Q345B方管是一种具有中空截面周边没有接缝的长条钢材。

　　Q345B方管塑性

　　SUXINGSHIZHIJINSHUCAILIAOZAIZAIHEZUOYONGXIA，CHANSHENGSUXINGBIANXING(YONGJIUBIANXING)ERBUPOHUAIDENENGLI。

　　Q345B方管硬度

　　YINGDUSHIHENGLIANGJINSHUCAILIAORUANYINGCHENGDUDEZHIZHEN。MUQIANSHENGCHANZHONGCEDINGYINGDUFANGFACHANGYONGDESHIYARUYINGDUFA，TASHIYONGYIDINGJIHEXINGZHUANGDEYATOUZAIYIDINGZAIHEXIAYARUBEICESHIDEJINSHUCAILIAOBIAOMIAN，GENJUBEIYARUCHENGDULAICEDINGQIYINGDUZHI。

　　CHANGYONGDEFANGFAYOUBUSHIYINGDU(HB)、LUOSHIYINGDU(HRA、HRB、HRC)HEWEISHIYINGDU(HV)DENGFANGFA。

　　Q345BFANGGUANPILAO

　　QIANMIANSUOTAOLUNDEQIANGDU、SUXING、YINGDUDOUSHIJINSHUZAIJINGZAIHEZUOYONGXIADEJIXIEXINGNENGZHIZHEN。SHIJISHANG，XUDUOJIQILINGJIANDOUSHIZAIXUNHUANZAIHEXIAGONGZUODE，ZAIZHEIZHONGTIAOJIANXIALINGJIANHUICHANSHENGPILAO。TUHAIXUYOUQITAJIEMIANXINGZHUANGDEYIXINGGANGGUAN。