hdpe double wall corrugated drainage pipe specification:
DN/IDdim.mine mine minA. min
2001981.51.1543002962.01.7654003942.52.3745004923.03.0856005883.53.5968007854.54.511810009855.05.0140120011855.05.0162 The main physical and mechanical propertiesItemIndexRing stiffness SN4 (KN/M2)≥4Ring stiffness SN8 (KN/M2)≥8Impact strength (%)≤10Ring supplenessThe sample is smooth without any recurvation or wall loseOven experimentNo delamination and no crackCreep rate≤4
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