A person sphere taken at random out of each and every number of 200 or considerably less needs to be subjected to some flattening take a look at as follows:

(1) A tension, somewhere around similar to but not less than the company force, has to be applied to a person aspect in the finished base about a place of at least one⁄16 of the total place of the bottom although not a lot less than 3⁄four inch in diameter, including the closure, for a minimum of just one minute, through which period the other facet of the bottom subjected to stress must be protected with water and intently examined for indications of leakage.

The restricting chemical composition of steel licensed by this specification should be as demonstrated in table I of appendix A to this portion.

Welding or brazing for almost any function by any means is prohibited, other than that welding by spinning is permitted to shut The underside of spun cylinders. Machining or grinding to create suitable surface area finish at point of closure is required.

(1) For spheres the exam need to be with the weld in between parallel metal plates over a press with welded seam at right angles to your plates.

(i) The remaining cylinders in Each and every lot need to be tested via the proof tension water-jacket or immediate expansion take a look at technique as prescribed in CGA C-one. The minimal take a look at pressure have to be maintained for the particular timeframe and the screening equipment have to be calibrated as prescribed in CGA C-one.

The steel used in the development of your cylinder needs to be as laid out in get more info desk 1 of appendix A to this component. The cylinder manufacturer will have to manage a report of deliberately additional alloying components.

Cylinders needs to be manufactured making use of products and procedures enough to ensure that Every cylinder made conforms to the necessities of this subpart. No fissure or other defect is permitted that is likely to weaken the completed cylinder appreciably. A fairly clean and uniform floor end is needed. Otherwise initially cost-free from these defects, the area may be machined or or else handled to eradicate these defects.

(one) Every single stress specimen must have a gauge duration of two inches by using a width not exceeding 1 and one-half inches. Aside from the grip finishes, the specimen might not be flattened. The grip ends may very well be flattened to within just one particular inch of each end with the diminished segment.

Reheat cure is authorized for rejected cylinders. Even so, Every reheat dealt with cylinder must subsequently pass the many prescribed tests. Mend by welding is not really authorized.

Inspection must be done on the inside of every container prior to closing and externally on Just about every finished container just after heat cure.

(one) Strain, close to the same as but no below service strain, needs to be applied to just one side in the concluded base above a region of a minimum of 1⁄16 of the full region of The underside although not less than 3⁄4 inch in diameter, such as the closure, for a minimum of one minute, in the course of which era one other side of the bottom exposed to strain need to be covered with water and carefully examined for indications of leakage. Other than as delivered in paragraph (n) of the section, a cylinder which is leaking have to be turned down.

(three) A plugged cylinder is a single by which a permanent closure in The underside of the finished cylinder has been effected by a plug.

(two) If the porosity of each and every cylinder is not really known, a cylinder taken at random from lots of 200 or much less has to be examined for porosity. In the event the examination cylinder fails, Every single cylinder from the ton can be analyzed separately and those cylinders that move the check are satisfactory.