Assemble the frame pieces with galvanized steel corner brackets.
													
																	How to build a wood fence gate with metal posts. 
									
	
		
	
																	Metal posts last way longer sometimes decades than wood because don t rot or warp. 
																	A third option is to use the following u bolt type hinge point mounted on the post. 
																	Wood posts cost less than metal. 
																	First construct a metal gate frame using thinner steel pipes than you used for the posts to reduce the weight of the gate. 
															
													
									
	
		
	
																	The downside to building a fence with wood posts is that you ll likely need to replace the fence in 7 10 years. 
																	Then use a lag bolt hinge pin screwed into the gate framing. 
																	This style of wooden fence picket nests together to create a strong fence with little to zero visibility through the fence. 
																	Alternatively you could drill a horizontal hole through the metal post and install the bolt type hinge pin to be mated with the type of bolt on hinge strap in the second following picture.