Nagidere ule siri ike dị iche iche - Nnwale ihe, Opekempe na-ehulata Radius Test, Bending Stifness Test, Torsion Load, Tensile Load, Hydrostatic Pressure Test, Kerosene Test, Vacuum Test for more than 2 months, N'ikpeazụ, emechara nnwale mgbawa na 6/1/2021 . Burst Test Pressure bụ ule chọrọ...
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