Dresser sleeve Coupling (BOLTED SLEEVE COUPLING) Dresser coupling Bolted sleeve Couplings Style 38 dresser coupling for steel pipeDresser sleeve Coupling (BOLTED SLEEVE COUPLING) Qingdao Okval Bolted Sleeve Type Couplings for Plain End Pipe OKVAL brand bolted sleeve couplings are used to join Plain End Pipe ,okval dresser coupling design has sleeves which slide over the pipe ends to which Supplies Depot: Wal Rich 4531004 1 inch CTS Short Brass Dresser Coupling DRESSER PIPELINE SOLUTIONS 0065 0033 003 Style 65 Boltless Long Coupling, 1 1 4 in Nominal, Compression End Style, Malleable Iron Torrco