ISO 9538:2017规定了可重新连接和永久性液压管接头的弯曲试验程序。 本程序旨在对商用和军用飞机上使用的高强度液压管进行弯曲试验，液压管由耐腐蚀钢、钛和铝制成。

ISO 9538:2017 specifies a flexure test procedure for reconnectable and permanent hydraulic tube joints. This procedure is intended for conducting flexure tests on fittings with high-strength hydraulic tubes made of corrosion-resisting steel, titanium and aluminium for use on commercial and military aircraft.