M8 M16 Brass L & J Hook Bolt with nut washer T1 T2 T3 Metal bolts Brass plating

M8 M16 Brass L & J Hook Bolt with nut washer T1 T2 T3 Metal bolts Brass plating

Product Description:
1,Fixed footbolt is also called short footbolt, it is poured together with the foundation and used to fix the equipment without strong vibration and shock.
2,Activity foot bolt also known as long foot bolt, is a kind of removable foot bolt, used to fix the work of strong vibration and shock of heavy machinery and equipment.
3,Expansion anchor anchor bolt is often used to fix the static simple equipment or auxiliary equipment. Expansion anchor anchor bolt installation should meet the following requirements: the distance from the bolt centre to the edge of the foundation is not less than 7 times the diameter of the expansion anchor anchor bolt; installation of expansion anchor anchor bolt foundation strength shall not be less than 10MPa; drilling holes shall not be cracked, and attention should be paid to preventing the collision of drilling bit with the reinforcement bars in the foundation and the embedded pipe; the diameter and depth of drilling holes should be matched with the expansion anchor anchor bolt.
4,Bonding anchor bolt is a kind of anchor bolt commonly used in recent years, and its method and requirements are the same

Installation

1,One time burying method: when pouring concrete, bury the ground bolt. When the tower is controlled by tilting, the anchor bolts should be buried at one time.
2,Pre-reserved hole method: When the equipment is in place, clean the holes, put the foot bolts into the holes, and then use non-shrinkage fine gravel concrete, which is one level higher than the original foundation, for pouring and compacting after the equipment is positioned and corrected. The distance from the centre of the footbolt to the edge of the foundation should not be less than 2d (d is the diameter of the footbolt) and should not be less than 15mm (not less than 10mm when d≤20), and not less than half of the width of the anchor plate plus 50mm, and when it cannot satisfy the above requirements, appropriate measures should be taken to strengthen it. The diameter of the anchor bolts for structure should not be less than 20mm. when subjected to seismic action, it should be fixed by double nuts or other effective measures to prevent loosening, but the anchoring length of the anchor bolts should be increased by 5d compared with that of the non-seismic action.

Installation planning of the foot bolt Foot bolt loose in the foundation of the treatment in the near tightening of the foot bolt, may be pulled out of the bolt live, at this time should be the first bolt adjusted to the original position, and the bolt around the foundation to shovel out enough position, and then weld the bolt on the longitudinal and transverse two U-shaped rebar, and finally water will be cleaned in the pit and grouting, to be the concrete is solidified to the design strength, and then tighten the live foot bolt deviations in the treatment of the living foot The processing method of bolt deviation is roughly the same as that of the dead foot bolt, only that the foot bolt can be pulled out and processed. If the bolt is too long, it can be cut off a section on the machine and then set the thread; if the bolt is too short, it can be elongated by hot forging method; if the position does not match, it can be corrected by bending method.
Application industry: suitable for all kinds of equipment fixing, steel structure foundation pre-embedded parts, street lamps, traffic signs, pumps, boiler installation, heavy equipment pre-embedded fixing, etc.

Applications

Galvanising is a surface treatment technique whereby a layer of zinc is deposited on the surface of a metal, alloy or other material to provide aesthetic appeal and to prevent rusting. The main method used is hot-dip galvanising.
Zinc is soluble in acids and alkalis, so it is called an amphoteric metal. Zinc hardly changes in dry air. In humid air, a dense film of alkaline zinc carbonate is formed on the surface of zinc. In containing sulfur dioxide, hydrogen sulfide and marine atmosphere, zinc corrosion resistance is poor, especially in the high temperature and high humidity containing organic acid atmosphere, zinc coating is very easy to be corroded. The standard electrode potential of zinc is -0.76V, for the steel substrate, zinc plating belongs to the anodic plating, which is mainly used to prevent corrosion of steel, the advantages and disadvantages of its protective properties and the thickness of the plating is very large. Zinc coating can significantly improve its protective and decorative properties after passivation treatment, dyeing or coating with gloss protection agent.

Ground bolts can be divided into fixed ground bolts, movable ground bolts, expansion anchor ground bolts and bonded ground bolts. According to the different shapes, they are divided into: L-type embedded bolts, 9-type embedded bolts, U-type embedded bolts, welded embedded bolts, and base plate embedded bolts.

Specially for buried in the concrete foundation, for fixing all kinds of machines, equipment base with. 7 word foot bolt for the foot bolt in the more commonly used one. Generally made of Q235 steel, high strength Q345B or 16Mn material processing, but also 40Cr material processing 8.8 strength products, occasionally also used in secondary or tertiary rebar processing.

Ground bolts have wool, thick rod, thin rod in different forms of points. Raw material that is the raw material steel is not reformed, with round steel or wire directly processed; thick rod or known as A-type, thin rod or known as B-type, are reformed by the steel into the corresponding requirements of the rod diameter after processing and become. Welded anchor bolts are made of single head bolts welded with reinforced iron plates. It has strong resistance to pulling and pulling. According to the use of different conditions, respectively, can reach 3.6 grade, 4.8 grade, 6.8 grade, 8.8 grade, etc. 3.6 grade 7 words The tensile capacity of the ground bolt for the tensile capacity of the steel itself. Q345B or 16Mn raw materials directly processed ground bolt its tensile capacity can reach 5.8 grade tensile strength. 4.8 grade, 5.8 grade, 6.8 grade and 8.8 grade tensile strength Refer to GB/T3098.1 for the provisions of the mechanical properties.

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