Physicochemical tests on product welding test plates
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1. Clause 5.2, Tensile test of the full weld metal, in NB/T 47016-2011 is applicable only to welded specimens of cylindrical products in boilers that are subject to internal pressure. So do we not need to conduct full-weld metal tensile tests on all products made in fixed-pressure vessels? 2. In Table 1 of NB/T47016-2011, for thicknesses of 10–20 mm, what does T≥16 in the full weld metal tensile test mean? 3. In Table 1 of NB/T 47016-2011, note 2 specifies that for test pieces made of metal and those produced using combined welding methods (or process qualification), two side-bending specimens shall be taken. There is an existing S31063 specimen that was welded using SMAW on one side and SAW on the other side; is it necessary to use two side-bending specimens for the test?
1. It’s not necessary; pressure vessels do not require full welds. 3. One specimen is sufficient