AllGas & Welding Supplies proudly serves the Catskill, Lower Hudson Valley, Eastern Pennsylvania and Northern New Jersey mark ... etplaces with the highest quality industrial and specialty gases, bulk propane, welding equipment and supplies, industrial supplies, filler metals, and safety equipment. Our state-of-the-art filling plant in Monticello, New York supplies our customers and our stores in Monticello, Goshen, Kerhonkson NY, Dingmans Ferry PA and Newton/Andover NJ with a wide variety of gaseous and liquid products to meet any gas requirements. read more