邻居少妇张开腿让我爽了在线观看,国产亚洲精品精品漫画,蜜臀久热欧美,人妻少妇内射网

     
  中文版 English
 
Hot news:
  News
  Company news
  Industry News
  Current news
Hot Product
IPX1 IPX2 Drip Waterproof Test...
UL1439 Sharp Edge Tester
BND-TPK05 IEC 60529 Test Probe...
IEC62368 test probe kit BND-TP...
IEC 61032 Standard Test Probe ...
IEC60320 EN60320 Appliances co...
UL 498 Standard Plugs and Rece...
IPX1 to IPX4 Drip rain test an...
Vertical horizontal vibration ...
IP5X IP6X Sand and dust proof ...
climate constant temperature a...
IPX1 to IPX9 waterproof testin...
 
 
Industry News
Home  -  News  -  Industry News
What are the steel balls used in the laboratory?
From: BONAD  Date: 2023-12-26 16:53:36
The Impact Test Steel Ball is mainly used to determine the shell mechanical strength of appliances. The shells of the appliances should be sure that it can not appear the danger within the scope of the standard ranges when operating.it is suitable for the appliances which surfaces of shells are damaged and will contact with the hazardous parts, and also suitable for testing  mechanical strength of glass,PVC ,ceramics and so on.


The specification of the impact test steel ball:

weight

tolerance

material

hardness

227g

±5%

G20CrNi2Mo

HRC68-75

500g

±5%

G20CrNi2Mo

HRC68-75

535g

±5%

G20CrNi2Mo

HRC68-75

1040g

±5%

G20CrNi2Mo

HRC68-75


2,Method of Application

Lift the steel ball up to the appropriate height , perpendicular to the sample surface,and then release the ball impact samples.

Energy(J)=weight (kg)*gravity acceleration*high(m) the following table g =9.783


Energy

0.14J

0.20J

0.35J

0.50J

0.70J

1.00J


height

Steel ball 227g

63mm

90mm

157mm

225mm

315mm

450mm

Steel ball 500g

28mm

41mm

71mm

102mm

143mm

204mm

Steel ball 535g

27mm

38mm

68mm

95mm

137mm

190mm

Steel ball 1040g

14mm

20mm

34mm

49mm

69mm

98mm


3,Note:

■ The steel ball needs to be coated anti-rust oil to storage after

testing

■ Pay attention to protection work to prevent injury when testing.

■ Please put on protective goggles when testing the fragile

Sample.



SHENZHEN BONAD INSTRUMENT CO.,LTD, is a high-tech company in China, BONAD quality system has been strictly certified by ISO9001:2015. As a CIE Membership.


Our main products are Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, accessibility test probe and test finger, Glow Wire Test and Needle Flame Test,freezing load test package, soil moisture sensor, all kinds of gauges and so on.


BONAD have gathered lots of experienced researchers and administrators on this field. BONAD products are manufactured strictly in accordance with various EN, IEC, CE, UL, VDE, VS, JIS, ISO, CEE, BS, FMV, GB and other similar international standards. All products can pass CE certificate and authenticated by the third party lab.


Please feel free to contact us if you need any support.
sales Dep:Alice@szbonad.com,
Cell/WhatsApp:+8613380391156

 
 
Home  |  Products  |  News  |  About us  |  Feedback  |  Contact us  |  
Copyright © 2008-2015 Hong Kong Bonad Technology Limited | Shenzhen Bonad Instrument Co., LTD. All Rights Reserved.
 
    Add:C505, Hongdu Building,Bao\\\'an45 district,Shenzhen,518101,Guangdong Province,China    Tel:+86-13380391156    Fax:0755-23721200    Email:Alice@szbonad.com
 
日本不卡久草91av视频在线观看| 99热这里只有在线一区| 日韩伦理传媒色区| 日韩二三区三级懂色av| 美女激情黄色| 午夜福利经典| 亚洲色图欧美色图校园春色日本| 久久一道本综合| 欧美午夜成人激情在线观看| 日韩精品视频3P| 97青青草| 蜜臀视频啪啪啪| 日韩-欧美P片内射久久| 爱中文字幕久久涩| 国内自拍日韩AV| 欧美另类中文日韩| 欧美国产一区二区三区巨| 国产精品第37页| 又操骚熟妇| 狠狠躁夜夜躁人爽电影| 无码日本99久久久国产| 欧美 国产 亚洲一区二区| 欧美在线亚洲在线| 操死我av用力操我| 日本激情五月天婷婷| 日本不卡wwwav| 亚洲情一区二精品| 天天爽天天插天天操天天曰| 91色噜噜狠狠色婷婷| 久久涩综合| 内射少妇一区二区四区| 免费精品欧美成人网站在线观看免| 欧美日韩一区二区嫩999| 亚洲精品免费福利| 草棚--caoporn| 国产,欧美,日韩精品综合| 久久久久久久一级黄色| 麻豆视频成人黄上黄| m723国产1区2区| 日韩福利69| 高清一区国产在线观看无码|