Keeping the expired cylinders in the house- and the bomb Keeping the same thing

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Keeping the expired cylinders in the house- and the bomb
Keeping the same thing. So let's not know,
How to know if the cylinder has a validity?

Most of us use gas-cylinders at home, and many times it is heard that people have died due to the cylinder blast, but many people do not know why it is blast. All things like cylinders have expired or expired dates which many of us do not know. Keeping the expired cylinder in house is equivalent to keeping time bombs.

The matter is how we recognize that the cylinder expires.

Expiry date is black-colored text typed in photos. Here A, B, C, D is indicated by the signal

A = First three months of the year such as January, February, March.

B = For the next three months, April, May, June. Likewise, C is defined by D in the order of the remaining six months. And at the end of the last two digits of the year, that means C13 (2013), if there is C18, in the months of July, August, or September 2018, your cylinder will expire.

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