Aluminum Street Light Pole Basic Knowledge
A.Aluminium alloy street lighting pole raw material
The aluminium street light pole used for spinning is all 6061 or 6063 aluminum alloy pipes of equal diameter. It is an excellent aluminum alloy building profile and is widely used in street lamps, flagpoles, etc., with high wind pressure resistance. , assembly performance, corrosion resistance and decorative properties. In addition, the light pole of aluminum alloy material is light in weight and environmentally friendly.
B.Aluminum street lamp pole formation
The formation of the aluminum alloy light pole body is formed by a large-scale full-CNC spinning device to form a tapered or profiled pole shaft during high-speed rotation, and the formed pole shaft will be polished to remove oil stains, burrs, and indentations on the surface of the pole body. Longitudinal welds are not allowed for all rods. For the sake of beauty, the aluminum alloy pole can also be power coated with other colors according to customer requirements.
C.Welding of aluminum alloy street lamp pole bottom plate
In order to ensure the strength of the aluminum alloy pole base, the aluminum street light pole’s base plate and pole shaft will be carefully and circumferentially welded top and bottom. The base of all aluminum alloy poles is made of 6061 or 6063 aluminum plate stamped by special mold, or A356 pressure casting. The welding of the bottom plate of the shaft is all automatic welding. In this high-quality welding process, the strength and aesthetics of the welding are guaranteed.
D.Aluminum alloy street pole electrical hole
Each aluminum light pole has an electrical hole for the junction box. We use advanced laser cutting machine to cut the door panel of the electrical hole. The door panel is cut from the shaft and is one of part of the pole shaft, so it is tightly fitted, and the gap between the door plate and hatch is less than 0.5mm. After deburring, the edge is smooth, which ensures the waterproofness of the electrical hole. The electrical hole is generally opened 500mm above the bottom of the pole (also according to the shape of the rod). At the rear of the door panel, inside the shaft, an aluminum rail is required to weld the junction box. The door lock uses a special lock with a stainless steel anti-theft screw to lock the door panel. It can only be opened by using the professional tools we provide, thus improving the anti-theft performance of the product.
E.Aluminum alloy street light pole grounding system
The aluminum strip is folded into an "L" shaped workpiece, one side of the workpiece is welded to the inner wall of the rod, and the other side is opened with a hole of M8 for grounding the wire.
F.Aluminum alloy street light pole strength treatment
The aluminum products processed by the aluminum alloy pipe factory are further annealed by the furnace to obtain the T0 state, also named the annealing state. In order to make the aluminum alloy poles have the strength of steel, all of our aluminum alloy poles must be quenched and aging to reach the T6 state to meet the international strength standards of aluminum rods.
G.Aluminum alloy street light pole surface treatment
1.Aluminum light pole clear anodized
Anodizing is an electrochemical process that produces an oxide layer on the surface of a metal by electrochemical means. The light pole is immersed in a cleaning and pretreatment tank prior to immersing the product in an acidic electrolyte bath. The current releases oxygen ions through the material that combines with the aluminum atoms at the surface of the component to increase the thickness of the native oxide layer on the aluminum. The thickness of the oxide layer is available in several different sizes, depending on the location of the installation and the local environment. After anodizing, the product forms a 20μm closed film layer to ensure the corrosion resistance of the lamppost in any natural environment, and to ensure that the rod has no obvious discoloration within 25 years. Unlike other coating options, this anodic oxide structure is fully integrated with the underlying substrate so it does not chip or flake off.
2.aluminum alloy street lamp post color
A.Aluminum alloy street light pole chemical coloring
The chemical coloration of aluminum and aluminum alloys is mostly carried out on an anodized film. There are few methods for chemical coloring directly on the surface of aluminum and aluminum alloys, and the resulting color film has the characteristics of wear resistance and corrosion resistance, and the color range is wide. However, it is generally not used as a protective layer alone, and it is often used as a background color on parts whose surface needs to be painted.
B.Electrolytic coloring of aluminium alloy street lamp pole
The color film obtained by the electrolytic coloring process of aluminum and aluminum alloy has good wear resistance, light resistance, heat resistance, and chemical corrosion resistance. It is widely used in the decoration and anti-corrosion of aluminum profiles for modern buildings. With the utilization and development of solar energy and the diversification of daily commodities, the electrolytic coloring process of aluminum and aluminum alloys will be more widely developed and utilized.
The electrolytic coloring process has the characteristics of color fastness and fading, and is the most widely used coloring method at present. Yellow, champagne, bronze, brown, black, etc. can be obtained by changing the coloring time.
C.Aluminum alloy street light pole spray
The surface of the aluminum alloy pole can be sprayed with colored polyester powder, which has the characteristic of bright color, anti-UV and no fading.
Note: Due to the difference in material between the aluminum alloy light pole, the bottom plate, the welding wire, etc., it is inevitable that a certain color difference will occur in the welded part after anodization. If you want to ensure the consistency of the color of the surface of the rod, it is recommended to use the surface treatment of spray or fluorocarbon spray.
Stainless Steel Street Light Pole
A.Stainless steel light pole raw material
The whole pole is made of stainless steel and has different grades such as 201, 304 and 316. The types of stainless steel street lamps are round straight light pole and conical shaped light pole. Conical street light is rolled by stainless steel plates. The height of stainless steel poles is generally 3 to 15 meter. The shape of street light pole commonly is round tapered, with a 3.34inch diameter taper at the top with a 7.87-inch butt diameter. The design of the upper and lower enhances the stability of the pole. Stainless steel light poles have the characteristic of strong hardness, corrosion resistance, beautiful appearance and smooth.
