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  When Prestressed concrete steel strand is coated with a layer of grease and plastic sheathing, in the engineering construction, the steel strand will be separated from the concrete and loose as it's embedded with grease and plastic sheathing, remaining an unbonded state, it's called Unbonded prestressed concrete steel strand.
  
  Features
  Made with steel wire or strand, small friction loss, no need of a secondary filling, and convenient construction.
  Technical Parameters
 Prestressed Concrete Steel Strand Anti-corrosion Grease Mass Sheathing Thickness Friction Factor
Nominal Diameter
mm
Nominal Section
mm2
Nominal Strength
MPa
g/m mm µ k
9.5 54.8 1720
1860
1960
≥32 ≥0.8 0.04~0.10 0.003~0.004
12.7 98.7 ≥43 ≥1.0
15.2 140 ≥50 ≥1.0

  Technology Standard
 
  The implementation standard is JG161-2004, Unbonded prestressed concrete steel strand with other standards can be provided according to customer's requirements, and the sheathed color of Unbonded prestressed concrete steel strand can also be determined by the customer.

  
 
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