Seam pipe bolt for sale
1. Seam pipe bolt is specificity strong supporting supplies, is the
underground culvert roof and other projects supporting the use of
advanced materials, has simple manufacturing process, easy to use
2. Have strong anchoring force applied in underground support,
strong expansion force, make the whole roof
1,Main technical performance
(1) the initial anchorage force: 3 ~ 7 tons;
(2) pipe ring pulled off load: 8 ~ 10 tons;
(3) pipe bolt tensile resistance: 12 ~ 13 tons;
(4) corrosion resistance than A3 steel, 20 to 30% more for use for
a long time
1)Seam pipe bolt surface should be smooth, no serious injury, rust.
Weld shall be no crack, no porosity, slag inclusion, are not
allowed to burn through the wall. The tray on the rod body should
be able to move freely. With the seam opening displacement between
baffle ring 170 o - 190 o is advisable.
2) baffle ring weld pulled off force p 80 kn, pushing rod body
limit 110 kn, or at the beginning of the anchor force p 25 kn/m,
tray or greater bearing capacity of 65 kn.
First with a pneumatic drill bolt holes in the roof, the tray set
into the anchor rod body, reoccupy FengChui will bar into the bolt
hole in the body, make the tray and roof help and paste. Users in
the use of bolt, the choice of the hole diameter in addition to
refer to the table, should according to the specific conditions of
rock, as stipulated in the GBJ86 standard selection.