Abstract: A reusable shipping container, particularly adapted for the shipment of tubular product. The container has a generally rectangular base that is adapted to support the product during shipment. Generally rectangular side and end panel components are provided and have projecting members that mate with and extend into receptacles provided in the base and top panel components. Likewise, means are provided for connecting in sealing engagement panel components and the base at their adjacent edges. In this manner the container components are reusable and interchangeable.

Abstract: Apparatus for making butt-welded tube from a strip includes a pair of grooved weld rolls for aligning the longitudinal edges of the strip bent into a tubular shape. To insure that the inside seam of the tube is flush regardless of variations in thickness between strip edges, each roll is made in two sections. In a horizontal mill the seam is on top and each bottom roll section is fixed in horizontal position while the top roll section has limited axial movement. Resilient means bias the roll sections apart and against a top stop so that the top of one edge of the strip is higher than the other when the edges are of different thicknesses. If desired, the rolls may also be adjusted to insure that the outside seam of the tube is flush.