Current location - Information Consultation Platform - Patent Search - Find out what the letter code of OSG tap means, and explain the complete electronic documents, such as EX-FC-HT, vpo-DC-LT, etc.
Find out what the letter code of OSG tap means, and explain the complete electronic documents, such as EX-FC-HT, vpo-DC-LT, etc.
Pre-FC-HT
EX general meaning /FC special /HT cast iron straight groove tap
VPO DC
V V coating /P CPM powder high speed steel /O internal cooling oil hole /DC casting special /LT long handle type