Not known Facts About bar 178
Not known Facts About bar 178
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(iii) When dimension of your cylinder will not allow securing straight specimens, the specimens might be taken in almost any location or course and will be straightened or flattened chilly by pressure only, not by blows.
A physical examination need to be conducted to determine generate power, tensile toughness, elongation, and reduction of region of material as follows:
A root bend check specimen should be Slash within the cylinder or welded take a look at plate, utilized for the tensile check laid out in paragraph (n)(1) of the part. Specimens has to be well prepared and tested in accordance with and ought to satisfy the requirements of CGA Pamphlet C-three.
(two) Cylindrical sort cylinder models needs to be of circumferentially welded or brazed construction; longitudinally brazed or silver-soldered seams may also be permitted.
Longitudinal seams should be a forged lap joint structure. When brazed, the plate edge need to be lapped at the very least eight (8) instances the thickness of your plate, laps staying held in placement, substantially steel to metallic, by riveting or electrical spot-welding; brazing needs to be accomplished by making use of an appropriate flux and by putting brazing material on a person aspect of seam and making use of warmth right up until this materials reveals uniformly alongside the seam of the other facet.
(one) Pressure, roughly the same as but not below assistance tension, have to be placed on just one facet of your concluded base over a place of no less than one⁄sixteen of the overall space of The underside but not lower than 3⁄4 inch in diameter, including the closure, for at least one minute, in the course of which period another side of the bottom subjected to tension needs to be protected with water and intently examined for indications of leakage.
(2) Thickness of your cylinder base will not be less than the prescribed bare minimum wall thickness of your cylindrical shell. The cylinder foundation needs to have a simple torispherical, hemispherical, or ellipsoidal inside foundation configuration where the dish radius is no increased than 1.
(one) Welding or brazing is authorized for that attachment of neckrings and footrings that are non-force parts, and only on the tops and bottoms of cylinders aquiring a provider tension of 500 psig or significantly less.
Heads attached by brazing must have a driving healthy with the shell, Except the shell is crimped, swedged, or curled in excess of the skirt or flange of the head, and become completely brazed right until full penetration via the brazing content of the brazed joint is secured. Depth of brazing with the joint should be at the very least 4 (four) situations the minimal thickness of shell metallic.
All spun cylinders and plugged cylinders has to be analyzed for leakage by fuel or air stress after The underside continues to be cleaned and is particularly cost-free from all moisture subject matter to the following ailments and constraints:
(1) Marking on Just about every cylinder needs to be stamped plainly and permanently on or near the shoulder, prime head, neck or valve security collar which can be completely hooked up to the cylinder and forming integral element thereof.
(ii) The specimen, distinctive more info of grip ends, will not be flattened. Grip ends may very well be flattened to in one inch of every end on the lowered section. Heating on the specimen for any function isn't approved.
Cylinders with bottoms closed in by spinning have to be subjected to the leakage take a look at by setting the interior air or gasoline stress not to lower than the assistance stress. Cylinders which leak needs to be rejected.
(ii) The filling material must be uniform in good quality and freed from voids, other than that a very well drilled into your filling product beneath the valve is licensed Should the well is filled with a cloth of such kind that the functions of the filling product are not impaired;