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e ka hoʻokele ma 24-11-15
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 ...
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ma ka admin ma 24-11-11
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ma ka admin ma 24-11-05
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e ka hoʻokele ma 24-11-04
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e ka admin ma 24-10-23
Alloy round steel Alloy round steel is a kind of steel made by adding a certain proportion of other alloying elements on the basis of carbon steel. ʻO kēia mau mea e pili ana i kēia mau mea e pili ana i nā mea i kaupalenaʻia akāʻaʻole ia e kaupalenaʻia i ka silicon (si), manganese (mn), tungsten (w) ), titenium (ti), chromium (cr), ni), ni ...
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ma ka admin ma 24-10-22
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ʻO nā kumukūʻaiʻo Domestic a me nā haoleʻAmelika FD16, FD53, FD54, FD56, FD99, FD99, FD99, FD95 mauʻano
Ma ka Admin ma 24-09-24
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. ..
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e ka hoʻokele ma 24-09-20
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