nodular cast iron foundry manhole covers compressive strength corrosion resistant OEM security manhole covers sizes

Xianxian Shuangxing Cast Co.,ltd is located in the historic city of Cangzhou ,is a professional manufacturer of Ductile/Nodular Cast Iron Production. Our Manufacturing a\Capacity as follow:

1.Ductile/Nodular Sandy Cast Iron Manhole Cover:
Invisible Manhole Cover\Roundness Manhole Rings and Cover\Square/Rectangle Manhole Cover\Watertight and locking Manhole manholes etc.

2.Ductile/Nodular Cast Iron Frame and Grate :
Rainwater Grating\Drain Trench Grating ,Tree Grating , Gully Grating ,Rectangular Trench Frames&Grates \End wall Grating etc.

3.Catch Basins\Curb&Cutter Inlets\Type K Gratings\Iron Tank\Meter Box\Cast Iron Grids etc.

With more than 20 years' of manufacturing experience, advanced production equipment and strictly implement the ISO9001 international quality inspection system, wide products series and devotion to R&D, we are ready to be your partner Ductile Cast Iron products industry.