Any reason to go for B class GI pipes? Other than anticorrosive features?
We have used MS pipes.
Pipe used - 1.5 inch 16 gauge MS pipe (Called coil tube in Mysore)
Weight of pipe for 20 feet length - 13 kg.
Cost of MS steel pipe - Rs. 56 per kg - For 13 kg - 728
We have used 1 pipe for 2 partitons, that is 10 feet per partition.
We have done C shape where length - 4 feet top and 4 feet bottom and height is 2 feet. Check attachments.
So cost for 1 partition is Rs. 728/2 = Rs. 364.
Bending charge is Rs. 100 per partition.
Anticorrosive coatings like Zinc Chromate followed by 2 coats of oil paint of your choice - Max. Rs. 20 per partition.
So total cost for 1 partition - 364 + 100 + 20 = Approx.Rs. 500. + Transport and installation extra as you have pointed out.
For 1 partition that you have done, you will get 3 partitions.
The partition is welded to vertical support, rarely cows will break the welded joint, you can weld it back.
As it does not come in contact with water or urine, corrosion is very less.
We have kept small welding set in our farm and do all alterations ourselves, its not that difficult.
Other regular maintenance is repainting with anticorrosive coating maybe once in 2 years depending on fading away of the coats.
I feel the cost savings in the partition intially justifies the extra small bit of work that needs to be done later on.
GI pipes are very useful in places where there is always water exposure, in this case its not required.
Think about it, personally I dont see any issues.