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International standards for safety shoes
  Safety shoes are shoes and protective safety class class shoes collectively, generally refers to work on different occasions wearing protective foot and leg from foreseeable harm footwear. Safety shoes are high-tech and high value-added footwear, safety footwear production process of raw materials, auxiliary materials, chemical materials, machinery and equipment requirements are high, currently many of a certain size and grade footwear enterprise has set its sights piece of safety shoes used to be occupied areas of the market in developed countries.

  1, European standard EN344: 1997 "special security, protection, and work shoes"
  The European standard is CEN/TC61 "foot and leg protective equipment" Technical Committee to develop, by the BSI as its secretariat.
  The standard models for the design of safety shoes, whole shoe uppers, shoe, tongue, insole, outsole and other structures and performance indicators were provided. Each item specified in the standard test methods and other similar standards similar to its principle of the method is also generally applicable to most safety shoes, the main indicators are:
  a. Baotou impact resistance steel with a prescribed weight impact test hammer, Baotou Baotou upon impact should be less than the clearance height of the specified value, and Baotou in the axial direction of the test should be no penetrating cracks. It is noteworthy that the national standards of the hammer weight, size, height and impact testing machine structure different from the requirements such as the actual test should be distinguished.
  b. puncture resistance test machine is equipped with a plate, nail plate is equipped with a test, the test is a truncated tip of the nail head, nail head should be greater than the hardness of 60HRC. The sole sample is placed on the test machine's chassis, the position can test for nail piercing through the outsole, the test nails to pierce the speed 10mm/min ± 3mm/min soles until penetrate far, record the maximum required force. Each four points selected on the sole test (of which at least one point of the heel), each point distance of not less than 30mm, and the distance from the inner bottom edge than 10mm. A non-slip bottom block, between the blocks should be pierced. 4 points in the two points should be located away from the implant bottom corner edge line distance of 10-15mm for testing. If the humidity will affect the results, soles should be soaked before testing plus 20 ℃ ± 2 ℃ deionized water 16 ± 1h.
  c. conductive anti-static shoes, shoes and shoes like electrical performance through in the dry and wet atmospheric adjustment, will be filled with people clean the ball and put it inside the shoe metal probe device, using a predetermined resistance testing instruments, measuring The first two probe between probe and the third resistor. Under normal circumstances, conductive shoes required resistance should not exceed l00K ohms; Anti-static shoes should be required 100K ohm resistor to 100M ohms.
  d. insulation performance with a shoe as a sample, the inner end of the thermocouple installed at the center of the connection area, and the person filling ball shoes. Adjusting the temperature of the sand bath pot to 150 ℃ disabilities 5 ℃, the shoe placed thereon, so that the sand contacts the shoe outsole, with the temperature of the thermocouple connected to the testing apparatus, measuring the temperature inside the end of the corresponding time , given the increase in the temperature curve. Calculated from the sample placed on a sand bath after 30min from the increase in temperature. General requirements insulated shoes inner bottom surface temperature increase is less than 22 ℃.
  e. heel portion of the energy absorption performance test instrument's maximum compression load 6000N, with a record load / deformation characteristics of the device. The shoe will take place with a steel plate, the test punch in the center portion of the inside of the heel against the inner sole. 3mm/min with disabilities speed 10mm/min load is applied. Draw the load / compression curve and calculate the absorbed energy E, expressed in joules.
  f. slip outsole for the standard specifies requirements for non-slip soles coefficient test, but the skid block designs, specifications, etc. made provisions, such as the thickness of the sole, skid block height, the distance between the edge of the sole, etc. are required.

  2, Standard: EN345-1 U.S. ANSI-Z41 China An1
  Function: Anti-smashing impact, anti-puncture, anti-static, water repellent, non-slip oil, acid and alkali, high temperature, wear cushioning, absorbent deodorant.
  Upper: Smooth leather imports, comfortable, breathable, waterproof wear.
  Inside: Gray Adams too pull + + absorbent cotton breathable fabric, anti-bacterial disinfectant, absorbent sweat.
  Insole: Foam PU, anti-static, good rebound, compression-resistant, breathable strong deodorant function.
Sole: color dual density PU / TPU even help one injection molded non-slip outsole can be buffered water pressure, comfortable, non-slip and super wearable.
Steel head: Europe (CE) China An1 standards, can withstand 200 joules impact force (23KG * 900mm> 15mm) or withstand 15KN static pressure.

  3, Canadian work safety shoes Standard
  This standard is based on the Canadian Standards Association (CSA) standard according to Z195-02: "Protective Footwear" and Z195.1-02: "selection, care, use of protective footwear Guide" may be.
  Range: workers may at the University of Toronto during surgery or occur within the workplace could harm suffered by the foot (Note: this standard, "worker", including medical personnel, staff, students and tourists).
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