常用规格表规格规格规格规格规格规格规格规格18*223*330*638*2.550*258*368*378*810*2.523*432*238*350*2.558*468*480*216*224*232*2.538*3.550*358*668*680*316*2.524*332*338*450*459*270*280*416*324*432*3.538*650*659*370*380*617*225*232*440*251*259*470*480*817*2.525*332*540*351*359*670*680*1217*325*432*640*451*460*272*281*218*227*234*240*552*260*372*381*418*2.527*334*2.540*652*360*472*481*618*327*434*342*252*460*672*681*819*228*234*442*352*662*275*281*1219*2.528*2.534*542*453*262*375*382*419*328*334*642*653*362*475*482*619*3.528*3.535*245*253*462*675*682*8常用材质化学成分10#0.07~0.130.17~0.370.35~0.65≤0.035≤0.03520#0.17~0.230.17~0.370.35~0.65≤0.035≤0.03535#0.32~0.390.17~0.370.35~0.65≤0.035≤0.03545#0.42~0.500.17~0.370.50~0.80≤0.035≤0.03540cr0.37~0.440.17~0.370.50~0.80≤0.035≤0.0350.08~1.1025Mn0.22~0.20.17~0.370.70~1.00≤0.035≤0.035≤0.2537Mn50.30~0.390.15~0.301.20~1.50≤0.015≤0.020标准，材质，交货状态主要标准：GB/T3639，DIN2391-94/C，DIN2445，EN10305，DIN1630，DIN1629，ASTMA106，ASTMA179，JISG3445主要材质：10#，20#，35,45,40Cr,25Mn.37Mn5,St35(E235),St37.4,St45(E255),St52(E355)主要交货状态：NBK(+N)，GBK(+A)，BK(+C)，BKW(+LC)，BKS(+SR)