CH336346A - Procédé de renforcement d'un collecteur, matrice pour la mise en oeuvre de ce procédé et collecteur obtenu par ledit procédé
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Procédé de renforcement d'un collecteur, matrice pour la mise en oeuvre de ce procédé et collecteur obtenu par ledit procédé
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Publication number
CH336346A
CH336346ACH336346DACH336346ACH 336346 ACH336346 ACH 336346ACH 336346D ACH336346D ACH 336346DACH 336346 ACH336346 ACH 336346A
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Publication date
Application filed by Huet AndrefiledCriticalHuet Andre
Publication of CH336346ApublicationCriticalpatent/CH336346A/fr
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
B21C37/15—Making tubes of special shape; Making tube fittings
B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
B21C37/29—Making branched pieces, e.g. T-pieces
B21C37/292—Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
CH336346D1955-11-101956-10-09Procédé de renforcement d'un collecteur, matrice pour la mise en oeuvre de ce procédé et collecteur obtenu par ledit procédé
CH336346A
(fr)
Procédé de préparation d'un p-dioxane substitué, et utilisation du p-dioxane obtenu par mise en oeuvre dudit procédé pour la destruction d'insectes et acariens