For high and long span of fastener-style steel pipe formwork supports, it is not sufficient to ensure it's stability and safety by only analyzing the stability of single standing poles and just taking necessary construction measures. The stability analysis for the whole fastener-style steel pipe formwork supports is required. Sampling inspections of the tightening torques of steel fasteners of four construction projects were made. The measurements show that the fastening torques of more than eighty percents...