Flange Nut Connection Sequence

Flange Nut Connection Sequence

1. Piping: Use a pipe cutter or grinding wheel cutting machine (the cutting blade should be dedicated) to vertically cut stainless steel pipes according to the required length, clean the end burrs, and round them;

2. Welding: The left and right conical flange plates (with grooves, specifically designed for embedding flange sealing pads on both sides) are welded to the two pipe ports that need to be connected using tungsten argon arc welding (TIG welding);

3. Gaskets: Double sided flange sealing gaskets are lined between the left and right flange pieces;

4. Tightening: Clamp two flange plates with clamps, and then use fastening screws (hexagon socket bolts) to clamp the flange or tighten the handle (one end of the external thread is connected to the internal thread of the handle, and the other end is connected to the fixed rivet for flexible connection).

Basic parameters of flange nuts

Function or purpose: mostly used for pipeline connections or workpieces that require additional nut contact surfaces

Material: A3 low-carbon steel 35K high-speed steel wire rod 45 # steel 40CR 35Crmoa

Hardness level: Level 4, Level 5, Level 6, Level 8, Level 10, Level 12

Surface treatment: Generally divided into two types: color zinc plating and white zinc plating, and generally cold electric galvanizing!

Main specifications: M5 M6 M8 M10 M12 M16 M20 (flange nuts above M20 and M14 M18 are not commonly used)

Thread specification: refer to national standard nut thread

National standard code: GB6177-2000