A691 2.25/2.14 Cr Welded Pipes | A691 Carbon Welded Pipe

We are a trusted manufacturer and global stockist of high-performance alloy steel welded pipes, engineered to meet the evolving demands of heavy-duty industrial sectors. These pipes are composed primarily of low carbon steel enhanced with a high concentration of chromium, giving them exceptional strength and resilience. Known for their magnetic properties and consistent dimensional stability, they are designed to perform reliably in demanding conditions. Offered in a wide variety of outer diameters, wall thicknesses, and lengths, these alloy steel welded pipes cater to standard and custom engineering requirements across regions such as India, the United Arab Emirates (UAE), the Kingdom of Saudi Arabia (KSA), Kuwait, Qatar, the Sultanate of Oman, Iran, and Iraq.

Technical Overview

These alloy steel welded pipes exhibit remarkable properties that make them ideal for high-temperature applications exceeding 500°C. Their composition allows for excellent resistance to oxidation, scaling, and stress corrosion cracking—especially in harsh, chemically active environments. Due to the presence of molybdenum and chromium, these pipes withstand electrochemical reactions, such as hydrogen generation and embrittlement, commonly caused by seawater and acidic media. Engineered in compliance with global standards such as ASTM A691, ASME SA691, these A691 5 Cr Welded Pipes are offered in a comprehensive size range from 1/8” NB to 36” NB, with wall thicknesses spanning 11 mm to 20 mm. To ensure superior structural reliability and product consistency, each unit undergoes rigorous quality validation through ultrasonic inspection, hydrostatic pressure tests, and eddy current evaluations.

Applications & Industry Use

Engineered for durability and high-pressure performance, these alloy steel pipes are widely used in critical sectors including offshore oil drilling, petrochemicals, refineries, power generation, and gas processing. Their versatility extends to industrial equipment manufacturing, automotive components, pharmaceutical production systems, and chemical processing units. Additionally, their resistance to mechanical wear and environmental corrosion makes them suitable for structural and heat exchanger applications. To guarantee superior product reliability, every pipe undergoes rigorous quality assurance protocols, including Rockwell hardness, intergranular corrosion, PMI testing, and third-party inspections. These robust pipes provide long service life and precise performance in mission-critical applications across global industries.

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