HRB400钢筋弯曲检测参数钢筋直径弯芯直径D=4dD+3a(D+3a)±a/2标尺调节范围(mm)6244239~~~6026~3010407065~~~9039~4514569891~~~12052~601872126117~~~15065~752288154143~~~~=5dD+3a(D+3a)-a/2标尺调节范围(mm)28140224210~238105~11932160256240~272120~13636180288270~306135~15340200320300~340150~170
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