ASTM A333 A334 Low Temperature Carbon Steel Pipe China Factory Suppliers

Leading China factory and suppliers of ASTM A333/334 Gr.1, Gr.3, Gr.6 low temperature carbon steel pipes. Compliant with GB/T6479-2013, GB/T150.2-2011, and GB/T18984-2016. High toughness and reliability for cryogenic service.

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Details

Detailed Parameters

Nominal Size	1/4” to 42” O.D.	Wall Thickness	Schedule 10 through XXH
Carbon Content	0.20% to 0.30%	Manganese Content	0.70% to 1.60%
Silicon Content	0.15% to 0.60%	Columbium Content	0.01% to 0.04% (Optional)
Standard Grades	ASTM A333 (Gr.1, 3, 4, 6, 7, 8, 9, 10, 11)	Tube Standard	ASTM A334 Gr.1
Temperature Limit	Down to -50°F / -46°C (Standard)	Cryogenic Limit	Below -150°F (Nickel Alloy)

Key Advantages

Superior Toughness

Enhanced impact resistance and toughness at temperatures as low as -50°F, preventing brittle fracture.

Fine Grain Structure

Uniform carbide dispersion ensures consistent mechanical properties across the entire pipe length.

Optimal Weldability

Low carbon content and columbium additions improve formability and welding efficiency for complex piping.

Cryogenic Ready

Nickel-alloy options available for extreme cryogenic use in space ships and chemical processing.

Precision Heat Treatment

Strict quenching and tempering processes to ensure uniform hardness and zero deformation.

Industry Compliance

Fully compliant with ASTM A333 and A334 standards for seamless and welded steel pipe service.

Product Gallery

Management Platforms

Inventory Control

Real-time tracking of steel pipe grades and sizes for immediate dispatch.

Quality Assurance

Rigorous testing of carbide dispersion and grain refinement for every batch.

Thermal Monitoring

Precision control of quenching temperatures in A3+ (30 ~ 50) ℃ range.

Logistics Planning

Optimized shipping routes for heavy-duty steel structure components.

Material Traceability

Full MTR documentation provided for all ASTM A333/A334 materials.

Production Scaling

Advanced furnace capacity management to maintain uniform heating cycles.

Investment Return Comparison

Feature	Standard Carbon Steel	Our LTCS Pipe	Nickel Alloy Steel
Low Temp Limit	0°C / 32°F	-46°C / -50°F	-101°C / -150°F
Toughness	Low	High (Fine Grain)	Ultra High
Weldability	Standard	Enhanced	Specialized
Lifespan	Moderate	Long (Low Stress)	Maximum (Cryo)
Cost-Effectiveness	High	Optimal	Premium

Frequently Asked Questions

Q: What is the difference between ASTM A333 and A334?

ASTM A333 is generally used for seamless and welded steel pipe for low-temperature service, whereas ASTM A334 focuses on seamless and welded steel tubes specifically for low-temperature applications.

Q: Why is Manganese content important in LTCS pipes?

High manganese (0.70% to 1.60%) helps in refining the grain structure, which significantly improves the toughness and prevents brittle failure at low temperatures.

Q: Which grade should I choose for temperatures below -150°F?

For applications below -150°F, we recommend Nickel-based alloy steel plates (such as SA-203 Grades A, B, D, E, and F), which are designed for cryogenic construction.

Q: How do you prevent cracking during the quenching process?

We use a controlled cooling rate (often 10% salt solution) and avoid rapid chilling in brine at critical temperature ranges (around 180°C) to prevent excessive stress and cracking.

Q: What are the available sizes for these pipes?

We offer nominal sizes from 1/4” to 42” O.D., with wall thicknesses ranging from Schedule 10 through XXH to meet diverse industrial requirements.

Q: Can columbium be added to the carbon steel?

Yes, adding 0.01% to 0.04% columbium improves grain refinement, formability, and weldability, making the steel suitable for shafts, forgings, and machine parts.