Schedule 40. 21′ lengths. Threaded both ends. Coupling provided on 1 end. Import. No. 583-2520HCC: Size: 1/2″ x 21′, Schedule: Schedule 40, Inside Diameter: 1.049″, Outside Diameter: 1.315″, Wall Thickness: 0.133″, Weight Per Sq Ft: 1.68 lb, Material: Carbon Steel, Temperature Rating: 366 F, Connection Type: Male Threaded No. 584-2520HCC: Size: 3/4″ x 21′, Schedule: Schedule 40, Inside Diameter: 0.824″, Outside Diameter: 1.050″, Wall Thickness: 0.113″, Weight Per Sq Ft: 1.13 lb, Material: Carbon Steel, Temperature Rating: 366 F, Connection Type: Male Threaded No. 585-2520HCC: Size: 1″ x 21′, Schedule: Schedule 40, Inside Diameter: 0.622″, Outside Diameter: 0.840″, Wall Thickness: 0.109″, Weight Per Sq Ft: 0.85 lb, Material: Carbon Steel, Temperature Rating: 366 F, Connection Type: Male Threaded No. 586-2520HCC: Size: 1-1/4″ x 21′, Schedule: Schedule 40, Inside Diameter: 1.380″, Outside Diameter: 1.660″, Wall Thickness: 0.140″, Weight Per Sq Ft: 2.27 lb, Material: Carbon Steel, Temperature Rating: 366 F, Connection Type: Male Threaded No. 587-2520HCC: Size: 1-1/2″ x 21′, Schedule: Schedule 40, Inside Diameter: 1.610″, Outside Diameter: 1.900″, Wall Thickness: 0.145″, Weight Per Sq Ft: 2.72 lb, Material: Carbon Steel, Temperature Rating: 366 F, Connection Type: Male Threaded No. 588-252OHCC: Size: 2″ x 21′, Schedule: Schedule 40, Inside Diameter: 2.067″, Outside Diameter: 2.375″, Wall Thickness: 0.154″, Weight Per Sq Ft: 3.65 lb, Material: Carbon Steel, Temperature Rating: 366 F, Connection Type: Male Threaded