... , the hose bending, wire rope elongation, breaking force, pull-out force, the bending of the flexible shaft, temperature resistance, ... products are advanced level in the domestic counterparts. The PULL technical indicators1. flexible shaft :a.pointer swing : bending ... and casing sliding resistance force ≤ 3Nc.casing cap and casing pull out force ≥ 70Nd. rope breaking force > 4120Ne.Steel elongation: § ...