(ii) Taper threads to become of size not lower than as specified for American Regular taper pipe threads.
(iii) For the objective of strain measurement, the Preliminary strain have to be established while the specimen is beneath a anxiety of 12,000 psi along with the pressure indicator reading through staying set with the calculated corresponding pressure.
(three) A plugged cylinder is a person through which a long-lasting closure in the bottom of a completed cylinder has long been effected by a plug.
This check may be used and have to be as necessary by CGA C-three. The specimen should be bent right up until the elongation for the outer surface area, adjacent to the basis in the weld, amongst the lightly scribed gauge traces a to b, should be at least twenty per cent, except that this percentage may very well be lessened for steels possessing a tensile strength in excess of fifty,000 psig, as delivered in paragraph (k) of this area.
(ii) Circumferential seams need to be made by welding or by brazing. Heads connected by brazing will need to have a driving healthy Using the shell Except if the shell is crimped, swedged, or curled around the skirt or flange of The top and needs to be extensively brazed until finally full penetration by the brazing materials of the brazed joint is secured. Depth of brazing from stop on the shell has to be a minimum of four (4) periods the thickness of shell metal.
(1) A Actual physical take a look at to get a sphere is required on two specimens Minimize from the flat representative sample plate of the exact same heat taken at random through the steel used to make the sphere.
(iii) The minimal take a look at stress need to be managed at the least thirty seconds and adequately lengthier to ensure comprehensive enlargement. Any internal strain utilized soon after warmth-remedy and before the Formal exam may not exceed 90 percent of your exam strain.
(a) By appliances and solutions that could guarantee uniformity of finished containers; Dust and scale to become taken out as vital; no defect suitable that is probably going to weaken the completed container appreciably; reasonably clean and uniform surface complete essential.
Specimens taken through the circumferentially welded seam has to be Minimize from one cylinder taken at random from each lots of two hundred or a lot less cylinders soon after warmth treatment method and should pass satisfactorily the following exams:
(1) The steel Employed in the construction on the cylinder need to be as laid out in table one of appendix A to this section. The cylinder company have to sustain a document of deliberately additional alloying elements.
(iv) A brass fitting could be brazed on the metal manager or flange on cylinders used as component areas of handheld hearth extinguishers.
(ii) The specimen, unique of grip ends, will not be flattened. Grip finishes might be click here flattened to inside of one inch of each and every conclude from the lessened segment. Heating of the specimen for almost any reason just isn't authorized.
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(2) The heads must be seamless, concave aspect towards the pressure, hemispherical or ellipsoidal in condition with the major diameter not more than 2 times the minor diameter.
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