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新旧国标和国外标准表面粗糙度（光洁度）代号及参数对照表
2016-10-30 jwllovejob 159.81K
升降式止回阀国标型250H65H-25CAD图纸
2021-01-21 wx_246804 193.49KB
升降式止回阀国标型250H44H-25CAD图纸
2021-01-21 wx_246804 342.68KB
升降式止回阀国标型200H44H-64CAD图纸
2021-01-21 wx_246804 373.45KB
升降式止回阀国标型175H61Y-200CAD图纸
2021-01-21 wx_246804 246.3KB
升降式止回阀国标型150H44H-64CAD图纸
2021-01-21 wx_246804 481.29KB
升降式止回阀国标型80H41H-64CAD图纸
2021-01-21 wx_246804 234.73KB
升降式止回阀国标型50H61Y-200CAD图纸
2021-01-21 wx_246804 129.27KB
直通式截止阀国标型150J561Y-320CAD图纸
2021-01-21 wx_245883 1.13MB
直通式截止阀国标型150J41Y-100CAD图纸
2021-01-21 wx_245883 898.09KB
直通式截止阀国标型125J41Y-160CAD图纸
2021-01-21 wx_245883 436.27KB
直通式截止阀国标型100JD42H-40CAD图纸
2021-01-21 wx_245883 432.17KB
直通式截止阀国标型100J41Y-160CAD图纸
2021-01-21 wx_245883 705.65KB
直通式截止阀国标型100J41Y-100CAD图纸
2021-01-21 wx_245883 1.08MB
直通式截止阀国标型100J41H-160CAD图纸
2021-01-21 wx_245883 459.22KB
直通式截止阀国标型80J41H-100CAD图纸
2021-01-21 wx_245883 2.06MB
直通式截止阀国标型50J941Y-100CAD图纸
2021-01-21 wx_245883 1.08MB
直通式截止阀国标型50J41Y-100CAD图纸
2021-01-21 wx_245883 831.7KB
旋启式止回阀国标型200H44Y-160CAD图纸
2021-01-20 wx_245883 287.93KB
旋启式止回阀国标型150H44Y-160CAD图纸
2021-01-20 wx_245883 268.51KB

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