Water and Gas Pipes (VGP) and Electric Resistance Welded (ERW) Steel Pipes

Water and gas pipes (VGP pipes) are designed specifically for water supply, gas distribution, and heating systems.
GOST 3262-75: This is the primary standard governing the production of steel water and gas pipes. It defines:

Dimensions (nominal bore/DN, outer diameter, wall thickness).
Series/Types (light, ordinary, reinforced).
Provisions for cut or rolled threads.
Material requirements (carbon steel grades in accordance with GOST 380 and GOST 1050).
Hydraulic testing pressure requirements.
Zinc coating specifications for galvanized VGP pipes (minimum coating thickness of 30 µm).