... 1989, and GB/T7129-2001, QC/T669-2000, GB/T7127.1-2000, HT/T2718-1995...Second, performance parameters1 test pressure: 0 ... pipe size: 6 ~ 70mm.Third, the function and characteristics1 a pipe pressure vessel alternating fatigue test functions,2. The main ... Angle and distance specimens with minimal bending radius regulation; hose5 a specimen damaged automatic stop protection function, for nobody guard,6 ...