Wastewater treatment plants - Principles for the design of structures and technical equipment - Part 4: Specific principles for shutoff devices as penstocks, sluice gates, stoplogs etc.— 11 стр.
Mechanical properties of corrosion-resistant stainless steel fasteners - Part 1: Bolts, screws and studs (ISO 3506-1:1997); German version EN ISO 3506-1:1997— 19 стр.
Mechanical properties of corrosion-resistant stainless steel fasteners - Part 3: Set screws and similar fasteners not under tensile stress (ISO 3506-3:1997); German version EN ISO 3506-3:1997— 12 стр.
Sewage treatment plants - Principles for the design of structures and technical equipment - Part 4: Specific principles for shutoff devices without body— 6 стр.
Sewage treatment plants - Principles for the design of structures and technical equipment - Part 4: Specific principles for shutoff devices without body— 6 стр.