(iii) Make copies of all prepared notifications accessible for inspection by a representative of your Office.
A Actual physical test needs to be carried out to find out generate strength, tensile power, elongation, and reduction of region of fabric as follows:
(3) When each cylinder is tested to your bare minimum examination tension, the bare minimum take a look at force has to be maintained no less than 30 seconds and adequately for a longer time to make certain comprehensive expansion. Any internal pressure applied after heat-remedy and previous into the official check might not exceed ninety percent from the test stress.
(i) Just one specimen have to be taken longitudinally from the human body part not less than ninety levels far from the weld.
Product must be identified by any suited method besides that plates and billets for hotdrawn cylinders needs to be marked with the warmth number.
(iii) Long term volumetric enlargement may not exceed 10 percent of whole volumetric growth at check force.
(b) A UN conventional packaging for which the UN regular is ready forth With this section might be marked While using the United Nations image and various specification markings provided that it completely conforms to the necessities of the component.
Reheat treatment method of rejected cylinders is authorized. Subsequent thereto, cylinders ought to move all prescribed tests for being suitable. Repair by welding is licensed.
(i) Assuming the cylinder is always to be supported horizontally at its two ends only also to be uniformly loaded around its entire size consisting of the weight for every device of size of your straight cylindrical part filled with water and compressed to the desired exam stress; the sum of two instances the utmost tensile stress in The underside fibers as a consequence of bending, as well as that in a similar fibers (longitudinal pressure), as a result of hydrostatic test might not exceed eighty percent of your minimal yield strength in the metal at such maximum anxiety. Wall thickness need to be greater when required to fulfill the need.
A root bend take a look at specimen need to be removed from the cylinder or welded exam plate employed for the tensile test laid out in paragraph (m)(one) of this segment. Specimens must be taken from throughout the longitudinal seam and needs to be ready and examined in conformance with the requirements of CGA C-3.
(vii) The influence Homes of every list of impact specimens may not be less than the values in the following table:
Reheat cure of rejected cylinders is approved. Subsequent thereto, cylinders need to pass all prescribed exams for being acceptable. Repair by welding or spinning is not really approved.
Markings on Every cylinder needs to be by stamping plainly and permanently on shoulder, leading head, neck or valve protection collar and that is completely connected to your cylinders and forming an integral component thereof, offered that cylinders not below 0.090 inch thick may very well be stamped over the aspect wall adjacent to prime head.
Testing is necessary on two (2) specimens faraway from a person cylinder or component thereof taken at random out of each and every great deal of two hundred or less. Samples must be removed check here immediately after heat cure as illustrated in appendix A to this subpart.