Shanghai Sunland Industrial Co., Ltd is the top manufacturer of Personal Protect Equipment in China, with 20 years’experience. We are the Chinese government appointed manufacturer for government power,personal protection equipment , medical instruments,construction industry, etc. All the products get the CE, ANSI and related Industry Certificates. All our safety helmets use the top-quality raw material without any recycling material.
What kind of helmet to buy by electric bicycle
We provide exclusive customization of the products logo, using advanced printing technology and technology, not suitable for fading, solid and firm, scratch-proof and anti-smashing, and suitable for various scenes such as construction, mining, warehouse, inspection, etc. Our goal is to satisfy your needs. Demand, do your best.
Professional team work and production line which can make nice quality in short time.
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Suspension bands inside the ,helmet, spread the ,helmet's, weight and the force of any impact over the top of the head. A suspension also provides space of approximately 30 mm (1.2 ,inches,) ,between, the ,helmet's shell, and the wearer's head, so that if an object strikes the ,shell,, the impact is less likely to be transmitted directly to the skull.
Horizontal ,distance between, the headband and the inside of the ,shell, or any protruding part of the inside of the ,shell,. Only informative sections of standards are publicly available. To view the full content, you will need to purchase the standard by clicking on the "Buy" button.
The suspension system inside the hat is designed to help absorb and dissipate impact while keeping a clearance ,between, the head and ,shell, of the hat. The class of hat is usually noted inside the hat ,shell,. Types and Classes. Type 1 - ,Helmets, intended to reduce the force of impact resulting in a blow only to the top of the head.
The crown straps, when assembled, shall form a cradle for supporting the helmet on the wearer's head, so that the distance between the top of the head and the underside of the shell cannot be adjusted to less than 1-1/4 inches as measured under test conditions in 8.3.2. 7. …
inch, blue flame with an inner cone of 1.0 ,inch, The temperature of the flame at the tip of the inner cone shall be 1472 – 1652 degrees F. The flame shall be applied so the inner cone is within 0.08 ,inches, from the ,helmet, surface. The flame is applied for 5 seconds The sample is inspected for any visible flame,
Comfortable ,distance between, the visor and the . user’s face. Good airflow prevents fogging . Allows to ,wear, glasses . Dual position easy lock. Optimum ,safety,: The visor doesn’t rise or fall unexpectedly. Easy grip zone. Optimal handling with. or without gloves. Replaceable visor. Easy replacement of worn-out visors. Headlamp clips ...
For the Inner ovals, I found it was easier to wait until my outer ,shell, was welded, and then I took a tracing in cardstock (NOTE: BE SURE TO ADD ABOUT 1/8 ,INCH, ALL THE WAY AROUND YOUR OVAL PATTERN BEFORE YOU CUT IT OUT OF METAL, OTHERWISE IT WILL FALL THROUGH!). it also helps to wait for the two ,inch, wide band which wraps around the ,helmet,, so you can get an accurate measurement of the …