501-645 SAAR1651 1g O/N in Steel Pin Standard , 0.0057% O, 0.0210% N 100 钢中氧氮标样
762-747 SAAR546 1g Hydrogen in Steel Pin Standard , 1.1 PPM H 100pcs 钢中氢标样
502-061 SAAR555 1g Hydrogen in Steel Pin Standard , 3.4 PPM H 100 pcs 钢中氢标样
501-529 /502-060 SAAR556 1g Hydrogen in Steel Pin Standard , 5.0 PPM H 100 钢中氢标样
501-644 SAAR644 1g O/N in Steel Pin Standard , 3PPM O, 157PPM N 100 钢钉标样