Model meaning and Size: 
 Seam Model with MF bolt diameter (mm) / Length (mm) that, where M means "anchor." F means "slit tube." If MF43/1600 said slit tube bolt, the outer diameter of 43mm, length 1600mm. 

 Seam of the bolt size specifications below: 
 Unit: mm 
 Project MF33 MF43 
 Standard Tolerance Standard Tolerance 
 Rod diameter 33 ± 0.5 43 ± 0.5 
 Length 1400,1600,1800,2000 
 Slit width 10 ± 1.0 14 ± 1.5 
 Wall thickness of 2.5 ~ 3.0 (Q235A-level cold-rolled steel) 
 Shoot length of the first 40 to 50 
 Tip diameter of 27 ± 0.5 37 ± 0.5 
 Trays L × W 120 × 120 ± 2.0 150 × 150 ± 2.0 
 Height of 15 ~ 25 ± 1.0 15 ~ 25 ± 1.0 
 Thickness of 4 to 6 
 Diameter 35 ± 0.5 45 ± 0.5 
 Recommended diameter of drill blank 31 41 
 Distance from the end of the retaining ring 4 to 6 
 3 Technical requirements 
 1) Seam of the bolt surface should be smooth, no serious injury, corrosion. Welds shall be free of cracks, holes slag, does not allow burn through the wall. Tray in the rod should be able to move freely. Retaining ring interface and pipe vents dislocation between 170o-190o appropriate. 
 2) Pull off the retaining ring weld strength ≥ 80kN, ultimate tensile strength rod ≥ 110kN, first anchor ≥ 25kN / m, tray capacity ≥ 65kN. 

 4 product 
 First using a pneumatic drill to drill bolt holes in the roof, the tray set into the anchor rod, and then hammers the rod into the bolt hole so the tray and attached solid roof Bangdai. 
 Users in the use of bolts, the hole diameter than the selected reference to the above table, should be based on the specific conditions of the rock, according to the provisions of the standard selection of GBJ86. 

 Packaging and storage of 5 
 Bolt with bundled package, with the rod tied into a group of 10, the tray 50 tied into a group, joint water management should pay attention to bolt storage, anti-corrosion. 

 6 Users can also factory specifications of the slit tube processing special bolt, welcome customers to come, call, write purchase.