Push-in socket according to DIN EN 61386-1 / DIN EN 61386-21, for producing straight butt connections between plug-in pipes and straight butt connections between socket pipe and plug-in pipe. for plug-in pipe: IESR ... F for socket pipe-fm: FM-MR ... F Dimensions (approx. dimensions) for pipe Ø: 63 mm Length: 104 mm Surface: hot-dip galvanized according to DIN EN ISO 1461 Material: steel, material no. E235 1.0308