(ii) Taper threads have to be of the length not a lot less than that specified for American Normal taper pipe threads.
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(3) When each cylinder is examined to the least test stress, the minimum amount examination stress needs to be managed not less than thirty seconds and adequately extended to be sure entire enlargement. Any interior tension utilized after warmth-treatment method and previous to the official test may not exceed ninety percent from the take a look at strain.
Marking on Each and every container by stamping plainly and permanently are only authorized exactly where the steel is at the least 0.09 inch thick, or with a metal nameplate forever secured on the container by usually means besides delicate solder, or by indicates that may not lessen the wall thickness.
(i) If the selected cylinder passes the h2o-jacket or direct expansion examination, the remaining cylinders in Every great deal needs to be stress tested through the proof strain water-jacket or immediate growth take a look at approach as prescribed in CGA C-1.
(5) All cylinders, if h2o quenched or quenched that has a liquid developing a cooling level in extra of 80 per cent from the cooling amount of water, needs to be inspected because of the magnetic particle or dye penetrant method to detect the presence of quenching cracks. Any cylinder identified to possess a quench crack have to be rejected and will not be requalified.
Reheat cure of rejected cylinders is approved. Subsequent thereto, cylinders need to go all prescribed assessments to be acceptable. Welds can be fixed by suitable methods of fusion welding.
Reheat cure is approved for the turned down cylinder in accordance using this paragraph (n). Soon after reheat remedy, a cylinder will have to move all prescribed tests During this section to be considered appropriate. Fix of brazed seams by brazing and welded seams by welding is licensed.
(iii) The bare minimum test force must be taken care of at least 30 seconds and adequately longer to ensure entire growth. Any internal strain utilized following heat-treatment and previous to the Formal check may not exceed ninety percent from the examination stress.
Welding or brazing for just about any function in anyway is prohibited, apart from that welding by spinning is permitted to close check here the bottom of spun cylinders. Machining or grinding to supply proper floor finish at place of closure is needed.
(ii) The check should be within the weld in between the parallel steel plates on the press with a welded seam, at ideal angles to your plates. Any projecting appurtenances might be Slice off (by mechanical implies only) previous to crushing.
(1) Cylinders should be marked by reduced tension variety steel stamping in a place and to a depth that may insure which the wall thickness calculated from the root in the stamping to the interior surface area is equal to or increased compared to the minimum amount prescribed wall thickness. Stamping needs to be long term and legible. Stamping on facet wall not approved.
(six) Other markings are approved presented These are manufactured in lower worry spots besides the side wall and so are not of the size and depth that will create hazardous tension concentrations. These kinds of marks may not conflict with any DOT expected markings.
(ii) A single cylinder need to be chosen from Every single whole lot and be hydrostatically tension examined to destruction. If this cylinder bursts underneath five (five) instances the assistance stress, then two further cylinders through the identical great deal given that the Formerly examined cylinder has to be chosen and subjected to this test.