GB 50242-2002 第3.2.1条
| | Before valve installation, strength and tightness tests shall be conducted; for each batch (same brand, same model, same specification), 10% shall be sampled for testing, with not less than one valve. |
GB 50242-2002 第3.2.1条 Code for Acceptance of Construction Quality of Building Water Supply, Drainage and Heating Engineering
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