Leading Stockist of Alloy Steel Pipes, Fittings and Flanges

A420 WPL3 Buttweld Fittings

ASTM/ASME A/SA 420 WPL3 Buttweld Fittings 3.5% Nickel

We stock seamless 90° Elbows, 45° Elbows, Tees, Reducing Tees, Concentric Reducers and Eccentric Reducer buttweld fittings ranging from 1/2" - 16".

Our range covers wall thicknesses s20 trough to s160, STD (Standard), XS (Extra Strong) and XXS (Double Extra Strong). Availability is determined by Diameter.

All buttweld fittings are ordered Dual certified according to ASTM/ASME A/SA 420.

Certification is EN 10204 3.1 and conforms to NACE MR-01-03, NACE MR-01-75 and PED 97/23/EC. All fittings are impact tested at -101°c with minimum single values of 21J and minimum average values of 27J. We also have a range of fittings which are additionally impact tested at -105°c.

Element Composition %
Carbon 0.20 MAX
Manganese 0.31-0.64
Phosphorus 0.005 MAX
Sulfur 0.005 MAX
Silicon 0.13-0.37
Nickel 3.20-3.80


  Tensile Requirements
ksi MPa
Tensile Strength, min 65-90 450-620
Yield Strength, min 35 240