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ГОСТ 3634-2019 Cast Iron Manhole covers

Cast Iron Manhole covers and frames standard by ГОСТ 3634-2019/ГОСТ 3634-99 for
Description
Description

Cast Iron Manhole covers and frames standard by ГОСТ 3634-2019/ГОСТ 3634-99 for Russia market

1. According to ГОСТ 3634-2019/ГОСТ 3634-99

2. The material grade: GGG500/7,

3.Coating: black bitumen、epoxy powder or bare.

The Ductile/Grey Cast iron Manhole Covers and frames and gully and grate which are produced by our company with below advantages:

----Security, prevent the cover being stolen

----No noise.

----High load-bearing

----corrosion resistance

----Safety

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