12Cr2MoWVB(钢研102)钢管进行气焊对口焊接,其焊口焊后热处理为()℃正火加760~780℃回火


12Cr2MoWVB(钢研102)钢管进行气焊对口焊接,其焊口焊后热处理为()℃正火加760~780℃回火

A.800~830

B.900~930

C.1000~1030

D.1100~1130

正确答案:C


Tag:正火 气焊 钢管 时间:2024-12-23 13:45:48