• National Clamps
    • Over 95% market share for Lifting clamps in Korean Shipbuilding Industry
    • Over 35 years of proven safety history in Korean shipbuilding industry
National Clamps


  • Screw Clamp for Guide Rope


Products Screw Clamp for Guide Rope
Model NPC-UA
Manufacturing Origin South Korea
Factory Busan, Korea

    A clamp for guide rope used to control the direction of a work piece when  transporting or loading a variety of blocks and work pieces by a crane in the ship shop at shipyards.


WLL(TON) Jaw Opening A1 B C D1 D2 E F ØG I J K Weight(kg)
0.15 0-25 28 18 104 11 30 18 62 22 8 12 22 0.4
0-40 43 19 121 11 35 19 67 22 8 12 22 0.45


  • A light and convenient clamp which is made of special alloy steel to help workers safely work.
  • The NPC-UA is a safe clamp designed to prevent a work piece from slipping  because the end part of the body is manufactured to be diamond-shaped  teeth. The end part of the body works as gearing at the opposite side of the screw.

[How to use]

  • Insert a work piece into the inside end of the clamp's jaw opening and then completely tighten the screw.


  • Do not exceed the rated capacity specified on the clamp.
  • Use a work piece only which falls within the jaw opening range specified in the instruction manual.
  • Do not use other metals with this model except steel.
  • Before use, always check the abrasion of the jaw and the screw .
  • Do not lift with this model.
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