Specfication of seamless steel pipe: DIN 17175/1629 Outside Diameter of Seamless Carbon Steel Pipe : From 1/2" to 24" Length of Seamless Steel Pipe: 5. 8 meters for 20' container, 6 meters to 12 meters for 40' container Packing: In bundles, Varnish coating, Ends can be bevelled or plain, End capped.