A691 5 Carbon Welded Pipes | ASME SA691 Welded Pipes Supplier

We are a trusted global provider of premium alloy steel welded pipes, serving critical infrastructure and industrial sectors across India, the United Arab Emirates (UAE), the Kingdom of Saudi Arabia (KSA), Kuwait, Qatar, the Sultanate of Oman, Iran, and Iraq. Engineered with precision, these welded pipes are manufactured using alloy compositions rich in chromium and designed for enhanced performance under mechanical and environmental stress. Their low carbon content contributes to improved weldability, while their magnetic characteristics and robust structure make them well-suited for diverse structural and process-based applications. Available in a wide range of outer diameters, wall thicknesses, and custom lengths, these pipes meet international engineering specifications.

Technical Overview

Alloy steel welded pipes are optimized for high-temperature operations, typically exceeding 500°C, making them indispensable in systems that demand resistance to thermal stress and oxidation. The strategic incorporation of chromium and molybdenum into the alloy composition markedly improves its resilience against corrosive degradation, high-temperature scaling, and hydrogen-induced embrittlement, making it exceptionally reliable for use in chloride-laden and marine operating environments. These pipes or A691 2.25 2-14 cr Welded Pipes are produced in sizes ranging from 1/8” NB to 36” NB, with wall thicknesses up to 20 mm. Precision manufacturing is complemented by advanced quality assurance protocols such as ultrasonic testing, hydrostatic testing, eddy current inspection, and non-destructive evaluation (NDE) to ensure compliance with ASTM A691 and ASME SA691 standards.

Applications & Industry Use

Due to their exceptional strength, corrosion resistance, and dimensional integrity, alloy steel welded pipes are widely employed across several industrial verticals. These include offshore oil and gas exploration, petrochemical facilities, refineries, automotive systems, power plants, steel manufacturing units, chemical processing equipment, and pharmaceutical machinery. Their durability under high pressure and temperature conditions makes them particularly effective in fluid transport and structural load-bearing components. Each pipe undergoes rigorous mechanical and chemical testing—including Rockwell hardness, intergranular corrosion analysis, positive material identification (PMI), and third-party inspections—ensuring optimal performance and reliability in the most demanding environments.

Alloy Steel Welded Pipes

ASTM A/SA 691 Alloy Steel Welded Pipe, Cr-Mo Welded Pipes, Welded Alloy Steel Pipe

Alloy Steel EFW Pipes

Alloy EFW Pipes, Chromium Molybdenum Steel EFW Pipes, ASTM A691 Chrome-Moly EFW Pipe

Alloy Steel High Pressure Pipes

ASTM A691 Alloy Steel High pressure pipes Supplier, Alloy Steel Boiler Pipes Exporter, ASME SA 691 High Temperature Steel Pipes

Specification :

ASTM A691 / ASME SA691

Dimensions :

ASTM, ASME and API

Outside Diameter :

6-2500mm; WT:1-200mm

Wall thickness :

0.3mm – 50 mm

Size :

1/8"NB TO 30"NB IN

Type :

Seamless / ERW / Welded / Fabricated Pipes

Form :

Round, Square, Rectangular, Oval, Hydraulic Etc

Length :

Single Random, Double Random & Required Length

End :

Plain End, Beveled End, Treaded

Schedules :

SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules

Inspection, Test Reports :

Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports

Packing :

Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests

Specials :

Sizes and Specifications other than above can be manufactured on request