A trusted name in API 5L pipe, four decades of steel expertise
Trio Steel is one of the most trusted brands and a leading API 5L Pipes Manufacturer & Exporter — supplying Alloy Steel Pipes, Line Pipes, Stainless Steel Pipe, Carbon Steel Pipe, Fittings and Flanges in India and abroad.
Established in 1999, Trio Steel & Engineering LLP began as a specialist supplier of API 5L pipes and carbon steel fittings to the Oil & Gas, Onshore, Offshore and EPC industries — and has since grown into a full-line steel supplier trusted across global markets.
Why choose Trio Steel
Every pipe supplied by Trio Steel is carefully inspected to meet the highest quality and performance standards.
Pipeline materials are only as reliable as the supplier behind them — every pipe we ship is stocked, tested, and documented against the full checklist below.
Extensive Stock
Seamless and welded API 5L pipes ready to ship.
PSL1 & PSL2
Both pressure service levels, stocked and certified.
Grade B – X80
Nine grades across the full API 5L range.
Custom Sizing
Sizes, wall thicknesses and lengths to spec.
MTC Documentation
Mill Test Certificates with every shipment.
3rd-Party Inspection
Independent inspection available on request.
Fast Shipping
Worldwide logistics with dependable turnaround.
Competitive Pricing
Sharp rates on bulk and project-scale orders.
API 5L pipe types we supply
Seamless
For high-pressure applications requiring superior mechanical strength and reliability.
ERW
Economical, durable pipes for water transmission, structural and low-to-medium pressure use.
LSAW
Large-diameter pipelines for oil & gas transportation and offshore construction.
DSAW
Heavy-duty industrial projects requiring excellent weld integrity and structural performance.
Stocked to grade, certified to spec
| Grade | PSL1 | PSL2 | Typical Use |
|---|---|---|---|
| API 5L B | General service, low pressure | ||
| API 5L X42 | Water & gas distribution | ||
| API 5L X46 | Gathering lines | ||
| API 5L X52 | Mid-pressure transmission | ||
| API 5L X56 | Transmission pipelines | ||
| API 5L X60 | High-pressure transmission | ||
| API 5L X65 | Long-distance pipelines | ||
| API 5L X70 | High-strength trunk lines | ||
| API 5L X80 | Heavy-duty, offshore & EPC |
Quality remains at the core of everything we deliver
Every API 5L pipe undergoes comprehensive testing to ensure compliance with international requirements.
✓Hydrostatic Testing
✓Ultrasonic Testing
✓Radiographic Examination
✓Mechanical Testing
✓Chemical Analysis
✓Dimensional Inspection
✓Visual Inspection
✓Mill Test Certification
Our Markets
Below are the markets we serve with API 5L Pipes, Alloy Steel Pipes, Line Pipes, Stainless Steel Pipes, Carbon Steel Pipes, Fittings & Flanges.
Oil & Gas Industry
The supply of steel in the oil and gas industry is critical — used across construction, production and transportation of every project we support.
Offshore Industry
High quality steels supplied to clients globally from our substantial stockholding facility in the Middle East, evolving with the offshore business over the years.
Onshore Industry
High quality steels supplied to clients globally from our substantial stockholding facility in the Middle East, backed by a business built for onshore reliability.
Petrochemical Industry
Process plants engineered to manufacture petrochemicals at very large scale — steel supply designed around the demands of continuous processing.
Marine
Trio Steel now supplies the full spectrum of marine projects worldwide, having first made its name in the high-end race boat market over 30 years ago.
Engineering Industry
Steel is core to the engineering industry’s diverse demands. Rexal Tubes is a leading stockist in India, holding 800+ tons of carbon steel seamless pipe.
Documentation, logistics & project coordination — handled end to end
Whether you need small quantities for maintenance or bulk orders for EPC projects, our export team ensures hassle-free international delivery with quick turnaround.
- Asia Region 01
- Europe Region 02
- Middle East Region 03
- Africa Region 04
- North America Region 05
- South America Region 06
Countries We Export
From our Mumbai stockholding facility, Trio Steel ships API 5L pipe, fittings and flanges direct to project sites and stockists across South & Southeast Asia.
