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  • Users: rado74
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  1. rado74

    Hand Wheels Hammer Test and Torque Test

    Hello! can anybody explain the meaning of this requirement for valves "VALVES SHALL MEET QUALIFICATION REQUIREMENTS FOR HAND WHEELS HAMMER TEST AND TORQUE TEST AS SPECIFIED IN PAR. 6.4.9 AND 6.4.10 OF API RP 591"? Thank you Corrado
  2. rado74

    HIC, SCC, SSC corrosion tests on forgings

    We are forged valve manufacture and an EPC is requesting for carbon steel A350 LF2, stainless steel A182 F316 and duplex A182 F51, HIC, SSC and SCC (where applicable) corrosion tests. Does make it sense to make these tests on forgings for valves up to 4"? Thank you Corrado
  3. rado74

    Calcium treatment for A350 LF2 and content of S < 0,003%

    We are forged valve manufacture and an end user is requesting for carbon steel calcium treated and with content S less than 0,003%. Our forging companies are saying that the calcium treatment is a very old treatment and in the last years it has been replaced by the use of vacuum during the...

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