C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 22/72 (2006.01) C23C 4/08 (2006.01) C23C 4/16 (2006.01) C23F 15/00 (2006.01) F16L 9/02 (2006.01)
Patent
CA 2544770
Metallic tube, pipe and conduit are made in a continuous process that includes a zinc galvanization stage, a first passivation stage, a second passivation stage and a third passivation stage. A colorant is added to the tube, pipe or conduit during the continuous manufacturing process, and the colorant imparts the appearance of a color, such as red. The continuous movement of the tube, pipe or conduit is not halted during normal operation of the tube, pipe or conduit manufacturing and coloring process.
La présente invention a trait à un tube, tuyau et conduit métalliques fabriqués en un processus continu comprenant un étape de galvanisation au zinc, une première étape de passivation, une deuxième étape de passivation et une troisième étape de passivation. Un colorant est ajouté au tube, tuyau ou conduit lors du processus de fabrication continu, et le colorant procure un aspect d'une couleur, tel que le rouge. Le déplacement continu du tube, tuyau ou conduit ne s'arrête pas lors d'une opération normale du processus de fabrication et de coloration du tube, tuyau ou conduit.
Boyce William
Florek James
Hays James
Allied Tube & Conduit Corporation
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
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