2. What Technical Reform Means on a Tannery Floor

Technical reform is not a synonym for buying new machines. On a working tannery it usually combines five kinds of work, in proportions that differ from plant to plant.

Baseline audit. Before any hardware is specified, the existing line is measured: batch sizes, float ratios, drum fill, rotation speed, temperature tracking through the day, dwell times and where batches actually queue. Soaking and liming frequently limit throughput more than tanning does, and a reform that ignores the beam house will simply move the bottleneck.

Drum retrofit or replacement. Existing drums can often be brought back into specification through door and gudgeon work, drive replacement, insulation and control upgrades. Where the shell, the foundation or the batch size no longer fits the product mix, an overloading wooden drum or a stainless steel drum replaces it.

Control and automation. Automatic temperature control, recipe storage and repeatable speed profiles convert an operator-dependent process into a documented one. This is the part of a tannery equipment upgrade that shows up first in rework rates and chemical consumption.

Beam house logistics. A tannery beam house automatic conveyor system removes manual transport between soaking, liming, fleshing and splitting, shortens the time leather spends waiting in the open, and reduces the labour content per dozen hides.

Milling, softening and laboratory support. Stainless steel octagonal or round milling drums, wooden milling drums and paddles set the final softness and surface, while stainless steel test drums let a reform be trialled on kilos before it is committed to tonnes.

These five strands are the reason technical reform is a project rather than a purchase order. A larger batch needs a different drum speed; automated temperature control needs a stable heat supply; a conveyor changes where people stand. Sequencing them badly is how retrofits acquire a reputation for not paying back.

3. Which Equipment a Reform Partner Has to Cover

A partner who only builds drums can only reform the drums. Shibiao organises its range around the drum room and the beam house, which is where most of the water, chemistry and labour in a tannery sit. Table 1 summarises the current range by process stage.

Table 1  Shibiao leather machinery range by process stage

Wooden drums remain the reference for soaking through dyeing because the timber wall buffers mechanical action on the grain and gives a gentler lift than a fully metal shell. Stainless steel and PPH drums come into their own where acid resistance, hygiene, colour work or cleaning between recipes dominates. A real reform project usually mixes the two rather than replacing one type with the other, and the overloading wooden drum is normally the unit that carries the largest share of the tonnage.

4. Why Shibiao Machinery Is Positioned for This Work

Three capabilities separate a machinery supplier from a reform partner, and Shibiao carries all three.

Custom design for non-standard specifications. Drum diameter and length, door arrangement, drive configuration and control package can be designed around an existing foundation, crane height and building rather than forcing the building to fit a catalogue model. On brownfield sites this is often the difference between a reform that happens and one that stays on paper.

Repair and adjustment of equipment already on the line. Alignment, door sealing, transmission and control work can restore a drum that is mechanically sound but no longer holds a recipe. This is the cheapest route to consistency for a tannery that is not yet ready to replace the machine.

Technical reform delivered as a service. Process targets are agreed before hardware is specified, and the reform is judged on measured output rather than on delivery dates alone.

Supporting this, the company runs a complete testing system, holds ISO9000, CE and SGS certification and more than 20 national patents, and provides after-sales service for the equipment it sells. Those are the parts of a reform that decide whether a line is still holding its recipe two seasons later.

The overloading wooden drum is the clearest example of the approach: built to the same design concept as the newest overloading drums used in Italy and Spain, it gives tanneries comparable mechanical action with domestic lead times, spare parts and service response, instead of an imported drum waiting on a shipping schedule.

5. How an Upgrade Project Is Delivered

Audit and target setting. The line is walked and measured, the product mix is reviewed, and the reform is expressed as targets: kilos per batch, cycles per day, temperature tolerance, chemical consumption per hide.

Specification and layout. Drum size, wall material, drive, control package and conveyor layout are drawn to fit the site, with the interface to existing equipment defined before manufacture starts.

Manufacture, installation and commissioning. Equipment is tested in the factory before shipment, installed to the agreed layout, and commissioned against the targets from step one rather than against a checklist of parts.

Handover and after-sales. Operators are trained on recipe entry, alarm handling and routine maintenance; documentation and spare parts are handed over; service support continues after the project closes.

The schedule is fixed after the audit, not before it. Replacing one drum and retrofitting a beam house with a new conveyor line are different projects, and quoting them on the same calendar is one of the usual reasons retrofit plans slip.

6. Where the Equipment Is Already Running

Shibiao machines are in service across China's main leather-producing provinces, including Zhejiang, Shandong, Guangdong, Fujian, Henan, Hebei, Sichuan, Xinjiang and Liaoning, and with leather factories in a number of overseas markets. That installed base is useful to a tannery planning a reform: the same drum family, conveyor layout and control package can be seen working on comparable product mixes before a specification is signed, and service experience already exists in the regions where the equipment is concentrated.

7. Frequently Asked Questions

Can an existing tanning drum be upgraded instead of replaced? Often yes. Doors, gudgeons, drives, insulation and controls can be reworked to bring a sound drum back to a repeatable recipe. The audit decides whether the shell and foundation can carry the batch size the product mix needs.

Can Shibiao build non-standard drum sizes? Yes. Designing leather machinery to special specifications is part of the company's service range, which is what makes brownfield reform practical.

Does the company supply only drums? No. The range covers paddles, iron drums, milling drums, laboratory and test drums, and tannery beam house automatic conveyor systems, alongside the wooden, PPH and stainless steel drum families.

How is a technical reform project scoped and priced? From the audit. Batch targets, site constraints and the condition of existing equipment determine whether the answer is adjustment, retrofit or replacement, and the quotation follows that finding.