C.Stainless steel street light pole surface treatment
B.Stainless steel street light pole welding way
①Weld seam welding, as an important step in the formation of street light rods, has stringent requirements for the process. After the sheet is bent and formed by the plate bending machine, it enters the welding process, and the welding process called submerged arc welding. The process steps are:
1. Grinding treatment. Before welding, the welding position should be polished to prevent rust at the weld to cause bubbles after welding.
2.Straight line welding. Straight welding (also called submerged arc welding) of the polished tube blank, because the welding is fully automatic welding, it has very strict requirements for the treatment of the pre-tube blank. After welding, the welding line should be straight, and the whole is smooth and free of bubbles.
②Another welding process is automatic argon arc welding, which perfectly integrates the interfaces and does not see the shape of the welded joint. After finished the welding, it is also required to carry out ultrasonic flaw detection. Strict requirements, no one cannot be welded.
The surface of the pole is smooth and there must be no cracking, leakage welding, continuous air hole, undercut, and inequality. The linear error of the center line of the pole is not more than 0.02% of the length of the rod. The appearance of the rod has no unevenness and no trace. The appearance of the pole has no obvious defects, so the surface treatment of the stainless steel pole is very high.
1. Hot dip galvanized
The hot-dip galvanizing process consists of three steps: surface preparation, galvanizing, and inspection.
Surface treatment: For high-quality hot-dip galvanizing, steel must be properly prepared prior to immersion in a molten zinc bath. During the surface preparation stage, the material going through degreasing /corrosively cleaning, pickling and fluxing.
Galvanizing: After surface treatment, the steel is immersed in a bath of molten zinc. The zinc pot contains at least 98% pure zinc and is maintained at a temperature between 815º-850º F (435º-455º C). When the steel is immersed in the kettle, the zinc reacts with the iron in the steel to form a series of metallurgically bonded zinc-iron alloy layers, with the final top layer being 100% zinc.
Inspection: The inspection process for galvanized steel is quite simple. Zinc does not react with unclean steel, so a visual inspection of the product provides a good assessment of the quality of the coating. Coating thickness tests and ASTM-compliant tests will also be performed.
2. Satin-brushed finished
Brushing the stainless steel produces a distinctive look with a muted luster and a pattern of fine parallel lines. It has strong decorative appeal without being too reflective, as too much reflectiveness can be undesirable. For example, overly reflective stainless steel accents on a building could be blinding in bright sunlight. The drawbacks to this finish include reduced corrosion resistance because the grooves of the finish are susceptible to rust.
Mirror polishing is highly reflective and is made of polished stainless steel. The polishing process enhances appearance and consistency, making cleaning easier. It also masks the sequelae of soldering and masks surface damage.
Mirror polishing is made by mechanically treating the surface with a series of tapered abrasives. Alternatively, a special rolling procedure can be used which simulates the appearance of mechanical wear. At this stage, deep scratches must be removed because any surface defects are very noticeable on the finished product. The final process involves polishing the surface for 5-10 minutes to form a mirror-like highly reflective surface.
Comparison of Different Materials
A.Advantages and disadvantages of aluminum alloy street light poles
• The density of aluminum is 2.7g/cm3, it is 1/3 of the steel, so the aluminum is much lighter than steel.
• Easily machining(Drill, Cut, Mill Punch, Bend, Weld, etc).
• Stable Chemical performance, recycle, aluminum is a green metal which is friendly to the environment.
• Excellent corrosion resistance.
• Excellent performance on surface finishing.
• The melting temperature of aluminum is lower than steel and low cost for recycling to all of the world’s energy-saving emission reduction.
• The price is experiencing than other material
• When mass production is made, raw materials need to be purchased.
• Not suitable for large area welding
B.Advantages and disadvantages of stainless steel street light pole
• High corrosion resistance
• After the polished, the surface is smooth and bright
• Long service life, Waterproof and lightning protection
C.Advantages and disadvantages of Q235 street light pole
• Good strength
• Easily rust and corrosion
• Weights three times as aluminium and high freight cost
• Limited recycle value
• Galvanizing is hard for Environment
• Can not use plug-in installation
• the way for surface treatment is less
Advantages and disadvantages of fiberglass street light pole
• light in mass
• Good strengthPlug-in installation
• Short life
• No recycling value, very difficult to handle
• Ultraviolet damage is common
• Expensive maintenance costs
• Easy to be damaged by external devices
• Strength tends to decrease at low temperatures
Why Choose Us?
Yaolong is a company that continues to innovate and develop.We provides a huge variety of stylish outdoor architectural products, including commercial and architectural flagpoles, street light poles, garden light poles, landscape light poles, traffic light poles, bollard lights, security bollard.
Headquarters in foshan, Yaolong has set up 5 factories in China,total building size is about 40000㎡ with more than 200 employees.In addition,Yaolong street light pole suppliers is a modern enterprise which integrates R&D, design, production and distribution.
(1) 16m long bending machine. We can make 16m pole in one piece without joint. It will be stronger and safer.
(2) T6 heat treatment oven .With this process, the aluminum poles will be much harder.
(3) 12m long *3m wide precise and efficient laser cutting machine. It can cut the raw material up to 30mm thickness.Specially used for cutting door flame, logos on the top of bollard post, hollow patterns on stainless steel bollard, etc.
(4) Stable and automatic plasma welding machine.
(5) 15m long anodizing facility for the spinning aluminum pole. It improves the corrosion resistance a lot.
Rich export experience
Our company's main products are not only sold to domestic markets, but also exported to many countries like the United States,Canada,Australia,United Kingdom, Russia, Holland, Germany, Spain, UAE, Oman,Qatar,Saudi Arabia etc.