Seamless steel pipe Application: mainly used for high-temperature fluids transmission(water, steam and other high-temperature fluids) Outside diameter: cold drawn --- 10.3mm114.3mm Hot rolled ----114.3mm 457.2mm Hot expanded --- 219.1mm 914.4mm Standard: astm a53/a106/a179/a500/a501, jis g3441/g3454, din 10210/10219.Din 17175 etc. End finish: square end/plain ends(straight cut, saw cut, torch cut), beveled end, threaded Surface: bare, lightly oiled, black/red/yellow painting, zinc/anti-corrosive coating Packing: steel strips bundled/in bulk, plastic caps plugged, waterproof paper wrapped