フランジを付けたようになったゲート弁

ビデオ説明:
Discover the DN50 PN10 No Rise Stem Manual Gate Valve, designed for water conservancy with ductile iron, cast steel, and stainless steel construction. This gate valve ensures reliable performance with its vertical ram movement for full opening or closing, ideal for petrochemical and water treatment applications.
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大口径ゴム球の製造工程

単球ゴム接頭
July 03, 2025