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Alibaba offers 1,504 q345b hollow sections products. About 92% of these are steel pipes, 1% are metal building materials, and 1% are stainless steel pipes. A wide variety of q345b hollow sections options are available to you, such as q235, 16mn, and 10#.

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About 87% of these are steel pipes, 3% are pipe fittings, and 1% are stainless steel pipes. A wide variety of galvanized steel liquid pipe options are available to you, such as 10#, a106(b,c), and 20#.

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