Every child is the angel of a parent. Parents always want to give the best to their children. In the face of their soft and fragile parents, parents try their best to avoid them. With the passage of time, the child's search for Yu Qiang is full of curiosity about the world, and parents' worries will only increase. At the age when the children learn to ride a bicycle, parents are smashing their hearts, fearing that they will make mistakes and injuring their children. Many parents will buy children's helmets for their children. Most people think that wearing a helmet for children is a simple matter, but most people still make mistakes.
BRIGHT STEEL BAR
Bright steel bar is carbon or alloy steel bar with shining bright surface which is improved by cold drawing, peeling, turning, grinding and polishing over hot rolled black surface bars. By cold drawing, the steel bar yield strength and tensile strength will be improved. By peeling and turning, the surface imperfections will be removed. By grinding, the diameter tolerance will be more precision. By polishing, the surface will be much more shining.
Except the shining bright surface, comparing with the hot rolled black surface bars, the bright steel bars has better surface roughness, better roundness, straightness, more precision size tolerance etc.
Heat treatment such as annealing, normalizing, quenching and tempering will be done before do cold finishing on the hot rolled bar to get bright steel bar, in such condition, the steel bright bar will get most suitable mechanical properties to meet different application requirement.
The advantages of steel bright bars we supply:
1) Big stocks of hot rolled round bars or wire rods as raw materials
2) Heat treating furnaces to adjust the mechanical properties
3) Full sets of testing equipment to test the sizes, mechanical properties and microstructure.
4) Multiple packages to avoid broken packages and anti-rusty
Diameter tolerance
+0/-0.02mm
Straightness
0.5mm/m
Surface roughness
0.4um
Roundness
80% of diameter tolerance
Diameter range
14mm to 100mm
Steel grade
Kinds of carbon steel and alloy steel
Length
Any length can be cut with precision tolerance
Bright Steel Bar,Bright Steel Round Bar,Steel Bright Bar,Bright Polished Steel Bar,Alloy Steel Bright Bar Manufacturer SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.sdthreadedrods.com
Most parents will walk into a misunderstanding, thinking that if the child wears a helmet, everything will be better and safer than riding without a helmet. Obviously, this statement is only half correct. In fact, whether it is adults or children, once helmets are worn incorrectly, the protective effect of helmets will be significantly reduced. General merchants will only sell standard size helmets for sale to you. They rarely contain instructions and guide people to wear properly. In order to protect the children's riding safety, parents should understand the correct way to wear a children's helmet.
First of all, parents should use a soft tape measure around the largest part of the child's eyebrows (1 inch <2.5 cm>), measure the length of the child's head and pick up the child's helmet. Follow these three steps to help your child wear a helmet.
Tip one:
Firmly wear the helmet and make sure it is not shaken. This action is effortless and takes only 5 minutes. At the time of purchase, ask the salesperson how to adjust the straps. Through the professional demonstration of the salesman to understand the correct way to wear, observe the appearance of the child after wearing.
Tip two:
When the helmet is worn, the child's forehead is not exposed and the helmet must be worn horizontally. Most people try hard to wear behind their heads to reveal their forehead, and this is exactly what most people will make. If they accidentally hit the handlebars, this will not protect the head. In fact, the helmet's brim should be about 1 cm above the eyebrows. Wearing a low position can protect the forehead that may be injured in an impact collision without blocking the line of sight.
Tip 3:
Check whether the adjustment belt is comfortable and adjust the tightness. When fastening the children, look to see if their heads can turn freely and tell them to look up or look down to see if the child can breathe smoothly. The adjustment belt needs to be fastened. Many parents have neglected it. A gap of 1 finger size is enough between the neck and the adjusting belt. If it is too loose, the impact may shift and the head cannot be protected, which increases the security risk.
At the same time, it is recommended that parents take the time to check their children's helmets each week to determine whether the adjustment belt is running or deformed. Before riding, check again whether the child has buckled the adjustment belt. Don't be surprised because of a momentary carelessness.
