| Material | 30CrMnSiA |
| Specification | According to international standards |
| Surface treatment | According to the needs of the use scene treatment |
The use of alloy steel (30CrMnSiA) material made of cold pier, is a kind of head for the cylindrical head and with a word groove, screw is a half-screw fasteners, can be used to connect two or more parts, so that it is tightly fixed together, and its higher strength and sufficient toughness can effectively enhance the performance of the equipment, according to the needs of the processing of a variety of specifications of this type of parts.
| Material | 30CrMnSiA |
| Specification | According to international standards |
| Surface treatment | According to the needs of the use scene treatment |
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