jizhong grooved couplings and fittings provide a rigid or flexible pipe connection for fire protection systems with dependable seals over a range of internal pressure situations.
We have a very professional laboratory with full serious of testing and inspection as leak testing, raw material receiving inspection, batch chemical composition inspection, microstructure testing, dimension inspection, first article inspection, in-process inspection and final visual inspection in order to ensure the product quality.
our company as a malleable iron pipe fittings supplier ,if you need that pls contact us.

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