After 7–8 years of service, retired warehouse cages aren't just scrap steel: the steel is 100% recyclable, and refurbished old cages can stay in service — good for both the environment and cost. Treating old cages as trash and selling them is actually the least worthwhile option.
On the material side, a warehouse cage is mainly Q235 wire and section steel; steel has a high recycling rate, and re-melting energy is only about 30% of that used in iron-ore steelmaking. A standard folding cage weighs about 35 kg; recovering several thousand cages together means avoiding hundreds of tons of ore mining, with a noticeable carbon-reduction effect.
On the use side, as long as welds are intact and the mesh isn't rusted through, old cages can be derusted, re-welded and re-powder-coated, then downgraded to light-load turnover or warehouse buffering — 40%–60% cheaper than buying new. In trade-in programs, makers can even dismantle recovered cages and send off-cuts back to the furnace.
Enterprise-level benefit: handing retired cages back to the maker for recycling or refurbishment avoids the industrial-waste sorting and disposal costs of dismantling them yourself. Some regions also offer environmental subsidies for steel recycling projects, worth asking about when buying refurbished cage units.
Practical tip: don't break up retired cages and sell them as scrap; hand the whole batch back to the original maker for refurbishment or trade-in. Nanjing Tongnuo Warehouse Equipment Manufacturing Co., Ltd. handles old-cage refurbishment and trade-in, and recovered steel goes uniformly back to the furnace, cutting consumption of new material.