Corrosion coupon

Dear Friends,

What is Corrosion coupon? What is the purpose of this? is measuring Corrosion of pipe?

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Merry Christmas and new-year wishes to everyone

ashokaa ...A corrosion coupon is a piece of the pipe (like a branch coupon or slug from that pipe), or similar mill spec steel as the pipe, suspended in the flow of the pipe header. It is exacted later to examine the corrosion effects of the commodity on that coupon to estimate corrosion effects on the header. Good Luck!

And the weight of each coupon is measured before and after a period of time in service. The weight loss of the coupon is an indication of the corrosion rate of the piping.

Corrosion coupon also use to measure the effectiveness of the corrosion inhibitor, the coupons should be placed at the other end of the pipeline, where the inhibitor has the least effect.

Thanks my friends,