Hartford Steam Boiler Inspection and Insurance Company · Hartford, Ct. : Hartford Steam Boiler Inspection and Insurance Co · leaf 449
es, but cleaning and periodic inspections areabsolutely necessary if trouble is to be avoided. In general, if a tube which has corroded until its wall thickness, overa section having any dimension equivalent to the tube diameter, is notgreater than 75 per cent of the original wall thickness, it is… … Result of external corrosion of a blank head in a bent tube type boiler. examination absolutely necessary. By far the greatest hazard exists inthe blank heads, which, as has been frequently pointed out, shouldnever be embedded in the setting walls. Of approximately 6,500 drumheads once concealed in…
Locomotives · Steam-boiler explosions
Internet Archive · Carnegie Library of Pittsburgh · Public Domain Mark 1.0. Free to use for anything.
