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(ii) Taper threads has to be of a duration not below that specified for American Common taper pipe threads.

(ii) Verifying which the prescribed minimum thickness was fulfilled by measuring or witnessing the measurement of your wall thickness; and

(four) As a safety precaution, In case the company elects to create this check before the hydrostatic exam, the maker must style the test equipment so the pressure is placed on the smallest region practicable, around the position of closure, and so as to utilize the smallest achievable quantity of air or gasoline.

One cylinder taken at random out of each and every large amount of two hundred or less, has to be subjected to a flattening take a look at as follows:

A root bend test specimen has to be faraway from the cylinder or welded exam plate that was employed for the tensile exam specified in paragraph (l)(1) of this area. The specimen need to be taken from throughout the circumferential seam and has to be geared up and analyzed in conformance with and will have to meet the requirements of CGA C-3.

(2) Once the porosity of each cylinder isn't recognized, a cylinder taken at random from lots of 200 or a lot less must be tested for porosity. In case the take a look at cylinder fails, Just about every cylinder from the large amount may be analyzed separately and people cylinders that move the examination are satisfactory.

(three) A lot is described as a gaggle of cylinders fabricated from the similar heat of steel, manufactured by the same procedure and warmth addressed in the same equipment under the same conditions of your time, temperature, and environment, and could not exceed a amount of 200 cylinders.

(one) Every cylinder needs to be uniformly and properly warmth addressed before take a look at with the relevant process referenced in table one of appendix A to this section. Warmth remedy have to be completed All things considered forming and welding operations, besides that when brazed joints are utilised, heat treatment method need to follow any forming and welding operations, but may be carried out right before, for the duration of or after the brazing operations (see paragraph (n) of the segment for weld repairs).

Be aware 1: This designation will not be restrictive along with the industrial metal is proscribed in Evaluation as shown In this particular desk.

(2) In the event the porosity of each and every cylinder is not recognized, a cylinder taken at random from lots of 200 or significantly less have to be examined website for porosity. In case the examination cylinder fails, Every single cylinder while in the whole lot could possibly be analyzed independently and those cylinders that pass the test are appropriate.

The minimal wall thickness must be these that the wall worry with the minimum specified take a look at stress will likely not exceed 80 p.c of the least produce strength nor exceed sixty seven per cent in the minimal ultimate tensile toughness as verified by Actual physical assessments in paragraph (i) of this area.

(ii) In using the “extension underneath load” technique, the overall pressure (or “extension below load”) comparable to the stress at which the 0.2 per cent long-lasting strain happens may very well be determined with adequate precision by calculating the elastic extension of your gauge length below acceptable load and introducing thereto 0.

(ii) In using the “extension less than load” system, the entire pressure (or “extension below load”) corresponding to the pressure at which the 0.2 per cent long term pressure occurs could possibly be determined with enough accuracy by calculating the elastic extension on the gauge length beneath appropriate load and including thereto 0.

(1) The outcomes in the check need to conform to a minimum of the least acceptable mechanical house boundaries for aluminum alloys as laid out in paragraph (b) of this section.