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万博体育app下载安卓版

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εɱzhun,εguoұzhun
εguoұzhunGB/T1972-92
εɱzhun涨˵εdechixi,Ҫqiu,鷽,jiansheƼ
εɱzhunhuaε
εɱzhuntijiemian,caoεɺpian
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GB /T 1222 gang
GB /T 2828.1 yangjiandi1:shou(AQI.)jiandejianyanghua
(GB/T 2828.1-2003,ISO 2859-1:1999,IDT)
GB /T 3 279 gangregang
GB /T 4 340.1 άshiyingdudi1:鷽(GB/T 4340.1-1999,egvI SO 6507-1:1997)
YB /T 5058 gangganggangdai
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2 rechuyingdu42 HRC-52 HRCΧڡ
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dude3%(zui󲻳. 15 mm).
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2 εjingǿѹchuziɸduchiӦȶڹ涨de£ziɸduӦڱ5涨de
pianΧڡyongjiuСziɸdude.3%e
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εmianhuajinchuruochu(׻dianƵ)ɹ˫Э
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ܱ为deεɣƼjinбmianǿchuǿchudeҪqiuɹ˫Э涨
ε ⼼Ҫqiu(ƣɳں)ʱɹ˫Э涨
һpian: 302ε
һpian: 65mn60si2mε
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