Proper torque ensures correct bolt preload, which is critical for gasket compression and leak-free sealing
Under-tightening can cause leakage, while over-tightening may damage bolts, flanges, or gaskets
Common tightening methods include torque control, tensioning, and hydraulic tightening for high-pressure systems
Bolt tightening should be done in a cross (star) pattern to ensure even load distribution
Correct torque values depend on bolt grade, lubrication, and flange type to ensure safe and reliable performance