how to calculate the ECR rods' weight?

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main products are as follows: 1.10kv -1000kv silicone rubber insulator（composite insulators） 2.Diam.5-180mm Insulator core rod (epoxy resin rod、ECR rods) 3.All kinds of insulator fittings such as ball,socket,Tongue,Clevis,Flange and so on. 4.Silicone rubber Note:The marking * listed in the specification in the table1-2 should be produced after signing the contract and MOQ should not be less than 1500m If you can’t find the suitable specification in the form. Please inform us. We can manufacture acording to your reque FRP ECR rods use for composite insulators or surge arresters，FRP ROD is made through alkali-free and twist-free glass fiber yarn soaking in epoxy compound glue, and passing the vacuum injection, continuous pulling and pressing, and being solidified. They have good electrical performance and mechanical strength.FRP rod are wildly used in freeway; bridge; airport; tunnel; railway station; jetties; underground engineering; sewage treatment plant etc.