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.
safety helmet mold making
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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Select ,test, location and depth at the point where the real foundation will be constructed, if possible. If the ,test, is performed in a ,test, pit, width of the pit should be at least 4 to 5 times of plate diameter. Apply the ,load, to the plate in steps by means of hydraulic jack pushing against the counter weight until reaching the maximum ,test load,.
The ,test, centres have a piece of kit that performs this ,test,. The ,helmet, is placed on a head shaped mould, which has ,load, detectors on it, the 5KG rounded striker is dropped on to the hard hat from a height of 1 metre, the ,load, cell. will record the force transmitted through the ,safety helmet,, for the ,helmet, to pass, the force. must not exceed 5kN.
Secondly, 113.4kg ,static, weight is added ,load, is applied for 120 seconds. The adjustable portion of the retention system ,test, device must not move more than 2.5cm between the first ,load, and the second ,test load,. Penetration ,Test,. SNELL & DOT use the same ,test,. A 3kg metal striker is dropped on to the ,helmet, mounted on head form from a height of 3m.
Proof ,testing,. The proof ,test, is required as a part of ‘thorough examination’ u/r 60(1) of GFR and no lifting machine or tackle should be used for the first time without this proof ,test,.. In general, the proof ,load, applied to chains, rings, hooks, shackles, and similar gear is twice the SWL.
18/9/2020, · ,Test, for Strength of Chin Strap. Using S hook, 10 kg ,load, is applied on chin strap. It should not break after 10min. Shock Absorption ,Test,. ,Helmet, should be subjected for at a temperature for 50 o c in oven for four hours and -10 0 c for four hours in refrigerator and finally to flow of water at a rate of 1 L/min for four hours at room temperature.
Safety helmet, should withstand the impact of a plumb ball of 500gm weight with conical steel point having an included angle of 36 degree or a spherical point of radius not more than 0.5mm, dropped from a height of 3 meter with pointed end downward onto the top of the crown of the ,helmet, without getting pierced, dented or suffering failure of any integral part.
S7.3.1 The retention system ,test, is conducted by applying a ,static, tensile ,load, to the retention assembly of a complete ,helmet,, which is mounted, as described in S6.3, on a stationary ,test, headform as shown in Figure 4, and by measuring the movement of the adjustable portion of the retention system ,test, …
Japan: ,Static, pull. ,Helmet, mounted on impact ,test, headform, initial preload of 5 kg applied and elongation marked, then ,test load, of 50 kg applied for two minutes and measurement of elongation taken, excluding movement of ,helmet, on headform. Strap must remain intact and not elongate more than 25 mm. Snell B90: Dynamic yank.
28/8/2009, · As rated ,load testing, is part of section 1910.179, employers are required to perform the ,test, on new and altered cranes in order to be compliant with the requirement in 29 CFR 1910.179(k)(1). Also, section 1910.179 contains other provisions that necessitate ,load testing, to ensure compliance.