
Iso/dis 9631 - Rubber Seals - Joint Rings For Pipelines For Hot Water Supply, Drainage And Sewerage Up To 110 Deg C - Specification For The Material
出版:British Standards Institution

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Iso/dis 9631 - Rubber Seals - Joint Rings For Pipelines For Hot Water Supply, Drainage And Sewerage Up To 110 Deg C - Specification For The Material
出版:British Standards Institution
专家解读视频