ASTM A333 Grade 6 from Hebei K-Steel Pipe Industry is the most widely specified carbon steel pipe material for low-temperature service applications. Manufactured in accordance with ASTM A333/A333M, this specification covers seamless and welded carbon and alloy steel pipe intended for use at low temperatures and other applications requiring notch toughness.
Key Features:
1) Both seamless and welded options in a wide range of sizes
2) Mandatory impact testing ensures reliability at -45°C proven low-temperature performance
3) Excellent weldability, pre-heat typically not required
4) Economical carbon steel solution for low-temperature requirements
ASTM A333 Gr. 6 Chemical Composition & Mechanical Property:
Chemical Composition |
Chemical Composition, % | Grade 6 |
C, max | 0.3 |
Mn | 0.29-1.06 |
P, max | 0.025 |
S, max | 0.025 |
Si, min | 0.10 |
Ni, max | 0.40 |
Cr, max | 0.30 |
Cu, max | 0.40 |
V, max | 0.08 |
Nb, max | 0.02 |
Mo, max | 0.12 |
Tensile Requirements | Grade 6 |
Yield Strength (min)
MPa (psi) | 240 (35,000) |
Tensile Strength (min)
MPa (psi) | 415 (60,000) |
General information:
Standard: ASTM A333
Grade: 6
Seamless: OD: 21.3-609.6mm; WT: Schedule 10, 40, STD, XS, to XXS; L: SRL / DRL / Cut to length
Welded: OD: 21.3-914.4mm; WT: Schedule 2.0-60mm; L: SRL / DRL / Cut to length
Ends:
1) Plain ends
2) Beveled ends
3) Threaded & Coupled
Available Coating: Bared, black painted (mill varnish), anti-corrosion coating.
Package: Hexagonal bundled with steel strips for small or medium sizes, loose packing for large diameter pipes, each bundle will not exceed 3tons. Waterproof material wrapped, wooden cases or crates for small sizes or special requirements.
Shipment: Land transportation by truck or train, sea transportation by container shipment or bulk vessel.
Our advantage:
Flexible Project Customization
We provide tailored manufacturing solutions to meet diverse project requirements, including customized outer diameter, wall thickness, and length specifications. In addition, we offer precision end preparation and a full range of anti-corrosion coating options to ensure optimal performance in various operating environments. This flexibility enables us to deliver line pipe solutions that align seamlessly with your technical and application needs.
Fast & Reliable Lead Time
With strong mill partnerships and readily available inventory resources, we are able to shorten production cycles and respond quickly to urgent project demands. Our integrated supply network ensures stable material availability, efficient scheduling, and on-time delivery — helping clients keep their projects on track without delay.
Advanced Technical & Quality Assurance
Equipped with our own metallurgical laboratories and supported by trusted third-party inspection agencies, we ensure every line pipe meets international standards and project specifications. Comprehensive testing and verification guarantee consistent mechanical properties, chemical composition, and coating integrity, providing clients with reliable, high-quality pipeline solutions.
Rapid Delivery & Complete Logistics
Leveraging fast supply capabilities and a well-established logistics network, we ensure timely delivery of line pipes to any project location. Our streamlined transportation and warehousing system minimize lead time, helping clients maintain smooth operations and meet critical project schedules.
