为什么对风管加工工艺进行验证？
Why is the air duct processing process verified?
工程中所选用的成品风管，应提供产品合格证书或进行强度和严密性的现场复验；产品合格证书，包括合格证及强度和严密性检测报告；如果对合格证书有异议，也可以对进场的风管进行强度和严密性进行现场测试。
For the finished air duct selected in the project, the product certificate shall be provided or the strength and tightness shall be re inspected on site; Product certificate, including certificate and strength and tightness test report; If there is any objection to the certificate, the strength and tightness of the incoming air duct can also be tested on site.
对于非采购的现场加工（含施工现场制作型槽模具 井盖钢模具 保定雅思 一次性止血带 保定养老院  保定水处理设备 一次性止血带  、委托加工及其他场地加工）制作风管，因受加工工艺及加工场地、加工方法、加工设备、操作人员的不同，其质量情况会有所不同，为检验其加工工艺是否满足施工要求，在风管批量加工前，应对风管加工工艺进行验证，验证合格后方可大批量加工。
For non purchased on-site processing (including on-site manufacturing, entrusted processing and processing at other sites), the quality of air ducts will be different due to different processing technologies, processing sites, processing methods, processing equipment and operators. In order to check whether the processing technology meets the construction requirements, the processing technology of air ducts shall be verified before batch processing, and can be processed in large batches only after the verification is qualified.
现场加工的风管工艺性验证，是在风管大批量加工之前，而不是全部加工之后的抽样检测。
The process validation of air ducts processed on site is the sampling inspection before mass processing of air ducts, not after all processing.