Document 6RY6Vp8gLK74pBrrkJVNEaGd3

I I mow* ng&$ #Fs Wi^cSltawW tat. It"- - twwak" ><> =5ahgg .1 ?"'`Si**'"'"'" -*>w ""S. tub. >"'" "2wsb- . ^ut)e* 5Vf* nd fco,**en j ?MI ?. ',rv, re* '"'bn/Jl? '.( ' f. ""'" "* " tils &h.Zi N'C^ir* .4, u'.y -swlivi These 4 basic advantages PAY OFF when you're handling extreme pressures, high temperatures or complicated assemblies hat's why so many public utilities and other the assured safety, security, and dependability Thigh pressure steam plants have standard* of a solid forging. ixed on U-S'S National Seamless Boiler . What is equally important, these superior Tubes. To the Seamless Process of tube making "Walls Without Welds" have been continually --pioneered by National--can be credited much improved, both in their metallurgy and in their of the advance made in more efficient steam fabrication, to insure lasting safety and eco production. nomy under increasingly heavier loads. Piercing a tube from a solid billet of steel is the only process that absolutely removes all uncertainty regarding uniform wall strength-- that provides the structural homogeneity and NATIONAL TUI! COM?ANY, P1TT58UISH. PA. donas tritium imuss) cotomu sim commit, us rimusco. runic (out onmtmots ojmo sum rm tneif commit, ot rat NATIONAL p SetunleU BOILER TUBES UNITED POWER OocomboT IW* WHY search and shop for a boiler -- Install a Cleaver-Brooks engineered and packaged steam generator that fully meets your steam requirements and needs only a minimum of space and headroom. Off or Go* fired .. . Georeofeed 80% Effeleacy from fell leod Pawn fa 30% of Rofftg . . IN AU SIZES You can select from a range of sixes IS to 500 hp. -- and you can have your Cleaver-Brooks .steam generator equipped for oil, gaa, or with a combina tion burner which permits alternate use of gas or oil and provides for a quick change-over from one fuel to the other. smokeless operation-^Uminate fuel and ash'handling -- need no high or costly stacks--no special founda tions--fit under low headroom and Into limited space Equally important -- you get Cleaver-Brooks guar antee of at least 80% efficiency from full load down -- provide flexible operation to meet fluctuating loads -- fully meet all codes. to 30% of rating--with either gaa or oil as fuel -- Available in a sice to fit your needs --IS to 200 and IN ALL SIZES. p.sJ., IS to S00 hp.--write for Cleaver-Brooks steam generators enable you to Cleaver-Brooks Steam Gen bum the available fuel in your area -- give you dean. erator bulletin. CLEAVER-BROOKS COMPANY, 332 E. Keefe Ave., Milwaukee 12, Wit. .Cleaver-Brooks. WRITS os jraur btofaiMB latterhe*4 to Proa 8t*sm Coat CateuUtw-- rrady marcsca tHdt rule ibav lci| the coapmtln twain coat orban otlos OU. l*t orceeletfotL C=yfia,cAape S TEAM GENERATORS II t VI D >OWR December 1940 INDUSTRY I P f I I N . T.IAfil m