situs bar178 - An Overview
situs bar178 - An Overview
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(1) No defect is permitted that is likely to weaken the completed cylinder appreciably. A reasonably sleek and uniform floor end is necessary. The shell portion must be a fairly accurate cylinder.
Product have to be determined by any suitable system apart from that plates and billets For warm-drawn cylinders has to be marked with the warmth quantity.
(3) A plugged cylinder is one where a lasting closure in the bottom of a concluded cylinder continues to be effected by a plug.
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After the hydrostatic test, the cylindrical segment of every vessel need to be examined in accordance with ASTM E 213 for shear wave and E 114 for straight beam (IBR, Regular see
(i) The remaining cylinders in Just about every lot need to be analyzed through the proof strain h2o-jacket or direct expansion exam technique as prescribed in CGA C-1. The minimum take a look at force need to be managed for the particular timeframe as well as the testing devices should be calibrated as prescribed in CGA C-one.
(a) Every container have to be made by thermoplastic procedures that will assure uniformity of the finished container. No utilized product other than production residues or regrind in the very same manufacturing method can be applied.
(1) Each cylinder has to be uniformly and appropriately heat taken care of previous to take a look at by the relevant system referenced in desk 1 of appendix A to this part. Heat remedy must be completed In the end forming and welding operations, except that when brazed joints are used, warmth therapy must abide by any forming and welding operations, but could be carried out prior to, during or once the brazing functions (see paragraph (n) of this part for weld repairs).
(2) The scale of any centered opening in a head may well not exceed just one half the skin diameter in the cylinder.
The least wall thickness has to be such which the wall strain with the least specified take a look at force isn't going to exceed sixty seven p.c in the minimum amount tensile power on the steel as determined by the physical assessments demanded in paragraphs (j) and (k) of this section.
(iv) A brass fitting could possibly be brazed to the metal manager or flange on cylinders employed as part aspects of handheld fire extinguishers.
Each and every cylinder, ahead of insulating and jacketing, should correctly stand up to a strain test as follows:
(iii) The minimal exam tension need to be taken care of at the least thirty seconds and adequately extended to be sure full growth. Any interior stress applied just after heat-cure and prior to the Formal test may well not exceed ninety per cent of the check strain.
(iii) For the objective of strain measurement, the Preliminary strain reference has to be set though the specimen is beneath a worry of get more info 12,000 psi as well as pressure indicator looking through becoming established on the calculated corresponding strain.