Piping Technology and Products, Inc. recently designed and fabricated eighteen 1,200 lb to 5,800 lb. load PTP-2 type F size 100 to 150 variable springs for a company in South Korea.  These variable springs fabricated from carbon steel are designed for 200°F. They have an overall height of 9.5" to 11.5" and are designed for a travel range of 1/8" upward to 3/16" downward. Per the customer's request the variables were coated with a custom paint. To ensure quality, standard load testing was performed on the variables prior to shipping.