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Showing posts with the label API 20E Bolting

Leave Corona: Prepare for Life after Lockdown

Thanks to Lockdown: We all have got basic training on how to survive with corona Government bought time to prepare themselves; they could prepare isolation facilities, arrange for handling large volumes, establish supply-chain for medical aid Now it is time that we start preparing to open-up to regular lives!!! Remember !! the regular life would now be a little different with inclusions of masks, sanitizers and social distancing into our lifestyles. We may have to make minor lifestyle changes for another 1.5 - 2 years’ time or at least till one gets access to medicines/vaccines. Not that government will say “lock-down is over” and lo!! we can move now freely without any corona risks. Instead, whenever we open after the lockdown, we are surely getting exposed to the risks of getting infected. We need antibodies to be able to withstand the effects of virus – cold, fever etc., which will be generated only whence the vaccine gets introduced to our bodies. Think seriously, ca...

Difference between ASTM A194 Grades 2H and 2HM

What makes 2HM different from 2H? Does the M stands for ‘Metric’? Although in many cases ‘M’ stands for Metric, in this case it is not so. Nuts of Grade 2H indicate that the alloy steel used for nut is quenched and tempered whereas in case of Grade 2HM the nuts are additionally tested 100% for hardness. Both these nuts can be manufactured by means of any of the processes - hot forging, cold forging or machining but the material must be heat treated. 2H heavy hex nuts are used in high temperature and high pressure services, with adequate strength and engineering to withstand extreme conditions. 2HM nuts are also produced in a similar way, yet have low proof load values and hardness. So, while 2H nuts can be substituted for 2HM but vice versa may not be true. The similarities and differences in these two grades are: Chemical composition of both grades 2H and 2HM is same. Refer https://nuboteck.blogspot.com/2020/05/api-20e-bolting-astm-a194.html The main difference i...