The attachment for the tops and bottoms only of cylinders by welding of neckrings, footrings, handles, bosses, pads and valve safety rings is licensed furnished that this sort of attachments as well as percentage of the container to which They may be connected are made of weldable metal, the carbon content of which can not exceed 0.25 percent.

(iii) When measurement of your cylinder isn't going to allow securing straight specimens, the specimens could possibly be taken in almost any area or path and will be straightened or flattened cold, by force only, not by blows.

(three) A plugged cylinder is just one in which a long-lasting closure in The underside of a concluded cylinder has actually been effected by a plug.

This check may very well be utilised and need to be as demanded by CGA C-three. The specimen have to be bent until the elongation for the outer area, adjacent to the foundation in the weld, in between the frivolously scribed gauge traces a to b, have to be a minimum of twenty per cent, besides this percentage could be reduced for steels using a tensile strength in extra of fifty,000 psig, as offered in paragraph (k) of this portion.

Radiographic examinations is needed on all welded joints which might be subjected to inside tension, apart from that within the discretion in the disinterested inspector, openings lower than 25 per cent in the sphere diameter need not be subjected to radiographic inspection. Proof of any defects prone to significantly weaken the container needs to be trigger for rejection.

The eCFR is shown with paragraphs break up and indented to follow the hierarchy on the doc. This is often an automated system for consumer benefit only and is not meant to change company intent or present codification.

(a) Just about every container need to be manufactured by thermoplastic processes that will assure uniformity of the finished container. No made use of materials besides manufacturing residues or regrind from the same producing approach may be applied.

Radiographic inspection is required on all welded joints which might be subjected to inside stress, other than that within the discretion of your disinterested inspector, openings fewer than 25 % of your container diameter need not be subjected to radiographic inspection.

(ii) In using the “extension underneath load” strategy, the full pressure (or “extension underneath load”) similar to the strain at which the 0.2-% permanent strain happens could be established with adequate accuracy by calculating the elastic extension with the gauge duration under ideal load and incorporating thereto 0.

(one) Each cylinder should be heated and held at the proper temperature for at least a single hour per inch of thickness according to the most thickness in the cylinder then quenched in a suitable liquid medium using a cooling charge not in extra of eighty per cent of drinking water.

Cylinders have to be produced making use of devices and processes sufficient in order that Every cylinder generated conforms to the necessities of this subpart. No defect is permitted that is likely to weaken the concluded cylinder appreciably.

Content has to be identified by any ideal technique other than that plates and billets For decent-drawn cylinders should be marked with heat amount.

(i) A gauge size of not less than 24 instances the thickness which has a width not more than six occasions the thickness. The specimen, special of grip finishes, may not be flattened. Grip finishes may be flattened to within a single inch of each close with the minimized part. When sizing of cylinder does not allow securing straight specimens, the specimens could possibly be taken in almost any area or route and could be straightened or flattened cold by pressure only, not by blows.

(six) Intermediate manganese steels could possibly be tempered at temperatures not lower than 1150 °F., and soon after heat dealing with each cylinder should be submitted to a magnetic more info test to detect the existence of quenching cracks. Cracked cylinders have to be rejected and wrecked.