Practical stationary engineering : in form of questions and answers (1909)
West, Andrew Cassius, 1855- · Boston, Mass. : A.C. West · leaf 29
ack endof the boiler or over the bridge wall. You cannot see thewhole of the boiler head, as it is bricked in from 2 to 3inches above the tubes*. This brick-work is put in to protectthe end of the boiler at the steam-space. The boiler has a 16 PRACTICAL STATIONARY ENGINEERING cast-iron front to… … Figure 5. BOILERS 17 What are tubes made of? Boiler tubes are made of steel or wrought iron, most com-monly of charcoal iron, and lap welded. In the formation ofthe lap the plate is upset, then bent around until the thick-ened edges lap sufficiently. It is then heated successively,about eight…
Steam engineering · Steam-engines · Steam-boilers
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