... We supply all sizes and grades of casing and tubing, both Seamless and ERW.Manufacturing methodCold Drawn ... P110, Q125 API Connections Round thread(8tpi, STC and LTC), Buttress thread (5tpi, BTC) Non upset ... Round thread (8RD and 10RD) Premium Connections HSM, TP-CQ, RJS (compatible with VAM and New Vam) HSM, ... TP-CQ, RJS (compatible with VAM and HSC) Length range ...