Features:
1) Product : concrete screws
2) Material: C1022, case hardened
3) Surface: zinc plated yellow
4) Sizes: 7.5x50-7.5

Concrete screws

1) Product : concrete screws
2) Material: C1022, case hardened, surface hardness HV450-750, core hardness HV270-           390, carbon penetration depth 0.15-0.30mm
3) Surface: zinc plated yellow
4) Sizes: 7.5x50-7.5x200

Note: the part hereof only shows our manufacturing capabilities, if customers have any parts of similar manufacturing methods,   please send us the drawings and specifications for our accurate quotation.