TUBULAR MEMBER FOR SUBMERGED PIPE-LINE, SUBMERGED PIPE-LINE AND PROCESS OF DEPOSITION OF COAT ON TUBULAR MEMBER Russian patent published in 1998 - IPC

FIELD: construction of submerged pipe-lines. SUBSTANCE: submerged pipe-line is manufactured from tubular members with external coat composed of porous layer and layer of compaction of pores. Porous layer of alloy of zinc and aluminium with content of the latter from 5.0 to 60.0% is electrically deposited on tubular members of cast pig iron. Layer of organic or mineral binder in aqueous phase, solvent or powder phase with thickness from 100 to 140 μkm. is deposited on porous layer. EFFECT: reduced cost and enhanced efficiency of process. 3 cl, 9 dwg