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Babban Matsi Mai Tsanani (Hydrogen)
Ya kamata kayan bututun hydrogen su kasance HR31603 ko wasu kayan da aka gwada don tabbatar da daidaiton hydrogen mai kyau. Lokacin zabar kayan bakin karfe na austenitic, abun da ke cikin nickel ɗinsa ya kamata ya fi 12% kuma daidai da nickel bai kamata ya zama ƙasa da 28.5% ba.
