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  • Users: nssjvs
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  1. nssjvs

    Valve stem borken from sectional redcution

    AISI 410 ( hardness 200 HBW ) valve stem broken immeditaly from the point where achme thread start. It looks like shear cutting ( machine cut). Thread portion OD is 30 MM and seal area is 36 MM. it cut from point where 36 MM become 30 MM. what could be the probable reason ? is the diameter...

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