Welded Steel Pipes in Unalloyed and Low Alloy Steels for Supply Purposes, Process Plant and Tanks; Pipes with Quality Specifications, Technical Conditions of Delivery— 4 стр.
Seamless Tubes in Unalloyed Steels for Supply Purposes, Process Plant and Tanks; Tubes with Quality Specifications, Technical Conditions of Delivery— 4 стр.
Private and individual drinking water supply; governing principles relating to the requirements to be met by drinking water; design, construction and operation of the supply systems; DVGW; code of practice— 16 стр.