T Post Mfg Return to Central California Businesses Directory T Post Mfg Claim Listing Return to Central California Businesses Directory Description Details Address 355 Prosperity Cir City Porterville State California ZIP Code 93257 Phone 559 781-8968 Listing Category Machine Shops (Mfrs) - Listings Please login to claim this listing. Username*: Email*: Password*: Log in | Lost your password?