H. Schwartz & Sons Inc is distributor of steel pipe for structural applications. Some uses for our pipe: bollards, awing frames, fence posts, casing, dredge lines, greenhouse high tunnel and cold frames. H. Schwartz & Sons Inc offers high tunnel cold frames / High Tunnels / Greenhouses made with the thickest gauge galvanized steel pipe on the market today. Order yours for your commercial farming or nursery operations.

H. Schwartz & Sons is a distributor of structural steel pipe. This pipe is not pressure tested but is suited and priced for non-critical applications, farming and nursery operations. By matching our customers needs with the type of pipe best suited for that need, we can offer the right pipe at the right price.

Cold frames from H. Schwartz & Sons Inc of Wilmington, Delaware, are ideal for nursery and farming operations. Count on us to help you select the perfect growing shelter for your unique needs.Our Cold FramesH. Schwartz & Sons manufactures a line of High Tunnel / Cold Frames for commercial farming and nursery operations. Cold frame / High Tunnels are unheated structures that can extend the growing season for plants, flowers, vegetables, and fruit. They can be used year round. Our "cold frame" model differs from our "greenhouse" model in that the hoops on our cold frame are made with a single piece of pipe (usually 21 or 24 foot long) while the greenhouse has a two piece hoops assemble. Our "cold frames" are available in standard widths of 14 & 16 foot with a center peak height of 6'6" to 8 foot. Our design is the "half moon" arch. Our houses are made from heavy Gauge galvanized steel pipe. If you require more height, don't worry. You can achieve this using our optional extra-long ground sleeves.