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球阀系列
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加厚球阀 Thickened ball valve
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加厚球阀内外螺 Inner and external thread of thickened ball valve
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加厚球阀双头 Double heads of thickened ball valve
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加厚球阀双外螺 Double external thread of thickened ball valve
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加厚球阀双内螺 Double inner thread of thickened ball valve
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球阀双外螺 Double external thread of ball valve
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球阀外螺 External thread ball valve
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球阀内螺 Internal thread of ball valve
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球阀双内螺 Double internal thread of ball valve
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球阀宝塔双头 Pagoda double heads of ball valve
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球阀内外螺 Inside and outside of ball valve
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安全阀 Safely valve
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