T/CSBM 0006-2021 Active

Main Technical Content: **Technical Requirements:** **Product Classification:** (1) **Grade, State, and Specifications:** The grade, supply state, and specifications of degradable medical magnesium alloy capillary tubes shall comply with Table 1. Orders exceeding the specifications in Table 1 shall be resolved through negotiation between the supplier and purchaser and noted in the order form (or contract). (2) **Marking and Examples:** - The product marking shall be in the following order: product name, standard number, alloy grade, usage code, and specifications (diameter and length). - Example 1: A non-standard capillary tube made from ZE21B in xxxx state with an outer diameter of 2.75 mm and a wall thickness of 0.15 mm. The marking is as follows: - **Example:** Degradable medical magnesium alloy capillary tube ZE21B-xxxx Φ2.75×0.15 T/CSBM-xxxx. - Example 2: A standard capillary tube made from WE43C in xxxx state with an outer diameter of 4.00 mm, a wall thickness of 0.50 mm, and a length of 800.00 mm. The marking is as follows: - **Example:** Degradable magnesium alloy capillary tube WE43C-xxxx Φ4×0.5×800 T/CSBM-xxxx. **Chemical Composition:** (1) The chemical composition of degradable medical magnesium alloy capillary tubes shall comply with Table 2. (2) **“Other single impurities”** refer to elements listed in the table header but without specified limit values. For impurities not listed in Table 2, if the content exceeds 0.010%, they shall be included in the total impurities, but the supplier may not conduct routine analysis. (3) For other impurities not specified in Table 2, if the purchaser has special requirements, the parties may negotiate separately. (4) Analysis values shall be determined using the rounding comparison method, with the rounding digit matching the limit value in Table 2. **Dimensional Tolerances:** (1) **Wall Thickness Tolerance:** - The allowable wall thickness tole