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Clevis and tongue type ductile cast iron Caps for Suspension Insulators
1Material:Ductile cast iron
2Brand name: jianzhi
3Surface treatment: Hot dip galvanized
4.Zinc Thickness: Usually for GB Inspection the average value is 86μm ,customer‘s requirement can be followed
5Test method of Zinc Thickness
Instrument: Zinc coat thickness gauge.
Test method: randomly extract 10 points from the cap,then use the gauge test the zinc thickness,and calculate the average value.if the value reach 86μm then the Zinc Thickness is qualified
6. According to the strength grade, our basic products are divided into following nine types.
tensile strength grade(KN) | 40 | 70 | 100 | 120 | 160 | 210 | 300 | 400 | 530 |
mechanical damage(KN) | 60 | 85 | 120 | 140 | 185 | 240 | 330 | undetermined | undetermined |
7.usage: Assembled with Porcelain or toughened glass as the insulating elements for High Voltage power transmission
8.Technology: Sand casting





Payment and delivery
1.Payment : Irrevocable L/C at sight or TT 30% deposit in advance and the balance against copy of B/L.
2.Delivery time and methord : Usually within 30 days after receving L/C at sight or TT 30% deposit of the total value by sea.
3.Port of loading: xin’gang Tianjin,CHINA
4.MOQ: 1000PCS
5.Package: Standard export packing or as your requirement
6.OEM/ODM : can be acceptable by us


In 2012 the company has obtained ISO 9001/2008 certification, getting the aim of achieving the continue improvement of its products and its customer's satisfaction, ranking so as the leading company in its spaciality.

We are a foundry that produce ductile cast iron and Malleable casting, utilizing both sand and permanent mold methods. The company is primarily known as a valued casting supplier to Electrical Power industry, the High-voltage porcelain insulators and High speed rail. Our main products are iron insulator caps, ductile iron casting, malleable iron parts, Metallic fitting and other castings. Annual output of ductile iron casting 30,000 tons. The company has a full set of quality control, inspection and test equipment. The heart and soul of Jianzhi Group is our people. We have a highly-skilled team of committed technicians, engineers, processing and support teams, and managers.


Base is a kind of post insulator fitting for porcelain insulator/ceramic insulator. The material of base is ductile cast iron. Specialized in producing base for ceramic insulator/porcelain insulator for 12 years, we enrich lots of experience. Base for ceramic insulator/porcelain insulator has exported to Ukraine, Russia, Spain, Mexico ,USA and etc.
Contact Method
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