QWG(LZ)18-2004 双层卷焊管用冷轧薄钢带

Q/WGQ/WG(LZ)18-20042004-12-282005-01-03Q/WG(LZ)18-2004IQ/WG(LZ)18-20041Q/WG(LZ)18-200420.35CSiMnPSAlsWBD0.060.030.200.400.0250.0250.04a)ReHN/mm2RmN/mm2A%HR30T180d—a—WBD2802854003057d=0.5aa)RP0.2,11()GB/T222GB/T433622()GB/T2975GB/T228Q/WG(LZ)18-2004331GB/T433541GB/T181851GB/T2975GB/T2326740mm