标题: BS EN 448: 2015 District heating pipes. [打印本页] 作者: hgundas 时间: 2019-11-17 21:30:50 标题: BS EN 448: 2015 District heating pipes.
[attach]214077[/attach] BS EN 448: 2015 District heating pipes. Preinsulated bonded pipe systems for directly buried hot water networks. Fitting assemblies of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene 作者: admin 时间: 2019-11-25 16:23:54