52 series 52 series insulator insulator steel cap steel cap models: C70, EMCO-C, small c70, X-4C, X-3C, 52-1,52-4 keywords such as: steel caps, porcelain steel cap, iron caps, insulator iron cap, suspension insulator steel cap, suspension insulator iron cap Product Description: 1. Material: malleable iron. 2. R & D: specialized engineers, according to user requirements of various standards, timely models, materials products, delivery. At the same time support the new ball you can pass the relevant technical data sheet, we have a special engineer for the specific requirements of your production mold. 3. Product quality and fully meet IEC standard 4. Usage: circuit transmission, lightning arrester and substation accessories. 5. Packaging: GB package or special customized according to customer requirements. 6. Delivery: Customer advances received within three weeks, new customer requirements polished ball depends on the circumstances. 7. Manufacturer: Hebei Jianzhi Casting Group Co., Ltd. porcelain steel cap 8. Origin: Yutian County, Tangshan City, Hebei Province 9. Minimum order quantity: 5000 10 supply capacity: 300 000 11 month delivery: factory or port of delivery.