ASTM A334 Gr6 Carbon Steel Seamless Tubes with Low Temperature Performance and Cold Drawn Precision
Product Details
Low Temperature Performance Carbon Steel Seamless Tubes
,ASTM A334 Gr6 Precision Steel Tube
,Cold Drawn Medium Carbon Steel Pipe
ASTM A334 Grade 6 Carbon Steel Seamless Tubes
Material Description
ASTM A334 Grade 6 carbon steel seamless tubes are engineered low-temperature service pipes manufactured from medium carbon steel with controlled chemistry and mechanical properties to ensure reliability in sub-zero environments. They are available as seamless and welded tubes designed for pressure, fluid, and structural duties where high toughness and impact resistance at low temperatures are essential.
Specifications
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Standard: ASTM A334/A334M – Standard Specification for Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service
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Grade: 6
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Form: Seamless (hot finished or cold drawn)
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Diameter & Wall: Typically 1/2″ to 24″ OD with multiple schedule thickness options (Schedule 10 to 160 and others)
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Length: Standard random lengths or custom lengths up to approximately 27 m
Key Characteristics
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Low-Temperature Performance: Designed for service in sub-zero and cryogenic environments without loss of toughness
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Mechanical Strength: Balanced tensile strength, yield strength, and ductility suitable for pressure and thermal cycling
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Impact Toughness: Mandatory notch-bar impact testing to ensure resistance to brittle fracture at low temperatures
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Weldability & Fabrication: Good weldability and formability with low risk of cracking
Why Choose ASTM A334 Gr 6 Tubes
Reliable Low-Temperature Service
ASTM A334 Gr 6 tubes maintain structural integrity and toughness in freezing environments such as LNG systems, cryogenic plants, and cold-region pipelines.
Standards Compliance
Manufactured strictly in accordance with ASTM A334/A334M requirements and commonly supplied with additional testing and inspection certificates.
Broad Industrial Acceptance
Widely used in power generation, petrochemical processing, refineries, and heat-exchange systems where low-temperature reliability is critical.
Optimized Chemical and Mechanical Balance
Grade 6 offers a proven balance of strength, ductility, and impact resistance, reducing operational risk and extending service life.
Chemical Composition Comparison
| Grade | C (max) | Si (min) | Mn | P (max) | S (max) |
|---|---|---|---|---|---|
| ASTM A334 Gr 1 | ≤ 0.30 | ≥ 0.10 | 0.40 – 1.06 | ≤ 0.025 | ≤ 0.025 |
| ASTM A334 Gr 3 | ≤ 0.19 | ≥ 0.10 | 0.31 – 0.64 | ≤ 0.050 | ≤ 0.050 |
| ASTM A334 Gr 6 | ≤ 0.30 | ≥ 0.10 | 0.29 – 1.06 | ≤ 0.025 | ≤ 0.025 |
| ASTM A334 Gr 7 | ≤ 0.19 | ≥ 0.13 | ≤ 0.90 | ≤ 0.040 | ≤ 0.050 |
| ASTM A334 Gr 8 | ≤ 0.18 | ≥ 0.13 | ≤ 0.90 | ≤ 0.045 | ≤ 0.045 |
Mechanical Properties Comparison
| Grade | Tensile Strength (MPa, min) | Yield Strength (MPa, min) | Elongation (%) |
|---|---|---|---|
| ASTM A334 Gr 1 | ≥ 380 | ≥ 205 | ≥ 30 |
| ASTM A334 Gr 3 | ≥ 450 | ≥ 240 | ≈ 30 |
| ASTM A334 Gr 6 | ≥ 415 | ≥ 240 | ≥ 30 |
| ASTM A334 Gr 7 | ≥ 450 | ≥ 240 | ≈ 30 |
| ASTM A334 Gr 8 | ≥ 520 | ≥ 240 | ≈ 30 |
Applicable Standards
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ASTM A334/A334M – Carbon and alloy steel tubes for low-temperature service
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ASME SA334 – Equivalent specification under ASME Boiler and Pressure Vessel Code
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ASTM A370 – Mechanical testing
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ASTM E23 – Charpy impact testing
Application Fields
ASTM A334 Grade 6 seamless tubes are used in applications requiring dependable performance at low temperatures:
Oil & Gas
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Cryogenic fluid transfer pipelines
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Low-temperature gathering and transmission lines
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Process piping in cold climates
Petrochemical & Refining
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Heat exchangers and condensers
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Pressure piping and vessels
Power & Energy
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Cryogenic power generation systems
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Refrigeration and cooling circuits
Industrial Equipment
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Structural and piping components exposed to low-temperature environments
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Chemical processing systems operating under cold conditions
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock,
it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
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