Disc padlocks
Hardened stainless disc, 70 mm, keyed or combination.
- Key options
- Keyed alike · keyed different · custom logo · serial numbers
- Door compatibility
- Standard self-storage unit doors — confirm with a sample
Self-storage hardware · China supply
Self Storage Locks & Door Hardware for Facilities
Disc padlocks, cylinder locks, roll-up door latches and overlock hardware for multi-site operators, distributors and door-system suppliers.
From a sample to a serial-numbered production run — verified against your doors, branded for your facility, delivered with customs support.
SGS-verified supplier
ISO 9001:2015
MOQ from 500 pcs
Typical reply within 4 business hours
Why operators work with us
Five things a self-storage buyer checks before placing a first order — and what we can show for each.
SGS
Verified supplier
Audited on site, most recently in October 2025.
ISO 9001:2015
Quality system
Documented incoming, in-process and final inspection.
300,000 / mo
Lock capacity
Capacity for bulk and phased deliveries.
99.3%
On-time delivery
Recorded across our lock and key-box lines.
≤4 hrs
Typical reply
Most enquiries answered the same working day.
Start from your task, not from a product photo
Most buyers arrive with a job to finish, not a part number. Choose the job and we will take you to the hardware and the questions that matter for it.
Unit locks for tenants
Disc and combination padlocks sized for standard self-storage unit doors.
View disc padlocks →
Replace and standardize cylinders
Cylinder locks matched to your existing doors, keyed alike or master-keyed.
View cylinder locks →
Roll-up door latches and hasps
Latches, hasps and mounting hardware for roll-up and swing doors.
View latches and hasps →
Overlock and lockout hardware
Plates and brackets for vacant units and delinquent accounts.
View overlock hardware →
Keyed-alike and master-key systems
One key plan across every unit, every site — including manager overlocks.
Plan a key system →
Not sure where to start?
Send a door photo and your unit count. We will tell you what fits and what it costs.
Request a quote →
Product range
Five hardware families cover a self-storage facility from the tenant unit door to the manager's overlock routine. Specifications are confirmed against a physical sample before production.
Cylinder locks
Solid brass, 19 mm and 17 mm.
- Key options
- Keyed alike · keyed different · master key · manager key
- Suits
- Replacing mixed cylinders with one standard
Roll-up door latches and hasps
Slide bolt latches, hasps, latch guards and mounting hardware.
- Fitment
- Send your door type or a photo of the existing part
Overlock and lockout hardware
Overlock plates and brackets for vacant or delinquent units.
Combination padlocks
Resettable numeric combination, no keys to manage.
Spec sheets and samples
Spec sheet available on request. Fit confirmed by sample before production.
Solutions for your business
We supply three kinds of buyer, and each one needs a different answer. Pick the one that describes you.
Multi-site operators
You need every site, and every future replacement, on the same specification.
Choose us to protect your maintenance budget, not just to lower the unit price.
Distributors and wholesalers
Volume pricing, private label and a regular supply path for the models you resell.
We know the cost of a mixed container — consistent batches, consistent packaging.
Door and hardware suppliers
OEM components — latches, cylinders and hasps built to your drawing or your sample.
Strict tolerances on mounting holes reduce rejects on your door line.
Production capacity
A factory you can audit, not just a catalogue
Wenzhou Mingsheng Security Technology Co., Ltd. is a lock manufacturer in Wenzhou, Zhejiang. Our self-storage range is made on the same lines as our lock and key-box production.
- Facility
- 5,000 m² production and warehouse space
- Team
- 100+ staff, including a 5-person engineering team
- Machines
- 40+ units: die casting, punching, drilling, painting, ovens, automatic assembly, laser marking
- Capacity
- 300,000 lock units per month for locks and key boxes
- Development
- Around 20 new lock models a year · 8 patents · 3 registered trademarks
- Ports
- Ningbo and Shanghai
Factory floor, die-casting and assembly lines (16:9)
MOCK｜必须修改：替换真实图片
MOCK｜必须修改：替换真实图片
SGS
On-site audit
Most recent verification October 2025.
ISO 9001
Quality system
Certified management system.
Certification on file
- SGS verified
- ISO 9001:2015
- CE
- UKCA
- RoHS
- REACH
- CPR
- ISO 9227
Compliance documentation relevant to your project is available on request — tell us the standard your project requires.
Made to your specification
From a logo to a new mold, we build the order around your requirement — and we confirm the artwork before we cut metal.
Laser logo
On the lock body and on the keys.
