# Book of Standards

National tube Company, 1913 - 553 σελίδες

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### Περιεχόμενα

 All Weights and Dimensions are Nominal 25 652 33 OOOO OO OO 174
 ordered 487 Πνευματικά δικαιώματα

### Δημοφιλή αποσπάσματα

Σελίδα 36 - The permissible variation in weight is 5 per cent above and 5 per cent below. Furnished with threads and couplings and in random lengths unless otherwise ordered.
Σελίδα 484 - CHAIN TONGS.— A pipe-fitter's tool; a lever with a serrated end provided with a chain to enlace the pipe. The chain is wrapped around the pipe to hold the lever in place, and the teeth on the end of the latter grip into the pipe, thus affording a powerful leverage to screw or unscrew the joints.
Σελίδα 460 - System. The fundamental unit of the metric system is the METER — the unit of length. From this the units of capacity (LITER) and of weight (GRAM) were derived.
Σελίδα 312 - The following is a list of convenient equivalents for use in hydraulic computations : 1 second-foot equals 40 California miner's inches (law of March 23, 1901). 1 second-foot equals 38.4 Colorado miner's inches. 1 second-foot equals 40 Arizona miner's inches. 1 second-foot equals 7.48 United States gallons per second; equals 448.8 gallons per minute; equals 646,272 gallons for one day. 1 second-foot equals 6.23 British imperial gallons per second. 1 second-foot for one year covers 1 square mile 1.131...
Σελίδα 253 - The bending moment at any section of a beam is equal to the algebraic sum of the moments of the forces on either side of the section.
Σελίδα 320 - Mariotte.s law states that the volume of a gas varies inversely with the pressure to which it is subjected.
Σελίδα 460 - Measures of Weight 10 milligrams (mg) =1 centigram eg 10 centigrams =1 decigram dg 10 decigrams =1 gram g 10 grams =1 dekagram Dg 10 dekagrams =1 hektogram Hg 10 hektograms =1 kilogram Kg...
Σελίδα 510 - Wye; Y. A fitting either cast or wrought that has one side outlet at any angle other than 90°. Usually set 45", and always so set unless angle is specified. It is usually indicated by letter Y.
Σελίδα 499 - Packing. — (1) A general term relating to yielding material employed to effect a tight joint. A common example is the sheet rubber used for gaskets. The term is also applied to the braided hemp or metallic rings used in some joints, that allow considerable or incessant motion. The British grummet is another example.
Σελίδα 96 - The tensile strength, limit of elasticity, and ductility shall be determined from a standard test piece cut from the finished material. The standard shape of the...