With ASME SA420 Grade WPL 6 Pipe, guarantee operational integrity in harsh sub-zero conditions. Designed for essential pressure piping and pressure vessel construction where toughness and dependability at low temperatures are paramount, this specialty low-temperature carbon steel piping system is engineered ASME SA 420 Grade WPL 6 Pipe provides outstanding strength, ductility, and proven impact resistance, built to resist demanding conditions down to -46°C (-50°F.
WPL6 pipes are very essential in the oil and gas, chemical processing, power generation, and cryogenic service sectors, available from Amardeep Steel Centre in both carbon steel seamless pipes and welded constructions.
What is ASME SA 420 WPL 6 Pipe Specification?
Designed for low-temperature usage, ASME SA420 / ASTM A420 establishes the standard specification for wrought carbon steel and alloy steel piping fittings. The Grade WPL6 especially specifies a carbon steel composition best for low-temperature increased notch toughness. The "WP" denotes "Wrought Pressure," fitting or pipe; "L" denotes Low-Temperature service; and "6" is the particular grade within the standard. Maintaining system safety and avoiding brittle fracture under cold circumstances depends on these parts.
ASME SA 420 Grade WPL 6 Industry Standards & Certifications Compliance
Our ASME SA 420 Grade WPL 6 Pipes are manufactured and tested in accordance with international standards and come with relevant certifications:
| Standard / Certification | Compliance Description |
|---|---|
| ASME SA 420 / ASTM A420 | Standard specification for piping fittings of wrought carbon steel |
| NACE MR0175 / ISO 15156 | Compliant for use in hydrogen sulfide (H₂S) containing environments |
| PED 2014/68/EU | Pressure Equipment Directive compliance for EU markets |
| IBR Certified | Approved for use in Indian Boiler Regulations |
| API Compliance | Suitable for petroleum and natural gas industries |
| ISO 9001:2015 | Quality Management System Certified |
| EN 10253-2 | European Standard for Butt-welding pipe fittings |
ASME SA 420 WPL 6 Chemical Composition
The precisely controlled chemical balance ensures optimal low-temperature performance:
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.30 |
| Manganese (Mn) | 0.50 – 1.35 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Silicon (Si) | 0.10 – 0.35 |
| Copper (Cu) | ≤ 0.40* |
| Nickel (Ni) | ≤ 0.40* |
| Chromium (Cr) | ≤ 0.30* |
| Molybdenum (Mo) | ≤ 0.12* |
| Vanadium (V) | ≤ 0.08* |
Notes: Residual elements sum (Cu, Ni, Cr, Mo, V) won't be more than 1.00%. Excellent mechanical strength and vital toughness for cold climates and cryogenic uses are offered by this formulation.
Mechanical Properties & Low-Temperature Toughness
Rigorously tested to ensure performance under difficult situations, WPL6 pipes:
| Property | Minimum Value |
|---|---|
| Tensile Strength | ≥ 485 MPa (70,000 psi) |
| Yield Strength | ≥ 240 MPa (35,000 psi) |
| Elongation | ≥ 22% (in 2 inches/50mm) |
| Impact Test | Required at -46°C (-50°F) (Charpy V-Notch testing ensures resistance to brittle fracture) |
These mechanical characteristics verify that WPL6 carbon steel pipes can preserve structural integrity and ductility at designated low temperatures while safely managing high-pressure surroundings.
Product Specifications – ASME SA 420 Grade WPL 6
Amardeep Steel Centre supplies WPL6 pipes meeting the following specifications:
| Specification | Details |
|---|---|
| Standards | ASME SA 420 / ASTM A420 |
| Size Range | ½” NB to 48” NB (Custom sizes available) |
| Wall Thickness | SCH 10 to SCH XXS |
| Type | Seamless / Welded / Fabricated |
| Form | Pipe, Elbow, Reducer, Tee, Cross, Cap, Stub Ends |
| End Connections | Plain End, Beveled End, Threaded End |
| Surface Finish | Black Painted, Hot Dipped Galvanized, Anti-Rust Coated |
Key Applications for WPL6 Carbon Steel Pipes
ASME SA420 WPL 6 Pipes' special qualities make them perfect for:
- Cryogenic Processing Systems: Managing liquefied gases and other ultra-low temperature media.
- Low-Temperature Pressure Vessels & Heat Exchangers: preserving honesty in cold process units.
- Liquefied Natural Gas & Liquefied Petroleum Gas Plants: Facilities related to transportation, storage, and processing.
- Power Generation: Piping systems subjected to low-temperature procedures or cold ambient conditions.
- Oil & Gas Transportation: Pipelines conveying refrigerated goods or running in cold areas.
- Refineries and Petrochemical Units: specialized low-temperature process lines and utility systems.
Because of their consistent construction, the seamless variety of these carbon steel pipes is sometimes used for important, higher-pressure activities.
Advantages of ASME SA 420 WPL 6 Pipes
Using WPL6 grade pipes has major advantages:
- Excellent Low-Temperature Toughness: Certified impact resistance down to -46°C (-50°F).
- Superior Weldability & Formability: Makes conventional processes' easier manufacture and implementation possible.
- Reliable Performance: Verified track record in low-temperature and demanding pressure uses.
- Cost-Effectiveness: For low-temperature carbon steel needs, provides a mix of cost and performance.
- Versatility: Ideal for cold settings for both structural elements and fluid/gas conveyance
- Availability: Available in both seamless and welded versions to fit budgets and project requirements.
Related Products
- Carbon Steel Pipe & Tubes
- Carbon Steel Plates, Sheets & Coils
- Carbon Steel Bars, Rods & Wires
- Carbon Steel Flanges
Where to Buy Quality ASME SA 420 WPL 6 Pipes?
Specialising in ASME SA420 Grade WPL 6 for low-temperature uses, Amardeep Steel Centre is your reliable worldwide supplier and exporter of premium carbon steel seamless pipes and welded pipes. To guarantee compliance, traceability, and your piece of mind, all of our products are thoroughly tested, fully certified, and sent with complete documentation—including MTC EN 10204 3.1.
Get in touch right now to go over your needs, ask for a competitive price, or arrange a technical consultation.
Frequently Asked Questions (FAQ)
Q1: What is the primary use of ASME SA 420 WPL 6?
Commonly found in LNG/LPG plants, cryogenic facilities, refineries, chemical plants, and power stations needing toughness down to -46°C (-50°F), it is specifically developed for piping systems running at low temperatures.
Q2: Are WPL6 pipes available only in seamless form?
To suit different project requirements and budgets, Amardeep Steel Centre provides ASME SA420 Grade WPL 6 in both seamless (SMLS) and welded (ERW or Fabricated) forms.
Q3: What is the minimum design temperature for WPL6?
Charpy V-Notch testing shows that WPL6 grade materials have outstanding impact resistance at low temperatures as qualified for duty down to -46°C (-50°F).
Q4: How does WPL6 differ from standard carbon steel like ASTM A106 Grade B?
The application temperature is where they differ most. While A106 Grade B (per A106/SA106) is intended largely for high-temperature use and does not usually have necessary low-temp impact testing requirements, WPL6 (per A420/SA420) is particularly made and tested for low-temperature toughness.
