Attention should be paid to the quality of elevator expansion anchor bolt:

(1) The surface rust, oil stain, burr weld bead on the wall of expansion bolt hole shall be cleaned up.

(2) After treatment, the contact friction surface shall meet the requirements of anti scratch coefficient. The expansion bolts used shall be provided with matching nuts washers, which shall be used as a complete set shall be interchanged.

(3) The friction surface of the treated components shall be stained with oil, soil other impurities during installation.

(4) During installation, the friction surface of the components shall be kept dry shall be operated in the rain.

(5) Check correct the deformation of the connected steel plate before installation.

(6) During installation, it is forbidden to hammer the expansion bolt to prevent the screw thread of expansion bolt being damaged.

(7) When using, the electric wrench should be inspected regularly to ensure the accuracy of torque operate according to the correct tightening sequence.

Suzhou Maolong Elevator Accessories Co., Ltd. products (elevator expansion bolts, Anka anchor bolts, etc.) are widely used in machinery, automobile, decoration, railway bridge, steel structure plant elevator company. It cooperates with universities, design institutes industrial research institutes to carry out various research development plans, so as to continuously improve R & D design ability. In addition to OEM, it is also an international ICI, air professional Supporting manufacturers.