Carbon Steel Pipe For Low-temperature And High-pressure Applications
Astm a333 grade 6 seamless pipe offers low-temperature toughness and corrosion resistance for cryogenic and industrial piping systems.
Carbon Steel Pipe For Low-temperature And High-pressure Applications
Astm a333 grade 6 seamless pipe offers low-temperature toughness and corrosion resistance for cryogenic and industrial piping systems.
ASTM A333 Grade 6 Seamless Pipe is a high-performance carbon steel pipe engineered for exceptional low-temperature toughness and corrosion resistance in demanding applications. Conforming to the ASTM A333/ASME SA333 specification, this low temperature pipe is designed with a composition of 0.30% max carbon, 0.29-1.06% manganese, and trace elements, making it ideal for boiler pipeline protection in cryogenic systems, oil and gas pipelines, and other industrial piping systems. Its seamless and welded construction ensures durability and reliability in extreme low-temperature conditions down to -45°C (-50°F).
The ASTM A333 Grade 6 Seamless Pipe is manufactured through hot-rolling or cold-drawing processes for seamless pipes, or electric-fusion welding for welded pipes, followed by heat treatments such as normalizing or stress-relieving to optimize mechanical properties. The manganese content enhances toughness and strength at low temperatures, while the low carbon content ensures weldability and corrosion resistance. Available in sizes from 1/8” to 36” (NPS 1/8 to NPS 36, DN6 to DN900), with wall thicknesses ranging from SCH 10 to XXS, and lengths up to 13.5 meters or customized, it meets diverse project requirements.
The Low Temperature Pipe undergoes rigorous testing, including impact testing at -45°C, tensile, flattening, hardness, and hydrostatic tests, to ensure compliance with ASTM A333 standards. With a minimum tensile strength of 415 MPa and yield strength of 240 MPa, the Grade 6 pipe offers excellent resistance to brittle fracture and thermal stress, making it ideal for handling cryogenic fluids and gases in LNG plants and petrochemical applications. Surface treatments such as galvanizing, FBE, or 3LPE coatings further enhance corrosion resistance, while plain, beveled, or threaded ends facilitate seamless integration into industrial piping systems.
Compared to other grades like ASTM A333 Grade 1 or alloy steel pipes like ASTM A335 P22, the ASTM A333 Grade 6 Seamless Pipe provides superior low-temperature impact toughness, making it a preferred choice for cryogenic pipelines and refrigeration systems. Its compatibility with fittings and flanges under ASTM A420 WPL6 standards ensures seamless integration into complex piping networks. The pipe’s ability to resist corrosion and stress cracking in low-temperature environments makes it ideal for oil and gas pipelines requiring reliable boiler pipeline protection.
Engineered to address critical challenges like pipeline wear, corrosion, and low-temperature embrittlement, the ASTM A333 Grade 6 Seamless Pipe delivers unmatched performance in high-throughput industrial systems. Its robust carbon steel composition and seamless or welded construction make it a reliable choice for engineers seeking durable industrial piping solutions for extreme low-temperature environments, ensuring safety, longevity, and efficiency in carbon steel pipe applications.
Withstands temperatures down to -45°C for cryogenic applications.
Coatings like FBE ensure durability in harsh environments.
Robust tensile strength for high-pressure systems.
Uniform construction ensures reliability in low-temperature applications.
Long lifespan reduces maintenance and replacement costs.
Ideal for LNG plants, oil/gas pipelines, and cryogenic systems.
| Spec. | Grade | O.D (mm) | W.T (mm) | Length (mm) | Pcs | Unit | Qty (Tons) |
|---|---|---|---|---|---|---|---|
| ASTM A333 | GR.6 | 88.90 | 4.00 | 6000-12000 | 15 | T | 1.3350 |
| ASTM A333 | GR.6 | 114.30 | 6.00 | 6000-12000 | 12 | T | 1.6980 |
| ASTM A333 | GR.6 | 114.00 | 7.00 | 6000-12000 | 3 | T | 0.5050 |
| ASTM A333 | GR.6 | 114.30 | 8.00 | 6000-12000 | 5 | T | 1.1050 |
| ASTM A333 | GR.6 | 114.30 | 12.00 | 6000-12000 | 2 | T | 0.6500 |
| ASTM A333 | GR.6 | 168.30 | 7.11 | 6000-12000 | 8 | T | 2.3380 |
| ASTM A333 | GR.6 | 168.30 | 7.11 | 12000 | 3 | T | 1.0320 |
| ASTM A333 | GR.6 | 168.30 | 7.11 | 6000-12000 | 4 | T | 1.2960 |
| ASTM A333 | GR.6 | 219.10 | 12.70 | T | 3.1820 | ||
| ASTM A333 | GR.6 | 323.80 | 9.53 | T | 1.9030 | ||
| ASTM A333 | GR.6 | 323.80 | 10.31 | T | 0.4560 | ||
| ASTM A333 | GR.3 | 48.30 | 5.08 | 6000-12000 | 22 | T | 1.3480 |
| ASTM A333 | GR.3 | 60.30 | 3.91 | 10300 | 18 | T | 1.0420 |
