(iii) The minimum amount test stress should be maintained at the least 30 seconds and adequately longer to make sure entire expansion. Any interior stress used after heat-cure and prior to the official check may well not exceed 90 p.c from the take a look at pressure.
(iii) The minimal check stress have to be preserved a minimum of thirty seconds and adequately extended to ensure entire expansion. Any interior tension used immediately after heat-procedure and before the Formal exam may not exceed 90 per cent on the test stress.
(three) A plugged cylinder is one in which a long lasting closure in the bottom of a finished cylinder continues to be effected by a plug.
(2) Thickness with the cylinder foundation will not be fewer than the prescribed minimum wall thickness in the cylindrical shell. The cylinder foundation need to have a basic torispherical, hemispherical, or ellipsoidal interior foundation configuration wherever the dish radius is not any greater than 1.
Marking should be accomplished by stamping in the steel with the cylinder. All markings should be legible and located on the shoulder.
A root bend exam specimen should be removed from the cylinder or welded examination plate used for the tensile exam laid out in paragraph (m)(1) of the portion. Specimens needs to be taken from over the longitudinal seam and have to be ready and tested in conformance more info with the requirements of CGA C-3.
The minimum wall thickness must be these kinds of the wall anxiety with the bare minimum specified check tension will not exceed 80 p.c in the minimal produce strength nor exceed sixty seven percent of the minimal best tensile power as confirmed by Bodily exams in paragraph (i) of this segment.
(i) The porous substance may not disintegrate or sag when moist with solvent or when subjected to standard company;
The finished cylinders has to be uniformly and thoroughly warmth dealt with just before exams. Heat treatment of cylinders of the approved analyses must be as follows:
Reheat cure is approved for turned down cylinders. Even so, Each individual reheat handled cylinder ought to subsequently go all of the prescribed assessments. Repair service by welding just isn't licensed.
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(1) The steel Utilized in the development from the cylinder need to be as laid out in table 1 of appendix A to this portion. The cylinder producer have to maintain a document of deliberately included alloying factors.
(ii) Taper threads need to be of a duration not below that specified for American Regular taper pipe threads.
1 cylinder taken at random out of each lots of cylinders need to be hydrostatically analyzed to destruction.