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There are bolt tightening torque decision standards in KSB 0101 for high tension bolt(torque calculation method) and in KSB 0140 for general bolts(general rule for bolt tightening torque decision), But in bolt torque decision general rule method, using Stainless bolt, friction coefficients between bolt and to-be-bolted object will rule the calculated yielding contraction axle force and yielding contraction torque, making it hard to determine the contraction torque in the field. So in other to help determine the contraction torque for stainless bolts(STS304) in field using high tension bolt torque decision method, the needed torque for stainless bolt(STS304) is calculated referencing high tension bolt torque decision method. And the calculated torque is planned to be compared to field test results.
