Plain PC Wire
Materials: Carbon steel.
Plain PC Wire Diameter: 4 / 4.5 / 4.8 / 5 / 6 / 6.25 / 7 / 8 / 9 / 10mm.
Standard: BS5896 GB/T5223-2002 ASTM A421 ASTM A881/A881M.
Tensile strength: 1570Mpa 1670Mpa 1770Mpa 1860Mpa.
Surface: smooth.
Coil weight: 0.8 to 1.5T.
Raw Material Requirements
PC Wire’s raw material mainly SWRH77B and SWRH82B high-quality carbon wire rod. The main requirements for the Steel Rod as follows: Size, shape, weight and allowed deviation,grad and chemical composition, smelting method, delivery state, mechnical properties, Decarbonization layer,microstructure, surface quality and special requirements.
After the wire is rolled, sitaiermo is used to control the cooling to obation more than 85% of the saodenification rate.Generally according to the normal process of production of the coil can meet the prestressed concrete steel wire and wire production requirements.
| Nominal diameter (mm) | Tolerance (mm) | Tensile strengthNo less than (MPa) | Off-proportion extension stress no less than (KN) | Elongation no less than L0=200 mm (%) | Bending test | Relaxation value 1000h no more than | ||
|---|---|---|---|---|---|---|---|---|
| Times/ 180° No less than | radius (mm) | Ⅰ | Ⅱ | |||||
| 5.00 | ±0.05 | 1470 1570 1670 1770 | 1250 1330 1410 1500 | 4 | 4 | 15 | 8 | 2.5 |
| 6.00 | ±0.05 | 1570 1670 | 1330 1420 | 4 | 4 | 15 | 8 | 2.5 |
| 7.00 | ±0.05 | 1470 1570 | 1250 1330 | 4 | 4 | 20 | 8 | 2.5 |