February 27, 2017
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April 2, 2020
API N80-1 Seamless Casing Pipe with BTC threads N80 Seamless Casing Pipe includes N80-1 and N80-Q steel grades. These 2 grades are the same in both of chemical composition and mechanical properties. The only difference is the Heat Treatment. The latter one N80-Q steel pipe requires heat treatment before they […]