Description: Large diameter nuts for pressure vessel equipment flanges and manhole flanges. Types are R type nuts (round), H type nuts (hexagonal), hi type nuts (hexagonal with hole), HR type nuts (hexagonal combination).
Product Specification: M39-M120
Material/Grade: 25, 40Mn, 30CrMoA, etc.
Implementation criteria: HG20634, SH3404, HG21573.4, etc.
Surface treatment of products: blackening, phosphating, galvanizing, dacromet, cadmium plating, fluorocarbon plating, etc.