Metal mould casting coated with resin sand manhole cover,it is better than sand casting manhole cover. Why? There are several resons:
1.Mould:The life is longer.
2.Precision: it is higher precision,weight tolerance is 1%-2%.
3.Production time:it is one time shorter than sand casting.
4.Nice show exterior:blank casting is very beautiful.
What do you like? metal mould casting coated with resin sand manhole cover or sand casting manhole cover?
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