CYLINDRICAL PROTECTIVE MEMBER AND POLYETHYLENE PIPE WITH CYLINDRICAL PROTECTIVE MEMBER FOR GAS
PROBLEM TO BE SOLVED: To provide a technology related to a cylindrical protective member for covering outside of a polyethylene pipe for gas, in particular the cylindrical protective member of which installation work is easily carried out by folding back a sheet at its center in a width direction an...
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Format: | Patent |
Sprache: | eng ; jpn |
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