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Basic performance of raw materials for pipe fittings | ||||||||
Paramenter | Units | Requirement | Test Value | |||||
Density | (kg/m3) | ≥930 | 23°C | |||||
Melt flow rate | g/10min | 0.2-1.4 | 190°C,5kg | |||||
Thermal slaility(OIT) | min | >20 | 200°C | |||||
Volatilematter content | mg/kg | ≤ 350 | ||||||
Moisture content | mg/kg | ≤ 300 | ASTM D 4019:1994a | |||||
Carbon black content | % | 2.0-2.5 | ||||||
Carbon black dispersion | grade | ≤ 3 | ||||||
Gas proof components | h | ≥20 | 80°C,2MPa Hoop stress | |||||
En>5mm Resitance to slow crack growth | h | 165 | 80°C,0.8MPa Test Presssure 80°C,0.92MPa Test Presssure |
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