Gantry Type ASRS for Automatic Pipe Storage & Retrieval

Pipe warehouses face a storage problem that ordinary pallet racks cannot solve. Steel tubes of six, eight, or twelve meters are too long for standard bays, too heavy for comfortable manual handling, and easy to damage when dragged across a concrete floor. A gantry type ASRS for automatic pipe storage & retrieval attacks all three problems at once: it stores long material vertically, retrieves it by machine, and keeps every item tracked in a digital inventory. This article walks through how the system operates, the numbers that matter, and what to check before you commit to a supplier such as Herochu.

Why long pipes need a gantry, not a pallet rack

Standard selective racks are built around pallets, not profiles. Six-meter tubes overhang the rack face, block aisles, and get bent when forklifts crowd around them. Cantilever racks solve the length problem but leave the operator as the bottleneck: someone still has to climb, reach, and drag each bundle out by hand. That is where the gantry type ASRS changes the picture. The machine does the reaching. The operator, or the production line, simply calls for material and the gantry delivers it to a fixed pickup point. For factories that move several tons of pipe per day, the difference is visible within the first shift.

How the gantry stores and retrieves pipes automatically

The core of the system is a gantry picker that travels along floor-mounted rails in front of a row of storage towers. Each tower is divided into bins sized for the material in stock, with a standard grid of 600 x 500 mm per cell. The working cycle is straightforward:

1. Pipe arrives at the inlet station, either from a cutting line or from a delivery crane.
2. The gantry picker positions itself in front of the target bin using fixed positioning, with a repeatability of ±2 mm.
3. A chain-driven carriage lifts the load at speeds up to 15 m/min and places it into the bin.
4. The PLC updates the stock record in real time, so the digital inventory always matches the physical floor.

Retrieval runs in reverse. The operator enters a part number on the touchscreen, the gantry travels to the bin at up to 30 m/min, collects the bundle, and delivers it to the outlet at 12 m/min. Nothing moves by hand between the inlet and the outlet. With vertical lifting speeds around 9 m/min and exchange speeds of 12 m/min on the standard configuration, a full storage or retrieval cycle is measured in seconds, not in worker hours.

Built for 24/7 unmanned operation

Because the storage and retrieval sequence is fully automatic, the system does not need an operator standing by. It runs during breaks, after shifts, and overnight. Factories that already operate laser cutting lines at night can feed them from the gantry warehouse without adding a single night-shift worker. The repeatable ±2 mm positioning also eliminates the two classic causes of handling damage: dropped bundles and misaligned forks. What a manual warehouse loses to scrap and rework, the gantry warehouse simply does not spend.

Specification overview

Herochu offers three standard configurations, all customizable at order time:

Herochu specifies linear guide rails with chain drive transmission, a combination chosen for long-stroke reliability and low maintenance. The bins accept loose and bundled material up to 12 meters, so seamless pipes, alloy tubes, and structural profiles share the same warehouse without special fixtures.

Design details worth checking before you buy

Three details separate a dependable gantry ASRS from a prototype. First, the guide rail system: linear rails keep the gantry square to the rack face over long travel distances, which is what makes ±2 mm repeatability physically possible. Second, safety electronics: laser sensors and real-time load monitoring detect obstructions and overloads before they become collisions, protecting both equipment and personnel. Third, the control architecture: a PLC with a touchscreen panel should be standard, with ERP/MES data exchange available so the warehouse reports to the same system your production line uses.

What a gantry ASRS replaces in practice

Factories typically move to this equipment from one of two setups. The first is manual racking with forklift access, where every retrieval means driving, lifting, and maneuvering in narrow aisles; replacing it with a zero-aisle gantry layout routinely reclaims 50 to 80 percent of the floor space previously tied up in access paths. The second is a cantilever rack served by an overhead crane, which still depends on a crane operator and a signaler; the gantry removes the human dependency entirely. In both cases, the measurable result is the same: more material stored per square meter, faster retrieval, and fewer damaged tubes.

FAQ

Can the system handle 12-meter pipes? Yes. The standard models are configured for 6,000 mm and 8,000 mm pipes, and the bins accept loose or bundled material up to 12 meters when the layout is customized.

How accurate is the positioning? Repeatability is ±2 mm. That precision keeps the carriage aligned with the bin during every transfer and is sufficient to feed laser cutting lines directly.

Does it integrate with existing production systems? Yes. The PLC supports real-time stock display and can exchange data with ERP/MES platforms, so inventory levels and production demand stay synchronized.

Is the number of layers and racks fixed? No. Layers, rack count, and bin grid are customized per project. Herochu’s three standard models are starting points, not limits.

Getting started with a gantry ASRS

The fastest way to evaluate a gantry type ASRS for automatic pipe storage & retrieval is to send your material list — pipe diameters, lengths, weights, and daily throughput — to Herochu for a layout proposal. You will receive a tower configuration, a floor plan, and a cycle-time estimate based on your actual stock, not on a generic brochure. That proposal is also the moment to confirm the customization options that matter for your site: bin sizes, inlet and outlet positions, and the interface to your production line. With the layout defined, the payback calculation is usually straightforward: labor saved, floor space reclaimed, and damage reduced are all measurable from the first month of operation.