角法兰标准。平板法兰：指定孔模。如果没有提供的图纸，法兰将为空白。
Angle flange Standard. Flat flange: Specify hole pat-tern. If no drawing provided, flange will be blank.
盲设备口及人孔所用的垫片、螺栓及螺母在买方图纸或数据表中指定。
Gaskets, bolts and nuts for blind nozzles and manholes shall be as specified in Purchaser's drawing or data sheet.
卖方不能改变买方指定的设备口及人孔位置。
Nozzle and manhole location specified by the Purchaser shall not be changed by Vendor.
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