| ASTM A333 | GR.3 | 60.30 | 5.54 | 11800 | 17 | T | 1.5060 |
| ASTM A333 | GR.3 | 60.30 | 5.54 | 10500 | 4 | T | 0.3180 |
| ASTM A333 | GR.3 | 88.90 | 5.49 | 8600 | 8 | T | 0.7920 |
| ASTM A333 | GR.3 | 88.90 | 5.49 | 6000-12000 | 8 | T | 0.8360 |
| ASTM A333 | GR.3 | 114.30 | 6.02 | 6000-12000 | 8 | T | 1.2820 |
| ASTM A333 | GR.3 | 114.30 | 6.02 | 6000-12000 | 4 | T | 0.6580 |
| ASTM A333 | GR.3 | 114.30 | 6.02 | 6000-12000 | 6 | T | 0.8480 |
| ASTM A333 | GR.3 | 114.30 | 8.56 | 6000-12000 | 5 | T | 1.1660 |
| ASTM A333 | GR.3 | 168.30 | 7.10 | 6000-12000 | 5 | T | 1.3500 |
| ASTM A333 | GR.3 | 168.30 | 7.11 | 6000-12000 | 9 | T | 2.0200 |
| ASTM A333 | GR.3 | 168.30 | 7.11 | 6000-12000 | 3 | T | 0.9680 |
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.30 |
| Manganese (Mn) | 0.29–1.06 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Silicon (Si) | ≥ 0.10 |
| Nickel (Ni) | ≤ 0.40 |
| Chromium (Cr) | ≤ 0.30 |
| Copper (Cu) | ≤ 0.30 |
| Property | Value |
|---|---|
| Tensile Strength | ≥ 415 MPa |
| Yield Strength | ≥ 240 MPa |
| Elongation | ≥ 30 % |
| Impact Toughness | ≥ 27 J @ –100 °C |
| Hardness | ≤ 241 HBW |
| Standard | Pipes | Buttweld Fittings | Forged Steel Fittings | Valves | Bolts and Nuts |
|---|---|---|---|---|---|
| Low Temp Carbon Steel | A333 GR6 | A420 WPL6 | ASTM A350 LF2 | A352 LCB | A320 Gr L7 / A194 Gr 7 |
The equivalent grade to ASTM A333 GR6 is often EN 10216-4 P265NL or DIN 17173 TT St 35N. These grades share similar mechanical properties and are suitable for low-temperature service applications.
ASTM A333
Low temperature pipe refers to pipes specifically designed to withstand and operate effectively in environments with low temperatures, typically below 0°C (32°F).
These pipes are often used in industries such as oil and gas, petrochemicals, and refrigeration, where fluids need to be transported or stored at low temperatures. They are constructed from materials that can maintain their mechanical properties and structural integrity even in extremely cold conditions, ensuring the safe and efficient transportation of fluids. Additionally, low temperature pipes are insulated to prevent heat transfer and maintain the desired temperature of the fluid being transported.
Compared with austenitic stainless steel and duplex stainless steel, there are many comprehensive advantages of ferrite alloy steels for low temperature service, such as higher strength, better rigidity and lower expansion coefificient. There is not only better stability but aslo higher heat transfer efficiency. Tube & pipe for low-temperature service can be widely used in low temperature engineering. ASTM/ASME A/SA-333 Grades allow for cold temperature service to minus 150 degrees F. Material is always provided in the normalized condition at a minimum and Charpy Impact tested to a specific temperature range to assure compliance with the required service temperature.
Exceptional performance at temperatures down to -45°C with superior notch toughness and impact resistance.
Fine-grain structure with uniform carbide dispersion prevents brittle fracture in cryogenic conditions.
Economical alternative to exotic materials while providing reliable low-temperature performance.
Good weldability using conventional processes with minimal post-weld heat treatment requirements.
Precise control of chemical composition using electric arc furnaces with advanced ladle metallurgy techniques. Vacuum degassing reduces hydrogen content and eliminates inclusions.
Seamless pipes manufactured using hot piercing and rolling. Welded pipes produced using ERW or SAW processes with strict welding parameter controls.
Controlled heat treatment including normalizing at 815°C (1500°F), quench and temper, or stress relief to achieve optimal microstructure and properties.
Comprehensive testing including chemical analysis, mechanical testing, Charpy V-notch impact testing, hydrostatic testing, and non-destructive examination.
ASTM A333 Grade 6 Pipe in stock is widely used in industries requiring excellent high-temperature, high-pressure, and corrosion-resistant performance.
Used in boilers, superheaters, and steam lines in thermal and nuclear power plants.
Ideal for hydrocarbon processing, ethylene cracking, and heat exchanger units.
Used in LNG pipelines, storage tanks, and vaporization equipment for cold media.
Ensures excellent thermal conductivity and corrosion resistance in cyclic operations.
Handles high-pressure oil and gas in extraction, refining, and transportation systems.
Resists acidic and corrosive environments in reactors, scrubbers, and distillation units.
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