Thickness measurement of swage concentric nipple
Thickness measurement of swage concentric nipple
(OP)
I have given swage concentric nipple 1/2 x 1/4 inches to third party inspection for inspection. We need thickness measurement by pulse echo method as per E797, but inspection agency & the stockiest are saying that they will use dial caliper (which has a least count of 0.05 mm) instead of pulse echo method to measure the thickness. As per them, pulse echo method cannot be done on the finished products because of the roughness of the surfaces, different angles & radian which are naturally occurring in the nipples mentioned above. AS PER THEM, PULSE ECHO METHOD E797 IS SUITABLE FOR FLAT FITTINGS ONLY.
I request suggestions
I request suggestions





RE: Thickness measurement of swage concentric nipple
Ask them how they are going to measure the wall in the transition. You could put it on a CMM and take the difference between the outside and inside, but not with calipers.
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P.E. Metallurgy, Plymouth Tube
RE: Thickness measurement of swage concentric nipple