试用状况良好? 评定合格的焊接填充材料由焊接责任人或其授权责任人以书面形式通知生产运营部在产品上小批量试用,试用状况良好才能进入采购环节。 the welding fillers certified & accepted shall be notified to production & operation department in written by welding supervisor or authorized representative for small-lot trial-application, and which could be purchased formally only after applying in condition.查看更多