Gases are often more efficiently stored and shipped as liquids at cryogenic temperatures, and storage tanks are generally shop fabricated in sizes that can be shipped by conventional carriers. This paper focuses on welding practices for shop-fabricated vessels and equipment. While the fabrication and welding of shop-constructed cryogenic vessel and equipment involve some special attention, any fabricator accustomed to quality stainless steel and nickel alloy work has the capability to produce acceptable stainless steel and 9% nickel-steel products.