A method for joining shipping containers together to create a modular structure includes providing a first shipping container and a second shipping container; removing a wall of the side of the first shipper container to create a first opening; removing a wall of the side of the second shipping container to create a second opening; positioning the first opening adjacent and opposite to the second opening; aligning the first opening with the second opening; after the aligning, securing the first shipping container to the second shipping container to create the modular structure; and securing an inner flashing around an inner periphery of the first opening.

A welded structure including a base material made of duplex stainless steel and a welded portion formed by welding the base materials to each other, wherein the base material has a predetermined chemical composition, a volume fraction of a ferrite phase in a metallographic structure of a weld metal of the welded portion is 45 to 75%, a ratio of a hardness of the weld metal to a hardness of the base material is 0.80 to 1.20, and an amount of precipitates formed in the ferrite phase of the weld metal is less than 10% in area fraction.

A modular structure system includes a plurality of shipping containers arranged to form a contiguous enclosure comprising an interior volume of the plurality of shipping containers, wherein each of the plurality of shipping containers comprises a first side defining an opening configured to be arranged opposite and adjacent to a corresponding opening in a first side of a different shipping container of the plurality to form the contiguous enclosure; a bottom group of the plurality of shipping containers including bottom sides having floor sections arranged to form a bottom floor of the modular structure; a top group of the plurality of shipping containers including top sides having ceiling sections arranged to form a top ceiling of the modular structure; and a side group of the plurality of shipping containers comprising a second side having a side wall arranged to form exterior right and left side walls of the modular structure.

Secure storage carts are disclosed herein and capable of being assembled and disassembled on-site without common disadvantages that affect storage carts designed for on-site assembly. Secure storage carts disclosed herein may be assembled to a reduced tolerance, eliminating potential points of failure in the assembled cart, and giving the user a more solid feel to the operation. Methods for assembling storage carts are also disclosed herein and can include adjusting the extension depth of a door panel hinge. Methods disclosed herein also may include applying a preloading force to the cart frame, to reduce tolerances between components of the storage cart once assembled. Kits are also provided herein containing the components required to assemble the cart on-site, in configurations that may be easily transported to and from the job site when disassembled. Kits also may provide for straightforward and secure assembly of the carts.

A modular structure system includes a plurality of shipping containers arranged to form a contiguous enclosure comprising an interior volume of the plurality of shipping containers, wherein each of the plurality of shipping containers comprises a first side defining an opening configured to be arranged opposite and adjacent to a corresponding opening in a first side of a different shipping container of the plurality to form the contiguous enclosure; a bottom group of the plurality of shipping containers including bottom sides having floor sections arranged to form a bottom floor of the modular structure; a top group of the plurality of shipping containers including top sides having ceiling sections arranged to form a top ceiling of the modular structure; and a side group of the plurality of shipping containers comprising a second side having a side wall arranged to form exterior right and left side walls of the modular structure.

A proppant delivery system for use at a hydraulic fracturing site to prepare a proppant mixture for subsequent delivery to a wellbore at the hydraulic fracturing site comprises two types of proppant storage containers, including silo type and box-like container type each of which normally has a dedicated system to dispense proppant, arranged in an array usually employed in a silo-only delivery system where parallel rows are formed and interrupted by a feed conveyor extending parallel to and disposed between the rows. A support stand carries the box-like container to one side of the feed conveyor with a bottom discharge of this container held at a spaced height above a ground surface.

A welded structure including a base material made of duplex stainless steel and a welded portion formed by welding the base materials to each other, wherein the base material has a predetermined chemical composition, a volume fraction of a ferrite phase in a metallographic structure of a weld metal of the welded portion is 45 to 75%, a ratio of a hardness of the weld metal to a hardness of the base material is 0.80 to 1.20, and an amount of precipitates formed in the ferrite phase of the weld metal is less than 10% in area fraction.

A method for joining shipping containers together to create a modular structure includes providing a first shipping container and a second shipping container; removing a wall of the side of the first shipper container to create a first opening; removing a wall of the side of the second shipping container to create a second opening; positioning the first opening adjacent and opposite to the second opening; aligning the first opening with the second opening; after the aligning, securing the first shipping container to the second shipping container to create the modular structure; and securing an inner flashing around an inner periphery of the first opening.

This disclosure provides a container wallboard module and a container. The container wallboard module includes a wallboard body and two side columns. The side columns deviate from two ends of the wallboard body in a length direction. The wallboard body is provided with assembly holes for detachable connection with other wallboard modules. The side column includes a column riser body and two connecting ends respectively formed at upper and lower ends of the column riser body. The connecting ends protrude from the column riser body in a front-back direction, and the connecting end is provided with a connecting hole for detachable connection with other wallboard modules. The container includes two side wall modules, a roof panel module, a bottom plate module, a front wall module and a rear wall module, all of which are detachably connected. The side columns, a top gusset and a bottom gusset form a column frame.

An offset laminate seam system for storage bins for increasing the capacity of bolts in a seam of a storage bin. The offset laminate seam system for storage bins generally includes three or more panels connected together with two or more vertical rows of end fasteners to form a vertical seam. The interconnection of three or more panels continues to form a ring structure. A plurality of the ring structures are stacked upon one another and attached together with fasteners to form the wall of the storage bin and a roof is attached to the uppermost ring structure.