线夹本体和引流线夹为铝制件，其余为钢制件。
The body and lead-flow clamp are aluminium, the other parts are hot-dip galvanized steel.
封闭式引流管流线形头部内侧设有导引钢针定位凹槽。
The inside of the streamline shape head part of the closed type drain tube is provided with the positioning groove of the guide steel needle.
封闭式引流管流线形头部内侧设有导引钢针定位凹槽。
The inside of the streamline shape head part of the closed type drain tube is provided with the positioning groove of the guide steel needle.
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