Laying out for boiler makers and sheet metal workers; a practical treatise on the layout of boilers, stacks, tanks, pipes, elbows, and miscellaneous sheet metal work . 74-3 Tabos, i-,. Ci;ntersFIG. 16. 61-3« Tulji;s, iX Centers FIG. Stj le 1 -& E2r Stjie 2 3 52-4 Tabes,S^CentersFIG. 18. which case the elongation shall be measured in the lengthequal to eight times the diameter of section tested. Fourcoupon pieces shall be taken from each melt of finished ma-terial, two for tension and two for bending. Material, which is to be used without annealing or furthertreatment, is to be tested in t
Laying out for boiler makers and sheet metal workers; a practical treatise on the layout of boilers, stacks, tanks, pipes, elbows, and miscellaneous sheet metal work . 74-3 Tabos, i-,. Ci;ntersFIG. 16. 61-3« Tulji;s, iX Centers FIG. Stj le 1 -& E2r Stjie 2 3 52-4 Tabes,S^CentersFIG. 18. which case the elongation shall be measured in the lengthequal to eight times the diameter of section tested. Fourcoupon pieces shall be taken from each melt of finished ma-terial, two for tension and two for bending. Material, which is to be used without annealing or furthertreatment, is to be tested in the condition in which it comesfrom the rolls. When material is to be annealed, or otherwisetreated, before use, the specimen representing such materialis to be similarly treated before testing. Every finished pieceof steel shall be stamped with the melt number. All platesshall be free from surface defects, and to have a workman-like finish. Each boiler inspection and insurance company has its ownspecifications for the material which is used in boilers builtaccording to its rules. These are all of the same generaltliaracter as the set already quoted. 3- FIG. 19. feature, as it permits of inside inspection as well as permitting
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Keywords: ., bookcentury1900, bookdecade1900, bookidl, booksubjectsteamboilers
