After mortar maintaining and solidifying, pipes should be coated on external and internal surface, marked and packed before storing and delivering. Those are belong to section of package process. How reasonable of process arranging and what level of machinery equipped will affect directly quality of out-looking, anti-corrosion and durability of pipes. Now day, coating on internal and external surface of pipes adopts method of auto coating after pre-heating pipes and drying in the end.

 Photos above show auto-coating line of pipes designed and manufactured by ours. It mainly consist of trimming of pipe socket end, pre-heating furnace, external coating facility and drying furnace.

Technological process:

soket end trimming→pre-heating→internal coating→external coating→drying→marking    →packing→delivering

 the advanced central control system is adopted in coating line to guarantee steadily and reliable running, high efficiency and high ratio of fuel utilization. Good quality of coating is proved from:

• Bright and smooth coating internal and external surface

• No peel and bubble on coating layer

• Good integration between coating layer and base of pipes

 External and internal anti-corrosive standards are fully conformed due to excellent performance of coating line.

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