- Classification and use of oil casing According to the function, oil casing is divided into: surface casing, technical casing and oil layer casing. 1. Surface casing 1. Used to isolate the soft, easy to collapse, easy to leak formations and water layers that are not very fixed on the upper part; 2 ...Akhri wax dheeraad ah
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Akhri wax dheeraad ah
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Akhri wax dheeraad ah
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Akhri wax dheeraad ah
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- Domestic and foreign bulletproof steel plates FD16, FD53, FD54, FD56, FD79, FD95 types, characteristics and applications 1. Introduction to bulletproof steel plates Bulletproof steel plates are generally used in bulletproof protection and explosion-proof projects, such as shooting range equipment. ..Akhri wax dheeraad ah
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