a) butt welds qualify full and partial penetration butt welds and fillet welds, while fillet weld tests are required where T-joints are performed by fillet welds or partial penetration butt welds in the predominant form of welded connections in relation to the design and productionwelding.上面这句话来自ISO 15614-1:2017 8.4.3部分,针对红色字体可不可以理解为,如果产品中有T型接头部分熔透对接焊缝,可以用角焊缝的PQR来评定?