Title:
COMPOSITE FUSION-WELDED TUBING
Document Type and Number:
WIPO Patent Application WO/2022/095309
Kind Code:
A1
Abstract:
Disclosed is a composite fusion-welded tubing, formed by co-extruding a type II PE-RT material and an LLDPE material. The mass percentages of the materials are: 56-98% of type II PE-RT and 2-44% of LLDPE. The composite fusion-welded tubing of the present invention has good flexibility, thus making the laying of the tubing convenient and economical. The produced tubing can reduce the use amount of tubings during construction by means of coiling and bending, thus reducing construction cost. In addition, the tubing has excellent low-temperature-resistant performance, and therefore can also be constructed under the condition of low temperature in winter and does not need to be preheated during bending.
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Inventors:
MATTHEW (SC)
Application Number:
PCT/CN2021/077758
Publication Date:
May 12, 2022
Filing Date:
February 25, 2021
Export Citation:
Assignee:
VIVENIC INTL CO LTD (CN)
International Classes:
F16L9/12; C08L23/08
Domestic Patent References:
| WO2019125065A1 | 2019-06-27 |
Foreign References:
| CN104292596A | 2015-01-21 | |||
| CN103450540A | 2013-12-18 | |||
| CN110724334A | 2020-01-24 |
Attorney, Agent or Firm:
NANJING SUCHUANG INTELLECTUAL PROPERTY LAW FIRM (CN)
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