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U型不锈钢无缝管
材料：304/304L/316/316L/316TI/321/310S/347H/904L/2205/2507等标准：ASTM A312/ ASTM A269/ GOST 9940-81/ GOST 9941-81 等...
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Product Introduction
| 材料： | 304/304L/316/316L/316TI/321/310S/347H/904L/2205/2507等 |
| 标准： | ASTM A312/ ASTM A269/ GOST 9940-81/ GOST 9941-81 等 |