Square edge malleable cast iron inner and outer thread flat seat union 331_National standard Ma steel pipe fittings_Malleable cast iron pipe fittings_Products_Shanghai Qiaoning Industrial Co., Ltd.

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Square edge malleable cast iron inner and outer thread flat seat union 331

Square edge malleable cast iron inner and outer thread flat seat union 331

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National standard Ma steel pipe fittings

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Square edge malleable cast iron inner and outer thread flat seat union 331