Coated metal tubing

Details Coated metal tubing Coated metal tubing

1980-06-04

1981-12-08

Kendall, Ralph S.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

138146, 427406, 427 46, 427349, 427367, 428626, 428645, B32B 1502

Patent

active

043048226

ABSTRACT:
Corrosion resistant coatings are applied to metal tubing while substantially continuously moving the metal tubing through a series of stations. The process comprises the sequential steps of flowing by gravity a zinc-rich thermosetting coating suspended in a volatile carrier onto the tubing, the viscosity of the coating composition being such that it flows around and completely covers the external surface of the tubing, removing excess coating by means of an air blower arranged circumferentially around the tubing and sequentially heating the coated tubing first to volatize off the carrier and then more rapidly to crosslink the thermosetting coating composition.

REFERENCES:
patent: 3687738 (1972-08-01), Malkin

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