Greenhouse irrigation with various types of steel pipe

My friend Jack is a farmer with lots of greenhouse for plantation of watermelon, tomato, cucumber and so on. Under this situation, with the coming of the grow up of those vegetables, there are more water needed transplanted by various steel pipes from ERW steel pipe to seamless steel pipe and so on. First of all, for different water volume, we should choose different types of steel pipe. For example, tomato and cucumber needs less water than watermelon, under this situation, we can choose the small-bore diameter steel pipe and seamless steel pipe would be a nice choice on the list. Second, considering the price of various steel pipes, we know that seamless steel pipe is expensive than ERW steel pipe. For water supply, we can choose the ERW steel pipe.