1, the appearance of flange inspection
1-1, forging flange surface should be smooth, can not have forging scars, defects such as cracks.
1 to 2, flange machining surface can not have burrs, harmful scratches and other defects to reduce the flange intensity and reliability.
1-3, RTJ flange sealing surface shall all be item by item, inspection, slot of two sides can not have the crack caused by mechanical technicians, surface defects such as scratches or injured.
2, flange material shall comply with the provisions of the relevant standards, and shall have the factory inspection certificate.
3, flange processing quality should comply with the provisions of the flange standard.
4, flange processing is completed, should be in the tu rust-proof oil seal face, and to prevent scratches and impact.
5, the flange of NDT inspection shall be determined between the user and the manufacturer.
6, flange acceptance rules shall be determined between the user and the manufacturer.
Source: Zhejiang Yaang Pipe Industry Co., Limited (www.yaang.com)