Taking well lid and well base made of composite materials for example,
we carry out inspection according to CJ/T 121-2000 National Standard implemented
in Jan, 9th, 2001. The results of each performance index and requirements
of this standard are as follows:
| Inspection
Item |
Standard Value |
Measured Value |
| Rupture
Strength(Mpa) |
£¾14 |
15.50 |
| Shock
Resistant Tenacity(kg/cm2) |
95 |
97.90 |
| Tensile
Strength |
£¾10 |
14.10 |
| (Mpa)Compression
Strength |
£¾30 |
35.58 |
| Elasticity
Modulus(kg/cm2) |
£¾1.4¡Á104 |
1.62¡Á104 |
| Cold-Heat
Resistant Size Changing Rate(%) |
£¼0.4 |
0.34 |
| Water
Absorption(%) |
£¼1.0 |
0.26 |
| Acid
Resistance (no corrosion on surface after being placed
in 20% sulphuric acid solution for 24 hours) |
| Alkali
Resistance (no corrosion on surface after being placed
in 20% sodium hydroxide solution for 24 hours) |
|
Light Type |
Common Type |
Heavy Type |
Over-Heavy Type |
| Bearing Weight(T) |
2 |
10 |
24 |
35 |
| Bearing Weight(T) |
8 |
35 |
120 |
150 |
|
|
