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Cylinders need to be made employing machines and processes sufficient in order that Every single cylinder made conforms to the requirements of the subpart. No defect is permitted that is probably going to weaken the finished container appreciably.

(two) A spun cylinder is one particular during which an conclusion closure within the completed cylinder continues to be welded via the spinning approach.

(one) Every rigidity specimen must have a gauge size of two inches by using a width not exceeding just one and 1-50 % inches. Aside from the grip finishes, the specimen might not be flattened. The grip finishes could be flattened to inside of 1 inch of each and every close on the lowered area.

One particular cylinder taken at random out of each and every lots of 200 or much less, must be subjected to your flattening check as follows:

This check might be employed and needs to be as demanded by CGA Pamphlet C-3. The specimen must be bent right until the elongation with the outer surface, adjacent to the basis of the weld, amongst the frivolously scribed gage traces-a to b, have to be a minimum of 20 p.c, apart from this percentage could be reduced for steels aquiring a tensile power in excess of fifty,000 psi, as delivered in paragraph (m) of this part.

(iii) When sizing on the cylinder would not allow securing straight specimens, the specimens might be taken in any area or route and may be straightened or flattened cold, by tension only, not by blows.

Benefits of your flattening check, Bodily tests, burst test, and biking exam will have to conform to the next:

All spun cylinders and plugged cylinders need to be analyzed for leakage by gas or air strain after The underside continues to be cleaned and is also absolutely free from all humidity subject matter to the next ailments and limitations:

Specimens taken across the circumferentially welded seam need to be Lower from just one cylinder taken at random from Just about every number of two hundred or much less cylinders after heat therapy and have to go satisfactorily the subsequent tests:

(two) In the event the porosity of each cylinder will not be known, a cylinder taken at random from many two hundred or significantly less has to be analyzed for porosity. In case the exam cylinder fails, Just about every cylinder while in the great deal could be examined individually and people cylinders that pass the test are appropriate.

This portion prescribes the producing and screening requirements for packaging and containers employed for the transportation of hazardous elements in commerce.

Prior to the Preliminary cargo of any certain cylinder layout, cyclic pressurization tests ought to are actually done on no less than three agent samples without failure as follows:

(six) Other markings are licensed delivered They may be created in lower strain spots aside from the side wall and so are not of the size and depth that will build dangerous anxiety concentrations. These marks may well not conflict with any DOT needed markings.

(iii) The bare minimum test force need to be preserved at the least 30 seconds and adequately for a longer period to guarantee full growth. Any interior force utilized following heat-procedure and before the Formal here check may not exceed ninety % on the examination stress.