WCB��ʲô���|(zh��)
WCB���Ї�(gu��)��(bi��o)��(zh��n)GB/T12229-89WCB������(gu��)��(bi��o)��(zh��n)ASTM A216-WCB��(bi��o)��(zh��n),2��(g��)��(bi��o)��(zh��n)������ͬ,���|(zh��)�ľ��w��(sh��)��(j��)����,����һ�c(di��n)��Ҫע�����,����ṩ�o��(gu��)��Ŀ͑�,�϶��Dz���ASTM��(bi��o)��(zh��n),���Ҕ�(sh��)��(j��)����C,SI,MN,P,S,����,߀Ҫ����������һЩ����CR,CU�ȹ�10��Ԫ�صĔ�(sh��)��(j��)��
WCB̼�
WCB�ஔ(d��ng)���҇�(gu��)��25��35�T�
WCB����Ҫ�ɷ�-���I(y��)��(bi��o)��(zh��n)
C≤0.3%
S≤0.045%
Mn ≤1.0%
P≤0.04%
Si≤0.6%