ASME SA333 GR.6 High Pressure Steel Pipe
ASME SA333 Grade 6 High Pressure Seamless Steel Pipe is a specialized carbon steel pipe developed for applications involving both high internal pressure and extremely low temperatures. As a low-temperature service steel pipe, it is engineer...
ASME SA333 Grade 6 High Pressure Seamless Steel Pipe is a specialized carbon steel pipe developed for applications involving both high internal pressure and extremely low temperatures. As a low-temperature service steel pipe, it is engineered to perform safely and efficiently in harsh environments such as arctic regions, cryogenic processing facilities, and power plants where strength, toughness, and durability are essential under challenging conditions.
This pipe is manufactured in full accordance with the ASME SA333/ASTM A333 specifications, ensuring compliance with international standards for mechanical performance and chemical composition. The Grade 6 designation refers to its specific chemical makeup, which includes low carbon content and added manganese to enhance toughness and weldability. These characteristics make the pipe particularly resistant to brittle fracture, even at temperatures as low as -45°C (-50°F), making it ideal for cold-weather and cryogenic applications.
Material and Mechanical Properties
SA333 GR.6 pipes are produced from fine-grain carbon steel using a seamless hot-rolling or cold-drawing process, followed by normalizing or normalizing and tempering heat treatment. This controlled process refines the grain structure, improving impact resistance and ensuring uniformity in wall thickness and mechanical strength. The material provides:
High tensile strength and yield strength
Superior notch toughness
Excellent elongation and ductility
Low-temperature impact resistance
Applications
ASME SA333 GR.6 seamless steel pipes are widely used in:
Oil & Gas transmission lines
LNG storage and transport systems
Cryogenic processing plants
Petrochemical and chemical facilities
Power generation and boiler systems
Shipbuilding and offshore platforms
These industries rely on the pipe’s ability to withstand not only internal high pressure but also dynamic thermal conditions without cracking, deforming, or leaking.
Product Features
Seamless Construction: Ensures smooth internal surfaces for efficient flow and reduced pressure loss. No weld seams mean no weak points under stress.
High Pressure Resistance: Maintains performance in systems with extreme pressure demands.
Low Temperature Performance: Maintains strength and ductility at sub-zero temperatures.
Weldability: Easily welded using standard welding procedures, with no risk of weld zone embrittlement.
Corrosion Protection: Available with external coatings such as black paint, anti-corrosion oil, or hot-dip galvanization upon request.
Product Range
Outer Diameter: 1/2 inch to 36 inches (customizable)
Wall Thickness: SCH10 to SCH160, XXS, or customized
Length: Single random, double random, or fixed length up to 12 meters
End Types: Plain end (PE), beveled end (BE), or threaded end (TE)
All pipes undergo rigorous non-destructive testing (NDT) including ultrasonic testing, hydrostatic testing, and visual inspections to ensure 90% reliability. Third-party inspections and certifications can also be provided upon request.
Standard Compliance
ASME SA333 / ASTM A333 Grade 6
ASME B36.10M for dimensions
EN, DIN, or ISO equivalents available upon request
ASME SA333 Grade 6 High Pressure Seamless Steel Pipe is a critical solution for engineering projects that require dependable performance in extreme temperature and pressure conditions. It’s not just a pipe—it’s engineered assurance, built to last.
