马耳他幸运飞艇冷热走势

Inquiry List | Sitemap

PROFESSIONAL AUTO PARTS SUPPLIER

Changzhou Hongsheng Machinery Fitting Factory
Home » News » Industry News
Industry News

How to judge the mechanical performance of wheel bolts?

Time: 2017-07-30

Now,in the market,all of wheel bolts almostly are claimed to be 10.9 grade.But,it is a important problem that how to identify the real 10.9 grade wheel bolt.
马耳他幸运飞艇冷热走势Actually,the judgment based on the material,hardness,tensile testing and torque testing as well as anti-fatigue testing.

We insists on the imported material SCM435 to produce 10.9 grade wheel bolt,.Besides,it must be heat treated for 72 hours in the fully enclosed vacuum oven.
马耳他幸运飞艇冷热走势In addition to the hardness of wheel bolts rech the standard of 10.9 grade,the tensile and torque must also meet the required standards,as our latest TUV test report showing:

If you want to know more about wheel bolts or wheel nuts, visit our website:l2qx35.cn.

Menu
pk10微信群或者飞艇群 北京幸运飞艇开奖直播 北京pk10幸运飞艇直播 幸运飞艇计划软件免费 天天幸运飞艇计划软件 免费幸运飞艇计划手机 幸运飞艇开奖结果图 全天幸运飞艇精准计划 幸运飞艇人工计划数据 幸运飞艇app主播 幸运飞艇【上恒达集团~HD161。COM~平台】 幸运飞艇【上恒达集团~HD161。COM~平台】 幸运飞艇【上恒达集团~HD161。COM~平台】 澳门百家乐【上恒达集团~HD161。COM~平台】 澳门百家乐【上恒达集团~HD161。COM~平台】 澳门百家乐【上恒达集团~HD161。COM~平台】 六合彩公司【上恒达集团~HD161。COM~平台】