Reheat cure is approved for rejected cylinders. Even so, Every reheat addressed cylinder ought to subsequently go many of the prescribed checks. Mend by welding just isn't licensed.
(d) No particular person may perhaps mark or if not certify a packaging or container as meeting the necessities of a production Specific allow Except if that person will be the holder of or a party to that special permit, an agent of your holder or party for the goal of marking or certification, or possibly a 3rd party tester.
Tension-retaining materials have to be recognized by any suited method that doesn't compromise the integrity in the cylinder. Plates and billets for hotdrawn cylinders should be marked with the heat range.
Normal taper pipe threads necessary in all openings. The length from the opening might not be under as specified for American Typical pipe threads; tapped to gauge; cleanse Reduce, even, and with no checks.
Longitudinal seams need to be a solid lap joint style and design. When brazed, the plate edge needs to be lapped no less than 8 (eight) periods the thickness of your plate, laps becoming held in place, significantly metallic to metallic, by riveting or electrical location-welding; brazing has to be carried out by making use of an acceptable flux and by inserting brazing material on 1 side of seam and applying heat until this content shows uniformly along the seam of one other aspect.
Product must be identified by any suited process apart from that plates and billets for hotdrawn cylinders has to be marked with the warmth range.
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Reheat cure of rejected cylinders is licensed. Subsequent thereto, cylinders need to move all prescribed tests to be suitable. Maintenance of welded seams by welding is authorized.
(four) Should the cylinder surface will not be originally no cost from your defects, the surface can be machined or or else handled to remove these defects furnished the minimal wall thickness is managed.
A root bend examination here specimen should be faraway from the cylinder or welded test plate employed for the tensile examination specified in paragraph (m)(one) of this part. Specimens needs to be taken from through the longitudinal seam and should be prepared and analyzed in conformance with the requirements of CGA C-three.
(one) Welding or brazing is approved for that attachment of neckrings and footrings which are non-stress areas, and only on the tops and bottoms of cylinders using a assistance force of five hundred psig or fewer.
(one) Cylinders must be marked by lower tension style steel stamping in a region and to a depth which will insure which the wall thickness measured through the root from the stamping to the inside area is equivalent to or bigger when compared to the minimum prescribed wall thickness. Stamping should be everlasting and legible. Stamping on side wall not licensed.
(iii) The minimal check stress needs to be taken care of no less than 30 seconds and sufficiently for a longer period to make sure finish growth. Any inside pressure applied soon after heat-therapy and before the official examination may well not exceed ninety per cent of the examination force.
(iii) The minimum examination pressure need to be taken care of no less than thirty seconds and adequately longer to be sure complete enlargement. Any internal pressure applied right after heat-remedy and previous to the official check may not exceed ninety per cent on the examination strain.
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