ASME SA 420 Grade WPL 6 Pipe – Low-Temperature Carbon Steel

BS 3601 Grade 430 Pipe

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:

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:

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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.

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