Seamless boiler tube and pipe for all applications in power generation including long-length tubes up to 25.3 m (83') Large ID-controlled seamless pipe and piping components, with all necessary machining operations, bottle-necked ends etc.; 220 to 1,300 mm (8.7" to 51") ID Multi-rifled seamless boiler tubes, cold-drawn, with internal spiral ribs; 28.58 to 76.2 mm (1.125" to 3") OD Seamless feedwater heater tubes, cold-drawn, straight tubes or 180° U-bends, 15 to 35 mm (0.59" to 1.38") OD