350 kg medium frequency furnace coil , Inner diameter 490mm high 680mm  copper tube: 30mm X 30mm X 3mm 15 circle Overall quality: 80±0.5% kg,Can be customized according to customer requirements.the price is 150yuan /kg.If you are interested, please send me an email or add my WeChat.Email:firstfurnace@gmail.com ,wechat:18037961302,whatsapp:+86-18037961302