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
B21C37/08—Making tubes with welded or soldered seams
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Engineering & Computer Science
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Mechanical Engineering
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Arc Welding In General
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Butt Welding And Welding Of Specific Article
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Procede de fabrication de fils fourres pour soudage et pour servir d'ames d'electrodes et baguettes fourrees-enrobees. produits obtenus avec ce procede
Procede de coulee continue entre deux series d'elements cylindriques refroidis et mobiles exercant une pression sur le metal en voie de solidification