An Unbiased View of bar 178

Reheat cure is approved for turned down cylinders. Subsequent thereto, cylinders must go all prescribed tests to get appropriate. Mend by welding or spinning isn't licensed.

(4) As a safety precaution, Should the company elects to make this exam prior to the hydrostatic take a look at, the maker should layout the check apparatus so which the strain is placed on the smallest space practicable, around the issue of closure, and in order to utilize the smallest feasible quantity of air or fuel.

(one) During this specification, a “lot” suggests a gaggle of cylinders successively manufactured owning precisely the same:

(2) Thickness in the cylinder foundation will not be less than the prescribed least wall thickness of the cylindrical shell. The cylinder base will need to have a fundamental torispherical, hemispherical, or ellipsoidal inside base configuration where by the dish radius isn't any larger than 1.

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A root bend exam specimen needs to be removed from the cylinder or welded take a look at plate used for the tensile check laid out in paragraph (m)(1) of the area. Specimens must be taken from throughout the longitudinal seam and have to be geared up and analyzed in conformance with the requirements of CGA C-three.

Every cylinder needs to be uniformly and adequately heat addressed, before assessments, by any appropriate strategy in excessive of 1100 °F. Warmth cure must be completed In spite of everything forming and welding operations, besides that when brazed joints are employed, warmth remedy should abide by any forming and welding operations but might be accomplished before, all through, or following the brazing operations. Liquid quenching will not be authorized.

(two) All functions performed by, or on behalf of, the individual whose identify or symbol appears as Portion of the marking conform to requirements specified in this section.

(1) Marking on Every single cylinder must be stamped plainly and permanently on or near the shoulder, major head, neck or valve protection collar which happens to be forever hooked up to your cylinder and forming integral element thereof.

(iii) When sizing of your cylinder does not permit securing straight specimens, the specimens could be taken in any locale or path and should be straightened or flattened chilly, by strain only, not by blows.

(iii) The minimum amount take a look at strain should be maintained be managed no less than 30 seconds and sufficiently for a longer time to be certain finish enlargement. Any inside stress used soon after heat-remedy and before the official test may well not exceed ninety % of your take a look at stress.

(two) A company of a packaging topic to the necessities of this component is mostly responsible for compliance with the necessities of this section. Even so, any get more info person who performs a purpose prescribed On this section shall accomplish that operate in accordance using this component.

(iii) When dimensions of cylinder doesn't allow securing straight specimens, the specimens may be taken in almost any location or route and could be straightened or flattened chilly, by tension only, not by blows.

(iv) A brass fitting could possibly be brazed on the steel manager or flange on cylinders applied as element elements of handheld fire extinguishers.