The customer purchases galvanized steel pipe from our factory. The purpose of steel pipe purchase is to make fence. The surface treatment of steel pipe purchased by the customer is normal treatment. Because the fence is outside,So we suggest that the customer purchase steel tube surface treatment is pre galvanized steel pipe , hot dip galvanized steel pipe ,powder coating steel pipe .our factory produce pre-galvanized steel zinc coating (40–80G/m2),Hot dip galvanized steel pipe zinc coating (220G/M2). This surface treatment is more durable. We are in order to let the customer low price purchase the quality good product.The final customer adopted our advice.We suggest different products for different purposes. Because we want customers to purchase high quality products at a low price. We take every customer seriously. We and customers become long-term partners and best friends.