DIN471-B ano elastic apo apo no ke kumu

ʻO DIN471-B ʻano elastic retaining apo no ka lāʻau, pono ka hoʻomaʻamaʻa wela i ke kinai ʻana a me ka tempering. ʻO ka mea nui ka C67S puna kila, a mālama ʻia ka ʻili o ka huahana.ʻO ke kila puna ke kumu wela a me ka phosphated, me ka paʻakikī like ʻole a me ka elasticity, a ua flush a deburred ka ʻili.