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  1. susanta kumar ghadai

    Marking Recess In API 7-1.

    Hello All, I am making a drill stem (TYPE-A) sub according API 7-1 & 7-2. There is information about marking recess in the 7-1. But there is no dimensional info. about the recess. Qustion-1 I need Depth, width and length of recess or (any Code which is giving info. about recess dimension).
  2. susanta kumar ghadai

    PR(Performance Requirement) Requirement in API 6A Product

    I read API6A code but i confused in PR Requirements, Qustion-1: How we can decide which product belong to which PR ? Qustion-2: How a Product differ from PR1 and PR2 Please Help me out to solve this problem.
  3. susanta kumar ghadai

    PR(Performance Requirement) Requirement in API 6A Product

    I read API6A code but i confused in PR Requirements, Qustion-1: How we can decide which product belong to which PR ? Qustion-2: How a Product differ from PR1 and PR2 Please Help me out to solve this problem.
  4. susanta kumar ghadai

    Closure Bolting Calculation

    Hii, in API 16A and 16C closure bolting given, Bolt tensile stress based on the minimum cross-sectional area of the bolt and stud,shall not exceed the following limit 1)Sa ≤ 0.83Sy 2)Sb ≤ 1.0Sy Sa = is the maximum allowable tensile membrane stress Sb = is the maximum allowable tensile...

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