PIPES FOR THE GAS- and OIL-TRUNK PIPELINES
ELECTRICALLY WELDED MULTI-PURPOSE STEEL PIPES
ELECTRICALLY WELDED STEEL WATER & GAS LINE PIPES
SHAPED PIPES OF HOLLOW (SQUARE AND RECTANGULAR) SECTION
PIPES WITH CORROSION-RESISTANT EXTERIOR POLYETHYLENE COATING
PIPES WITH HEAT-INSULATING POLYMER FOAM (ORGANIC CONCRETE) COATING
MECHANICAL PROPERTIES OF PIPES