 — High-Temperature Pressure Pipes
Grade A (205 MPa Yield): Low-carbon grade engineered for cold bending, close coiling, and intricate fabrication.
Grade B (240 MPa Yield): Global refinery benchmark for high-temperature, high-pressure hydrocarbon loops.
Grade C (275 MPa Yield): High-tensile carbon grade for severe thermal loads and heavy-wall vessels.
ASTM A53 (Seamless) — Industrial Process Pipes
Grade A (205 MPa Yield): General-purpose pipe tailored for close-radius offset bends and utility lines.
Grade B (240 MPa Yield): High-strength process pipe used across power plants and factory steam mains.
2. Low-Temperature Service Grades
ASTM A333 — Low-Temperature Service Pipes
Grade 1 (205 MPa Yield): Fine-grained carbon steel designed to retain impact toughness in sub-zero process lines down to -45°C.
Grade 6 (240 MPa Yield): Standard low-temperature grade offering elevated notch toughness and resistance to brittle fracture down to -45°C.
3. Oil, Gas & Petrochemical Line Pipe Grades
API 5L (Seamless) — Oil & Gas Pipeline Grades
Grades B to X46 (245–320 MPa Yield): Standard to mid-yield carbon line pipe for field gathering networks and cross-country petroleum lines.
Grades X52 to X60 (360–415 MPa Yield): High-yield micro-alloyed pipe engineered for high-throughput, high-pressure natural gas transmission trunklines.
4. Boiler, Heat Exchanger & Thermal Tubes
ASTM A179 / A192 / A210 — Pressure Tubes
ASTM A179 / A192: Cold-drawn low-carbon tubes engineered for precise heat transfer in shell-and-tube heat exchangers, condensers, and high-pressure boilers.
ASTM A210 (Grades A-1 / C): Medium-carbon steel tubes providing high strength and thermal fatigue resistance for superheater coils and boiler headers.
5. Indian Standard (IS) Structural & Mechanical Grades
IS 1161 & IS 3589 (Seamless) — Structural & Heavy Utility Pipes
IS 1161 (YST 210 / 240 / 310): Heavy-duty seamless structural tubes for hydraulic rams, crane booms, and load-bearing columns.
IS 3589 (Fe 330 / 410 / 450): High-strength heavy-wall seamless pipes supplied for high-head water mains and penstocks.
Key Advantages of MS Seamless Piping
Zero Seam Vulnerability
Formed by hot piercing solid steel billets, eliminating longitudinal weld seams to prevent stress concentration failures under extreme pressure.
Superior Pressure Ratings
Wall thickness uniformity and isotropic mechanical strength allow higher working pressures compared to welded equivalents.
Enhanced Thermal Fatigue Resistance
Pure carbon steel chemistry ensures reliable structural stability under cyclic thermal loads in boilers and process loops.
Smooth Internal Bore
Pierced and cold-drawn inner surfaces minimize fluid turbulence, lower head loss, and prevent scaling buildup.
Quality Verification & Testing Standards
As a trusted MS Seamless Pipes Supplier in India, Trident Metal & Alloys implements strict quality controls across all stages of dispatch:
Non-Destructive Testing (NDT)
100% continuous Ultrasonic Flaw Detection or Electromagnetic/Eddy Current inspection applied across the entire pipe body.
Hydrostatic Pressure Testing
Every pipe length is hydro-tested to specified ASTM/API codes to confirm pressure containment and zero leakage.
Mechanical & Metallurgical Testing
Tensile strength, yield strength, elongation, flattening, flaring, and Charpy V-Notch impact tests (for ASTM A333).
Dimensional & Visual Verification
Strict wall thickness micrometer checks, laser concentricity inspection, bevel angle checks, and surface flaw audits.
Traceability & Certification
Dispatched with EN 10204 3.1 Mill Test Certificates including heat number traceability, full chemical analysis, mechanical property verification, and IBR form clearance where requested.
Regional Supply Network Across India
Western Region (Maharashtra & Gujarat)
Supplying MS Seamless Pipes to refineries, chemical complexes, and EPC contractors in Mumbai, Pune, Thane, Ahmedabad, Vadodara, Rajkot, Surat, and Hazira.
Northern & Central Region (NCR, Punjab, UP & MP)
Distributing ASTM A106, ASTM A333, and API 5L pipes for power plants, process industries, and MEP projects across Delhi NCR, Gurgaon, Faridabad, Ghaziabad, Ludhiana, Kanpur, Indore, and Bhopal.
Southern Region (Tamil Nadu, Karnataka, Telangana & AP)
Delivering seamless carbon steel pipes to thermal power units, hydraulic machinery plants, and water supply projects in Chennai, Coimbatore, Bengaluru, Hyderabad, Visakhapatnam, and Kochi.
Eastern Region (West Bengal, Odisha, Jharkhand & Chhattisgarh)
Bulk supply of heavy-wall seamless pipes for steel plant utilities, mining networks, and heavy infrastructure in Kolkata, Durgapur, Jamshedpur, Rourkela, Bhilai, and Raipur.
Frequently Asked Questions
Q: Why choose MS Seamless pipes over MS ERW pipes?
A: Seamless pipes have no weld seam, making them mandatory for high-temperature, high-pressure, cryogenic, or severe cyclic loading applications.
Q: What size ranges are available in MS Seamless stock?
A: We supply nominal bore sizes from 1/2" NB up to 24" NB across Schedule 20 to Schedule XXS wall thicknesses.
Q: Are these pipes certified for high-pressure steam and boiler applications?
A: Yes, our ASTM A106, ASTM A192, and ASTM A210 grades fully comply with IBR (Indian Boiler Regulations) and global pressure vessel codes.
Q: What surface protection options are supplied with seamless pipes?
A: Pipes are delivered in bare black, anti-corrosion varnish, red oxide primer, or hot-dip galvanized finish with plain, bevelled, or threaded ends.
Request a Quote
Contact Trident Metal & Alloys for mill-direct pricing, project stock availability, and technical specification support for your seamless piping requirements.
- Email Inquiries: tridentmetal96@yahoo.com
- Direct Phone / WhatsApp: +91 9619282829 / +91 9619966304
