Lining chain mesh FHM
The heavy FHM-type welded chain support meshes made of spirally rolled bars or spirally rolled and smooth bars are designed for the frame spacing of 0.4m to 1.5 m.
They are used as the lagging for the support of narrow workings interacting with KS/KO-21, V21, V25, V29, V32, V34, V36, V44 profile shapes in conformity with PN-90/G-06011. “Workings supported with the frames made of channel shapes. Requirements and acceptance tests”.
The construction of the heavy FHM chain support meshes features very high strength exceeding the value of 6.25 kNm as required under the standard making it suitable in particular for hard geologic conditions.
| The heavy FHM chain mesh |
| Type: |
FHM |
| Version: |
Heavy |
| Frame spacing: |
400 to 1500 [mm] |
| Mesh width: |
500 [mm] |
| Mesh length: |
488 to 1588 [mm] |
| Mesh eye size: |
100x100, 100x50 [mm] |
| Support shape type and size: |
KS/KO-21, V21, V25, V29, V32, V34, V36, V44 |
| Longitudinal bar: |
Ø 6,5 mm |
rolled spirally and smooth bar |
| Lateral bar: |
Ø 4,6 mm |
rolled spirally and smooth bar |
| Tie bar: |
Ø 8,0 mm |
rolled spirally and smooth bar |