Hational Tube tf oi'lc? Company, 



BOSTON, MASS. - - McKEESPORT, PENN. 



New York, 104 John St. St. Louis, 802 N. 2d St. 

 Chicago, cor. Clinton and Fulton Sts. 



WROUGHT- IRON PIPE, 



Lap-Welded, for Oil, Water, Steam, and Gas, also for 

 Mines. Coated with a Preventive of Rust. 



BOILER-TUBES, 



For Locomotive and Stationary Boilers. 



INJECTORS (Mack's Patent), 



For feeding Boilers with Hot Water. 



WATER-PIPE. 



We make a Special Light Pipe, weighing less than 

 One-Quarter (1-4) the Weight of Cast-Iron, and much 

 Stronger. Very Desirable for Water-Works in Cities or 

 Towns. 



J. C. CONVERSE, President, WM. S. EATON, Treasurer, 



McKEESPORT, Penn. BOSTON, Mass. 



