Founded in 1998, Zhejiang Guanyu Steel Tube specializes in stainless steel seamless tubes and pipes. We focus on products in the 300-grade series, particularly on specialty grades such as duplex steel (S31803 and 2205), 317L, 347H and 904L. Our main products include stainless and carbon steel pipe fittings, flanges and valves which are often used in the chemical, petrochemical, ship building, boiler and heat exchanger industries.
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