Building hardware - Controlled door closing devices with hydraulic damping - Part 1: Surface(top) mounted door closer with crank drive and spiral spring (pot-type door closer)— 7 стр.
German construction contract procedures - Part C: General technical specifications for building works - General rules for all kinds of building works— 15 стр.
German construction contract procedures - Part C: General technical specifications for building works - General rules for all kinds of building works— 15 стр.