For gates on a line fence, I'll buy the good tube gates as long as there will be no crowding. For corrals and anywhere else that the cows may bunch up, I use 2 3/8 upset tubing. Its schedule 80 pipe and is doesn't make any difference weather its a 200# calf or a 2000# bull, the gate is not going anywhere. Due to the weight of them, I don't like to make them longer than 12 foot.