About Us

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  Wenzhou Longzhu Iron&Steel Valve Co,.ltd  specializes  in various valve castings and mechanical fittings. The product equipment are the resin bonded sand line and medium frequency furnace. The resin bonded sand,water glass sand and loam sand are adopted for mould in producing means. The campany is equiped with direct reading spectrometers,crack detecter  using fluorescent magnetic particles,ultrasound thickness meters and equipment for mechanical castings. It has  an annual productive capacity of more than 4000 tons for steel castings and more than 1000tons for iron castings ,ordinary carbon steel, high alloy steel as ultralow temperature steel for special pruposes. We have obtained ISO9002 quality system  certificate.