Manhole cover

Alkali-resistance: The surface of sample is corrosion-free after soaking in the sodium hydroxide solution for 24h

Acidity-resistance: The surface of sample is corrosion-free after soaking in the sulphuric acid solution for 24h.

0.26

<1.0

Water-absorption       (%)

0.34

<0.4

Cold-Hot Resistance measure

1.62*10⁴

>1.4*10⁴

Modulus of elasticity (kg/cm²)

35.58

>30

Compressive strength (Mpa)

14.1

>10

Tensile strength (Mpa)

97.5

95

Impact toughness resistance (kg/cm²)

15.5

>14

Anti-breaking strength(Mpa)

Result

Standard

Tested Item

4.Technical standard:

Note: We can change the specifications and color as customer's requirements

18

760

20

76

50

1. Features
(1) Environmental protection
With raw material non-toxicity, it will not influence to user;