ASTM A179 sanyi zana sumul carbon karfe bututu ne yafi amfani a daban-daban sassa na karfe tsarin wurare, yafi bayan da tsatsa na karfe guda immersed a 440 ~ 460 ℃ narkewa tutiya bayani, sabõda haka, karfe saman da aka haɗe zuwa tutiya Layer, wanda wasa. manufa mai adanawa. Wannan i...
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