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Low Temperature Carbon Steel A420 WPL6 and WPL3 pipes and fittings are specifically designed for applications where materials must perform reliably at sub-zero temperatures. These carbon steel products are manufactured according to ASTM A420 standards, ensuring excellent toughness, durability, and resistance to brittle fracture under low temperature conditions.
Our range of WPL6 and WPL3 pipes and fittings includes seamless and welded pipes, elbows, tees, reducers, and flanges. These components are widely used in industries such as petrochemical, oil & gas, power generation, and refrigeration, where maintaining structural integrity in cold environments is critical.
Low Temperature Carbon Steel A420 WPL6 and WPL3 pipes and fittings are designed for use in cryogenic and sub-zero environments. These materials provide excellent toughness, durability, and strength at low temperatures, making them ideal for applications in the oil and gas, petrochemical, and power generation industries.
A420 WPL6/WPL3 carbon steel is primarily composed of iron with controlled levels of carbon, manganese, phosphorus, and sulfur. WPL6 has higher impact toughness suitable for extremely low temperatures, while WPL3 provides moderate low-temperature performance. The composition is carefully balanced to maintain structural integrity and prevent brittle fracture under sub-zero conditions.
The chemical composition of A420 WPL6 and WPL3 low temperature carbon steel is carefully controlled to provide optimal mechanical properties. This includes high tensile strength, impact resistance, and superior ductility, which makes these pipes and fittings ideal for transporting fluids and gases at temperatures below freezing.
We offer our Low Temperature Carbon Steel A420 WPL6 & WPL3 products in a variety of sizes, thicknesses, and specifications to meet diverse industrial requirements. All products undergo rigorous quality testing, including dimensional checks, hydrostatic testing, and non-destructive inspections, to ensure compliance with international standards.
These pipes and fittings exhibit high mechanical performance, with tensile strength typically ranging from 415–620 MPa and yield strength from 205–275 MPa. Charpy V-notch impact tests ensure toughness at temperatures as low as –50°C to –101°C, depending on the grade, making them reliable for cryogenic and low-temperature industrial systems.
While A420 WPL6/WPL3 is not inherently corrosion-resistant, it performs well under controlled conditions. Protective coatings, galvanization, or painting can enhance resistance to atmospheric corrosion. This makes the material suitable for pipelines, process equipment, and fittings exposed to mild or controlled environments.
Specification Table
| Property | WPL6 | WPL3 |
|---|---|---|
| Standard | ASTM A420 | ASTM A420 |
| Material Type | Carbon Steel | Carbon Steel |
| Temperature Rating | Low Temperature Service | Low Temperature Service |
| Pipe Type | Seamless & Welded | Seamless & Welded |
| Fittings | Elbows, Tees, Reducers, Flanges | Elbows, Tees, Reducers, Flanges |
| Applications | Petrochemical, Oil & Gas, Power, Refrigeration | Petrochemical, Oil & Gas, Power, Refrigeration |
| Mechanical Properties | Tensile Strength: 415-585 MPa, Yield Strength: 205 MPa min, Elongation: 20% min | Tensile Strength: 415-585 MPa, Yield Strength: 205 MPa min, Elongation: 20% min |
Chemical Composition (Typical ranges for SSS32760)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | WPL6 (%) | WPL3 (%) |
|---|---|---|
| Carbon (C) | 0.30 max | 0.30 max |
| Manganese (Mn) | 1.20 max | 1.20 max |
| Phosphorus (P) | 0.025 max | 0.025 max |
| Sulfur (S) | 0.015 max | 0.015 max |
| Silicon (Si) | 0.35 max | 0.35 max |
| Chromium (Cr) | 0.25 max | 0.25 max |
| Molybdenum (Mo) | 0.15 max | 0.15 max |
| Nitrogen (N) | 0.012 max | 0.012 max |
Mechanical Properties (Typical)
| Property | WPL6 | WPL3 |
|---|---|---|
| Tensile Strength (MPa) | 415 - 585 | 415 - 585 |
| Yield Strength (MPa) | 205 min | 205 min |
| Elongation (%) | 20 min | 20 min |
| Impact Test | Charpy V-notch: -29°C (-20°F) | Charpy V-notch: -29°C (-20°F) |
| Hardness | ≤187 HB | ≤187 HB |
Equivalent Grades
| Standard | WPL6 Equivalent | WPL3 Equivalent |
|---|---|---|
| ASTM | A420 WPL6 | A420 WPL3 |
| ASME | SA-420 WPL6 | SA-420 WPL3 |
| EN / European Standard | 1.0460 | 1.0460 |
| JIS / Japanese Standard | SPHC Low Temp Carbon Steel | SPHC Low Temp Carbon Steel |
| DIN / German Standard | St 35.8 | St 35.8 |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Nominal Pipe Size (NPS) | Schedule | Outside Diameter (OD) mm | Wall Thickness (WT) mm | Weight per Meter (kg/m) |
|---|---|---|---|---|
| 1/2" | STD | 21.3 | 2.77 | 1.68 |
| 3/4" | STD | 26.7 | 2.87 | 2.27 |
| 1" | STD | 33.4 | 3.38 | 3.57 |
| 1 1/2" | STD | 48.3 | 3.68 | 6.42 |
| 2" | STD | 60.3 | 3.91 | 9.27 |
| 4" | STD | 114.3 | 4.55 | 21.05 |
| 6" | STD | 168.3 | 5.54 | 36.83 |
| 8" | STD | 219.1 | 6.02 | 56.06 |
| 10" | STD | 273.0 | 6.55 | 80.62 |
| 12" | STD | 323.9 | 7.11 | 108.87 |
Types Of Low Temperature Carbon Steel A420 WPL6 WPL3 Pipe & Fittingss and Fittingss
SS S32760 Seamless Pipe
SS S32760 Welded Pipe
SS S32760 ERW Pipe
SS S32760S EFW Pipe
Low Temperature Carbon Steel A420 WPL6 WPL3S Seamless Fittings
S32760H Super Duplex Steel Welded Fittings
S32760 Super Duplex Steel Capillary Fittings
S32760H Super Duplex Steel Heat Exchanger Fittingss
Frequently Asked Questions (FAQ)
Q1: What is ASTM A420 WPL6 & WPL3?
A1: ASTM A420 WPL6 and WPL3 are grades of low temperature carbon steel used for manufacturing pipes and fittings suitable for sub-zero temperature applications. They are designed to provide excellent toughness and resistance to brittle fracture.
Q2: What are the common applications of A420 WPL6 & WPL3 pipes and fittings?
A2: These pipes and fittings are widely used in petrochemical plants, oil and gas industries, power plants, refrigeration systems, and other low temperature environments where maintaining material integrity is critical.
Q3: What types of pipes and fittings are available in WPL6 & WPL3?
A3: Both seamless and welded pipes are available along with fittings such as elbows, tees, reducers, and flanges. Custom sizes and schedules can also be supplied as per project requirements.
Q4: What are the mechanical properties of A420 WPL6 & WPL3?
A4: These low temperature carbon steel grades offer tensile strength of 415-585 MPa, yield strength of 205 MPa minimum, elongation of 20% minimum, and excellent impact resistance at temperatures as low as -29°C (-20°F).
Pipes & Fittingss Supplier
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