Coating and heating device of large-caliber plastic-coated composite steel pipe
A composite steel pipe and heating device technology, which is applied to the surface coating liquid device, coating, pretreatment surface, etc., can solve the problems of uneven spraying, low production efficiency, low spraying efficiency, etc., to ensure the quality of spraying, The effect of improving productivity
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[0028] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.
[0029] A plastic-coating and heating device for large-diameter plastic-coated composite steel pipes, including a primary heating furnace 7, a plastic-coating mechanism, a conduction frame 6 and a secondary heating furnace 14, a conduction frame is arranged behind the primary heating furnace, and two sides of the conduction frame There is a plastic coating mechanism on the side, and a secondary heating furnace is arranged behind the conduction frame. The innovation is that the plastic coating mechanism is a two-way internal adsorption spraying mechanism, and also includes a buffer conduction frame 13, which buffers the conduction frame Set between the conduction frame and the secondary heating furnace.
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