
Specification for polyethylene fusion fittings with integral heating element(s) for use with polyethylene pipes for the conveyance of gaseous fuels
出版:British Standards Institution

專家解讀視頻
Specification for polyethylene fusion fittings with integral heating element(s) for use with polyethylene pipes for the conveyance of gaseous fuels
出版:British Standards Institution
專家解讀視頻