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[CN 201620711575.9] An air hammer lead title: An air hammer lead application number: CN 201620711575.9 Applicant: Gangnuo New Materials Co., Ltd. Application Date: 2016-7-7 Patent Type: Utility Model The utility model discloses an air hammer lead, including a cast iron lead body (1), and a steel baking ring (2) is thermally rolled outside the cast iron lead body (1). Compared with the prior art, because the utility model is thermally equipped with a rolling steel baking ring outside the cast iron lead, the service life of the lead is greatly improved without cracking.
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