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ASME/ASTM SA/A 420 WPL6 Butt Weld Tees for Low-Temperature Service in Equal and Reducing Sizes
ASME/ASTM SA/A 420 WPL6 Butt Weld Tees for Low-Temperature Service in Equal and Reducing Sizes
ASME/ASTM SA/A 420 WPL6 Butt Weld Tees for Low-Temperature Service in Equal and Reducing Sizes
ASME/ASTM SA/A 420 WPL6 Butt Weld Tees for Low-Temperature Service in Equal and Reducing Sizes
Specifications
Description
ASME/ASTM SA/A 420 WPL6 Equal and Reducing Tees
ASTM A420 WPL6 is a designation for piping fittings made from wrought carbon steel and alloy steel specifically designed for low-temperature service applications.
Applications and Usage
A420 WPL6 low-temperature carbon steel is primarily used in:
  • Oil & gas, petrochemical, and power plants
  • Piping systems operating at design temperatures down to −46 °C (−50 °F)
  • Butt-welded fittings (elbows, tees, caps, reducers) compatible with A333 Gr. 6 or A106 piping
This material features controlled chemistry and impact toughness requirements to ensure performance in low-temperature environments.
Typical Chemical Composition
Standard specification limits for ASTM A420 Grade WPL6:
Element Composition Range
Carbon (C) max 0.30%
Manganese (Mn) 0.50 – 1.35%
Phosphorus (P) max 0.035%
Sulfur (S) max 0.040%
Silicon (Si) 0.15 – 0.30%
Copper (Cu) max 0.40% (residual)
Nickel (Ni) max 0.40% (residual)
Chromium (Cr) max 0.30% (residual)
Molybdenum (Mo) max 0.12% (residual)
Vanadium (V) max 0.08% (residual)
Composition Rationale
  • Low to medium carbon (≤ 0.30%): Maintains good toughness and weldability while reducing brittle fracture risk at low temperatures
  • Moderate manganese (0.50–1.35%): Improves strength and toughness while aiding deoxidation
  • Controlled phosphorus and sulfur: Minimizes hot shortness and weld cracking while improving impact toughness
  • Silicon content: Functions primarily as a deoxidizer with minor strength contribution
Important Considerations
Always consult the actual ASTM A420 standard and mill test certificate (MTC) for your specific heat/lot. The values provided represent typical specification limits and may vary. Some end users or project specifications may impose tighter limits, particularly for phosphorus, sulfur, or other elements.
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ASME/ASTM SA/A 420 WPL6 Butt Weld Tees for Low-Temperature Service in Equal and Reducing Sizes

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ASME/ASTM SA/A 420 WPL6 Butt Weld Tees for Low-Temperature Service in Equal and Reducing Sizes
ASME/ASTM SA/A 420 WPL6 Butt Weld Tees for Low-Temperature Service in Equal and Reducing Sizes

BEST PIPELINE EQUIPMENT CO.,LTD

Verified Supplier
9 Years
jiangsu, suzhou
Since 2010
Business Type :
Manufacturer, Distributor/Wholesaler, Agent, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Alloy Steel Seamless Pipes, Boiler Steel Pipe, Heat Resistant Stainless Steel Pipe
Total Annual :
1000000-5000000
Employee Number :
116~209
Certification Level :
Verified Supplier
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