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ASME SA420 Grade WPL6 Low Temperature Carbon Steel Fitting LTC Buttweld 90DEG Elbow

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ASME SA420 Grade WPL6 Low Temperature Carbon Steel Fitting LTC Buttweld 90DEG Elbow

Brand Name : YUHONG

Model Number : ASME SA420 WPL6 Carbon Steel 90 Degree Elbow

Certification : ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008

Place of Origin : CHINA

MOQ : 1 PC

Payment Terms : L/C, T/T

Delivery Time : 7 DAYS

Packaging Details : Plwood case or Pallet

Product Name : Elbow

Specification : ASTM A420 , ASME SA420

Material : WPL6

O.D. : 1/8”NB to 48”NB

W.T. : Schedule 10s - Schedule XXS

Surface : Black Painting

Type : 45/90/180 Degree Elbow

Radius : SR, LR, 3D, 5D ...

Application : Power Generation, Oil & Gas, Chemical Processing, Pipeline

High Light : ASME SA420 WPL6 Low Temperature Carbon Steel Elbow, LTC Buttweld Pipe Fittings

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ASME B16.9 ASME SA420 WPL6-S Carbon Steel Buttweld Pipe Fitting 90Deg LR Elbow​

ASTM A420 / ASME SA420 WPL6 Buttweld Elbow, it is a pipe fitting (elbow) manufactured according to the material standard ASTM A420 (ASME SA420 is the equivalent Boiler and Pressure Vessel Code designation). The WPL6 designation specifies the grade of material, which is a normalized carbon steel suitable for low-temperature impact testing.

Chemical Composition of ASME SA420 Grade WPL6 Low Temperature Carbon Steel Pipe Fittings

Mn C P S Si Cr Mo Ni V Cu Cb
0.050-1.35 0.3 0.035 0.04 0.15-0.40 0.3 0.12 0.4 0.08 0.4 0.02

Mechanical Properties of ASME SA420 Grade WPL6 Low Temperature Carbon Steel Pipe Fittings

Standard Yield Strength 0.2% Proof (MPa) min Tensile Strength (MPa) min
ASTM A420 35 60-95

Impact Test temperature ASME SA420 LTC Low Temperature Carbon Steel Pipe Fittings

Grade Impact Test Temperature, ℉ (℃)
WPL6 -50 (-45)
WPL9 -100 (-75)
WPL3 -150 (-100)
WPL8 -320 (-195)

ASTM A420 WPL6 Pipe Fittings VS ASTM A234 WPB Pipe Fittings
Feature ASTM A420 WPL6 ASTM A234 WPB (Standard Grade)
Service Temp Down to -50°F (-45°C) Down to -20°F (-29°C)
Impact Test Mandatory (Charpy V-Notch) Optional (usually not required unless specified)
Heat Treatment Normalizing required As-formed is usually acceptable
Primary Use Low-temperature/cryogenic service Moderate temperature service

Applications

Because of its low-temperature toughness, WPL6 is used extensively in environments where carbon steel would otherwise become brittle and fail (brittle fracture).

  • Oil & Gas: Refineries, gas processing plants, and pipelines in cold climates (e.g., Northern Canada, Siberia).

  • Petrochemical: Plants handling liquefied gases like propane, butane, or ethylene, which are stored at cryogenic temperatures.

  • Power Generation: Feedwater systems and outdoor piping in cold weather regions.

  • Industrial Refrigeration: Ammonia plants and cold storage facilities.

ASME SA420 Grade WPL6 Low Temperature Carbon Steel Fitting LTC Buttweld 90DEG Elbow


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ASME SA420 Grade WPL6 Low Temperature Carbon Steel Fitting LTC Buttweld 90DEG Elbow Images

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