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nature : outside the impermeable surface glazed ceramic tubes. Separable straight, square tube, pipe leakage to other varieties. Adobe chemical composition SiO255% ~ 60%, Al2O3 25% ~ 30%, Fe2O3 1.5% to 2.0%, MgO0.5% ~ 1.5% CaO, 0.3% ~ 1.0%. Resistance within 0.3 ~ 0.4 MPa pressure, the water absorption of 6% to 9%, 94% acid degrees ~ 98%. The drainage for agricultural irrigation pipes, the pressure within the pressure for the use of 0.5 to two times higher elongation. The general squeeze tube, impose soil glaze firing or impose salt glaze.
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