Quality systems - Model for quality assurance in design/development, production, installation and servicing (ISO 9001:1994); trilingual version EN ISO 9001:1994— 28 стр.
Reinforced concrete pressure pipes and distributed reinforcement concrete pressure pipes (non-cylinder type), including joints and fittings; German version EN 640:1994— 10 стр.
Prestressed concrete pressure pipes, cylinder and non-cylinder, including joints, fittings and specific requirement for prestressing steel for pipes; German version EN 642:1994— 17 стр.
Prestressed concrete pressure pipes, cylinder and non-cylinder, including joints, fittings and specific requirement for prestressing steel for pipes; German version EN 642:1994— 17 стр.
Reinforced concrete pressure pipes and distributed reinforcement concrete pressure pipes (non-cylinder type), including joints and fittings; German version EN 640:1994— 10 стр.
