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.
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17/9/2020, · ,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.
29/1/2019, · The retention system ,test, involves placing the ,helmet,’s retention straps under ,load, in tension. For this ,test, the ,load, is progressive; first a ,load, of 50 lb. is applied for 30 seconds, then it ...
For impact ,testing,, the typical ,test, apparatus consists of a rig that drops a helmeted headform in a guided freefall to an anvil on the floor. You strap the ,helmet, on the headform, turn it upside down so the ,helmet, hits the anvil first and drop it onto the anvil. The ,helmet, is oriented before each drop to ,test, it's most vulnerable areas.
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.
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, …
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.
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.
The ability of a ,helmet, to withstand deformation due to any force acting on it is determined by subjecting it to a rigidity ,test,. In this ,test, the ,helmet,, without the head-form, is placed between two horizontal flat parallel plates and is subjected to a small initial ,load, and subsequently to a major ,load, …