(iii) When size of cylinder does not permit securing straight specimens, the specimens might be taken in any spot or course and could be straightened or flattened chilly, by pressure only, not by blows.
Mechanical exams needs to be executed to determine generate energy, tensile toughness, elongation being a share, and reduction of location of material being a share, as follows:
(three) A plugged cylinder is a person by which a everlasting closure in The underside of a finished cylinder has long been effected by a plug.
Marking on Each and every container by stamping plainly and completely are only authorized exactly where the steel is not less than 0.09 inch thick, or over a steel nameplate permanently secured on the container by signifies other than smooth solder, or by suggests that may not decrease the wall thickness.
Cylinders needs to be produced applying devices and procedures suitable to make certain Just about every cylinder made conforms to the requirements of this subpart. No fissure or other defects is permitted that is likely to weaken the finished cylinder appreciably. A reasonably smooth and uniform floor finish is needed. If not originally totally free from these defects, the area could possibly be machined or or else treated to remove these defects.
The eCFR is exhibited with paragraphs break up and indented to Keep to the hierarchy from the document. This really is an automated method for user ease only and is not intended to alter agency intent or present codification.
(ii) The take a look at has to be involving parallel steel plates on a press that has a welded seam at appropriate angles to the plates. Any projecting appurtenances might be cut off (by mechanical indicates only) before crushing.
All spun cylinders and plugged cylinders needs to be tested for leakage by gas or air strain just after The underside has long been cleaned and is also no cost from all moisture, matter to the following circumstances:
Cylinders should be produced utilizing machines and procedures enough to make certain that Each individual cylinder created conforms to the requirements of the subpart. No defect is permitted that is likely to weaken the concluded cylinder appreciably.
The minimum wall thickness needs to be these the wall anxiety within the minimum amount specified take a look at pressure won't exceed sixty seven % of the minimal tensile power of the steel check here as based on the Bodily assessments demanded in paragraphs (j) and (k) of this section.
(iii) With a cylindrical percentage of the shell that extends further than the recessed bottom from the cylinder constituting an integral and non-stress part of the cylinder.
Reheat treatment method of rejected cylinders is licensed. Subsequent thereto, cylinders ought to move all prescribed tests to generally be suitable. Mend by welding or spinning is just not authorized.
(iii) Over a cylindrical percentage of the shell that extends over and above the recessed base of the cylinder, constituting an integral and non-strain Element of the cylinder;
Reheat therapy of turned down cylinder is licensed. Subsequent thereto, cylinders must go all prescribed tests to get suitable. Mend by welding is approved.