Cap type: Weld on, Material: Conforms to ASME SA-234 Grade B, Dimensions per ASME 16.9, Nominal Pipe Size: 3 ½, Outside Diameter: 4, Inside Diameter: 3.548, Wall Thickness: 0.226, Length E: 2.5, Pipe Schedule: 40, Approx Weight: 2.3 LBS
Click here for a downloadable and printable specification sheet for schedule 40/standard thickness carbon steel weld on caps