1.made of high-quality sisal fiber 2.strong pulling force,acid and alkali resistance, wear resistance, bitter cold prevention. ... of high-quality sisal fiber and have characteristics of strong pulling force, acid and alkali resistance, wear-resistance, bitter cold prevention ... 3-ply and 4-ply. The executive standard of sisal rope:GB/T 15029-94 NOMINAL DIAMETERmm THREAD DENSITY MINIMUM TENSILE ...