RAW MATERIALS

End Fittings	Core	Sheds and Housing
Hot dip galvanized cast iron or cast steel	Epoxy & Glass fiber (ECR is available)	HTV Silicone Rubber
Min. thickness of the galvanization: 86μm	Diameter(mm): Φ38, Φ40, Φ55, Φ70, Φ90, Φ120	Color: Grey, Red

Parameters

Item	Requirement	Measured Valued
Visual examination	Fuchsine,grey or white, no obvious mechanical admixture. Vulcanized sillion rubber with dense and smooth cutting surface.	Ok
Hardness (shore A)	≮50	65~70
Tensile strength (Map)	≮4	4~6
Failure elongation (%)	≮150	≮180
Tearing strength (kN/m)	≮10 (right angle sample)	12~15
Volume resistivity (Ω.m)	1X1012	3~8X1012
Puncture strength (kV/mm)	Alternating current ≮22	≮30
Tracking and erosion	TMA4.5,erosion depth≯2.5mm	TMA4.5, erosion depth <0.8mm
Flammability (Grade)	FV-0	FV-0

Standard

We have implemented advanced management and set up a strict quality management system according to ISO90001:2008. All the products' quality requirements comply with IEC61109, IEC62231, GB/T19519-2004, GB/T 22079-2008, DL/T 1048-2007, DL/T810-2002 and TB/T3199.2-2008 Standards, etc.