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| Polyurethane
heat preservation |
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The steel pipeline which is used of
stansporting the centralized heat supply pipeline, centralized cold
supply pipeline, oil pipeline and the hot insulated line which is
distributed, the outer protecting tube which is made from of polyethylene
(PE). The coating what the two kind of pipeline used combine with
together leaktightly through polyurethane foam heat insulating material.
The scope of the pipe diameter isφ90-φ1240．
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