Fuel-saving type multiple wall sewer

The present invention relates to a raw material saving-type multi-wall sewage pipe which, more specifically, can save a raw material as slimming grooves are formed on centers of a right side and a left side of a profile consisting of a plurality of hollow holes and cross-shaped reinforcing bars, and...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	JANG, SOO HO
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	BLASTING CESSPOOLS ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PIPES SEWERAGE SEWERS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WATER SUPPLY WEAPONS
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