The best Side of bar 178

The best Side of bar 178

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(three) The letters “United states” need to be employed to indicate the Point out authorizing the allocation on the specification marks In the event the packaging is created in the United States.

Welding or brazing of any attachment or opening to your heads of cylinders is permitted offered the carbon information with the steel won't exceed 0.twenty five percent besides in the case of 4130 × steel, which may be applied with appropriate welding process.

(vi) Effects take a look at specimens needs to be cooled to the look services temperature. The apparatus for tests the specimens need to conform to specifications of ASTM Normal E 23. The take a look at piece, in addition to the handling tongs, should be cooled for the amount of time enough to reach the assistance temperature.

Cylinders must be produced by very best appliances and approaches. No defect is permitted that is probably going to weaken the finished cylinder appreciably. A reasonably clean and uniform surface finish is necessary. The thickness of the spun base is, beneath no issue, to get below two moments the minimal wall thickness of the cylindrical shell; this kind of base thickness should be calculated within just a place bounded by a line symbolizing the factors of Get hold here of amongst the cylinder and flooring in the event the cylinder is in a vertical placement.

At or prior to the time of delivery to the purchaser, the cylinder maker will need to have all done certification paperwork mentioned in CGA C-11. The manufacturer of the cylinders ought to keep the stories needed by this subpart for 15 yrs from the first take a look at day of your cylinder.

(iii) For the objective of strain measurement, the Original strain have to be set even though the specimen is beneath a strain of twelve,000 psig along with the pressure indicator reading has to be set within the calculated corresponding pressure.

(2) The size of any centered opening in a head may not exceed a single fifty percent the surface diameter with the cylinder.

(a) By appliances and techniques that will guarantee uniformity of completed containers; Filth and scale to be taken out as vital; no defect satisfactory that is probably going to weaken the finished container appreciably; fairly sleek and uniform surface end required.

One cylinder taken at random out of every great deal of 200 or considerably less, needs to be subjected to some flattening test as follows:

The eCFR is exhibited with paragraphs split and indented to Keep to the hierarchy in the doc. This really is an automatic method for consumer comfort only and is not intended to change agency intent or current codification.

Cylinders must be made using equipment and procedures adequate making sure that Every single cylinder produced conforms to the requirements of this subpart. No defect is permitted that is probably going to weaken the completed cylinder appreciably, a fairly sleek and uniform area end is required.

(ii) Just one cylinder must be chosen from Each individual great deal and become hydrostatically tension examined to destruction. If this cylinder bursts beneath five (five) times the service tension, then two added cylinders through the same lot since the Formerly examined cylinder need to be picked and subjected to this exam.

Material should be recognized by any ideal process other than that plates and billets for hotdrawn cylinders need to be marked with the warmth range.