国产亚洲高清成人无码在线观看_男人天堂av日韩_国产在线精品一区二区夜色还会玩转热点_50岁经典露脸老熟女_美女裸身黄色网站_偷拍日韩AV电影_国产精品嫩草影院永久在_国产精品无码一区二区三级在线_亚洲国产黄片观看_成人免费视频网站www

Model: DL-9

· The wooden wall leakage wedge is mainly composed of wooden wedges of various specifications, processed by softened white pine to make salt, soft texture and complete size. The plugging wedge is specially insulated to prevent cracking and deformation. Technical performance parameters

·Medium temperature: -70-100 °C

·Working pressure: -1.0-0.8MPa plugging