Product Name: MF30 rock bolt friction stabilizer pipe joints are highly dedicated support supplies, is the roof of underground culverts and other projects supporting the use of advanced materials, with a manufacturing process is simple, easy to use, in the underground shotcrete support having a strong anchor, tensile strength, and have a strong expansion force, so that the whole roof to become one. Model seam pipe anchor meaning and Size: seam pipe anchor Model / Length (mm) represented by MF outside diameter (mm), where M represents "anchor." F means "seam tube." If MF43/1600 said seam pipe anchor, an outer diameter of 43mm, a length of 1600mm. Special models can be drawing processing technical data MF33 MF40 MF47 drilling diameter (mm) 31-33 35-38 43-45 optimum length (m) 0.92.4 0.9-3.0 0.9-3.7 rod pull-off force (kn)> 90 > 110> 110 early anchor force (kn) 25-53 25-53 53-89 Contact: Wu Jingli Mobile: 18653822725 landline :0538-8530018 QQ: 635395409 Fax 0538 -8530316