(ii) Taper threads for being of size not less than as specified for American Common taper pipe threads.
Stress-retaining resources have to be determined by any suited process that does not compromise the integrity in the cylinder. Plates and billets for hotdrawn cylinders has to be marked with the heat number.
A root bend check specimen has to be Lower through the cylinder or welded examination plate, useful for the tensile take a look at specified in paragraph (n)(one) of this section. Specimens need to be prepared and analyzed in accordance with and need to satisfy the requirements of CGA Pamphlet C-three.
Cylinders needs to be made employing devices and procedures ample in order that Every cylinder made conforms to the requirements of this subpart. No defect is permitted that is probably going to weaken the completed cylinder appreciably.
(iii) Straight threads need to have at least four engaged threads, limited fit and calculated shear toughness at least ten times the test pressure with the cylinder. Gaskets, which reduce leakage and they are inert into the harmful materials, are necessary.
(i) The remaining cylinders in Each and every lot has to be analyzed because of the evidence tension h2o-jacket or immediate growth examination strategy as prescribed in CGA C-1. The minimum amount take a look at pressure must be managed for the particular timeframe as more info well as tests machines need to be calibrated as prescribed in CGA C-one.
(four) All cylinders must be inspected from the magnetic particle or dye penetrant method to detect the existence of quenching cracks. Any cylinder located to possess a quenching crack need to be turned down and might not be requalified.
(iv) On a plate attached to the top with the cylinder or long-lasting aspect thereof; ample Place must be still left over the plate to deliver for stamping at the least six retest dates; the plate must be a minimum of one⁄16-inch thick and has to be hooked up by welding at a temperature of 1,100 °File, in the course of all edges from the plate.
(iii) For the objective of strain measurement, the First pressure need to be set though the specimen is under a strain of 12,000 psi, along with the strain indicator reading through has to be set on the calculated corresponding pressure.
Material must be identified by any acceptable process apart from that plates and billets For decent-drawn cylinders have to be marked with the heat quantity.
A specimen must be cut from one cylinder of every lots of 200 or a lot less, or welded examination plate. The specimen must be taken from over the main seam and should be well prepared and analyzed in accordance with and need to meet the requirements of CGA Pamphlet C-3.
S = Mc/I (iii) To estimate the utmost longitudinal tensile pressure because of hydrostatic check stress, the following formula should be utilized:
(1) When the cylinders are heat handled inside of a batch furnace, two pressure specimens and three Charpy influence specimens need to be examined from one of several cylinders or maybe a examination ring from Every batch. The lot dimensions represented by these exams may well not exceed 200 cylinders.
One particular container taken at random away from 200 or considerably less needs to be hydrostatically examined to destruction. Rupture force should be involved as Element of the inspector's report.