HG21573.4 Large Diameter Nut-Type HI

Implementation standard: HG/T21573.4 product specification: M48 ~ M140 material/grade: 25#, 40Mn, 30CrMoA product description: suitable for large diameter nuts for connecting flanges of pressure vessel equipment and manhole flanges, with types: r-type nuts (round nuts), h-type nuts (hexagonal nuts), HI-type nuts (hexagonal nuts with holes), HR-type nuts (hexagonal round combined nuts)
Executive standard: HG/T21573.4
Product specifications: M48~M140
Material/Grade: 25#、40Mn、30CrMoA
Product Description:

It is suitable for large-diameter nuts for connecting flanges of pressure vessel equipment and manhole flanges. The types include: R-type nuts (round nuts), H-type nuts (hexagonal nuts), HI-type nuts (hexagonal nuts with poking holes), and HR-type nuts (hexagonal round combined nuts)

 

 

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