ETP Electrolytic Tinplate Coil

ETP is a cold-rolled low-carbon steel coil or sheet coated with tin on both sides through a continuous electrolysis operation. When flowing and melting, a tin-iron layer is formed between the steel base and the matte tin layer. Electrolytic tinplate coils and sheets used for metal food packaging are thin steel sheets coated with tin coating through electrolytic deposition. The tinplate produced through this process is essentially a sandwich in which the central core is strip steel. The core is cleaned in an pickling solution and then passed through a bath containing an electrolyte with tin deposited on both sides. As the strip passes through a high-frequency electric induction coil, it is heated, causing the tin coating to melt and flow, forming a shiny coating. ETP Electrolytic Tinplate Coils can be of single reducer (SR) or double reducer (DR) type and are available in sheet and/or roll form. DR ETP is generally thinner but stronger than traditional SR ETP. DR ETP is produced by electrolytically tin-plating steel, which, after an initial cold rolling and annealing process, is followed by a second lubricated cold rolling process to provide additional strength to the double-rolled material. Quan Shuo Metal produces DR ETP in the DR08 (DR 550) grade with thicknesses ranging from 0.14 to 0.21 mm. Soft DR ETP is a double-thinning material with lower secondary cold deformation and a hardness of 65+4/-3 compared to regular DR ETP. Soft DR is available in thicknesses ranging from 0.18 to 0.23 mm. It has a brighter finish than SR ETP in the same thickness range and also offers a lighter option than T65 condition grade SR ETP.