A.多層股不旋轉(zhuǎn)鋼絲繩 B.密封鋼絲繩 C.半密封鋼絲繩 D.扁鋼絲繩
A.普通圓股繩 B.特殊股繩 C.異形股繩 D.同形股繩
A.點(diǎn)接觸鋼絲繩 B.線接觸鋼絲繩 C.段接觸鋼絲繩 D.面接觸鋼絲繩