Improvement of protective sleeve

An improvement of protective sleeve for acid-making fire-tube exhaust-heat boiler is characterized in that: the protective sleeve comprises two parts, the tail is columnar and the front is a hollow hexagonal head structure; the material is made of a special high fire-resistant, and high-strength mat...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	QINGHUAN WU
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE FURNACES HEATING KILNS LIGHTING MECHANICAL ENGINEERING OVENS RETORTS WEAPONS
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