DZ-1 test block - NB/T47013-2015 Standard test block for non-destructive testing of pressure equipment
According to NB/T47013-2015 standard, DZ-I test block produced by Shandong Ruixiang Mould Co., LTD. (Shandong Jining Mould Factory) is used to test the blind area of the straight probe with the DB-D test block.