Serial numbers
Unit-level, 4 / 6 / 8 digits, or your own format.
Keyed-alike sets
Units supplied as a matched group on one key, or individually keyed.
Custom colors
Powder-coated or plated to your reference.
Blister and cards
Custom paper cards, blister packs and printed boxes.
New mold development
Transparent tooling cost, CAD review, sample before production.
Artwork and data files are confirmed before production starts. If we find an error in your file — a code that is too short, or a duplicate — we tell you before we cut metal.
Delivery
Delivery, duties and the forwarder question
Most first orders stall on shipping, not on the product. We quote EXW, FOB, CIF or DDP.
Spec and sample
Send a door photo or cylinder size. We send a sample to confirm fit.
Production and QC
Batch production around 30 days after spec and artwork confirmation.
Delivery
DDP, or coordinate with your own forwarder.
What DDP covers
On DDP we handle freight, customs clearance and duties where available, so the price you see is the price you pay.
No forwarder? We can arrange shipping and send you the customs documents, including the HS code.
- MOQ
- From 500 pcs for the mechanical families · from 50 pcs for smart padlocks
- Samples
- From 5 days
- Batch production
- Around 30 days
- Terms
- EXW · FOB · CIF · CFR · DDP
- Payment
- T/T · L/C · Credit card
- Ports
- Ningbo · Shanghai
What we check, and what we keep on file
A defect found in the field costs more than the lock. Inspection is documented at every stage, and you approve the finished batch before it ships.
- Incoming material
- Documented inspection with batch records.
- In-process
- Checked at each production stage.
- Final inspection
- Full inspection, sampling, or your own inspection plan.
- Packing check
- Quantity, packaging and labelling verified before shipment.
- Traceability
- Batch records let us trace back to the source material.
- Complaints
- Documented process with corrective action.
Testing capability
- Lock durability and cycling
- Tensile and impact load on the shackle and locking mechanism
- Humidity and temperature ageing
- Salt spray corrosion resistance
- Surface and dimensional defects under optical inspection
Testing parameters and reports are specific to each product. Tell us which standard your project requires and we will confirm what applies — we do not apply one product's test data to another.
Pre-shipment photos and video are sent for your approval before the goods leave.
Who we work with — and where to start
Find the line that describes you. Each one goes straight to the page that answers it.
Multi-site operators
Standardise locks and key systems across every location, with a re-order path that keeps future replacements matching what is already installed.
For facility operators →
Single-facility owners
Small quantity orders and samples from 500 pcs. Tell us your unit count and we will size the first order with you.
Order terms →
Distributors and wholesalers
Volume pricing, private label and a regular supply rhythm for the models you resell.
Customization options →
Door and hardware manufacturers
OEM latches, cylinders and hasps built to your drawing, with tolerances that do not cost you rejects on the door line.
How custom orders are built →
OEM and private label brands
Your brand on the lock body, the keys and the packaging, with artwork confirmed before production.
Branding options →
Maintenance contractors
Replacement cylinders and latches matched to doors already installed. Send a photo of the existing part and we will match it.
Replacement supply →
Common questions
Six questions that decide most first orders. The full list covers MOQ, keys, lead time, shipping and quality.
What does Self Storage Lock supply for a self-storage facility?
Disc padlocks, cylinder locks, roll-up door latches and hasps, and overlock hardware for vacant units, together with a keying plan that ties them together. Most facilities take a mix rather than a single part number.
How do operators usually phase a first order?
Most start with a sample on one door and a first phase of units, then scale once the fit and the finish are confirmed. That keeps the first order low-risk while the price stays on the production schedule.
What proof can you show before a first order?
The SGS supplier verification report dated 30 October 2025, the ISO 9001:2015 certificate, CE and RoHS declarations, and the inspection record from a batch already shipped. Send the list you need and we will confirm what exists.
Can we start with one site and add others later?
Yes, and it is the usual pattern. The specification and the keying plan are recorded against an order reference, so a second site is added to the same structure rather than specified from scratch.
What happens when a site needs a replacement part two years later?
Every order is produced against a written specification held with its order reference. Quote that reference and the replacement is made to the same drawing and the same keying, which is what keeps a site from drifting onto mixed hardware.
Where do we send a door photo or a drawing?
By email or WhatsApp, whichever is easier. A photo with a ruler in frame and a drawing of the hasp or the cylinder cut-out usually settles the fit question before a quotation is issued.
Buying guides and technical notes
Practical notes for the people who specify, order and install self-storage hardware.
Guide
Disc lock or cylinder lock? Choosing by door type
How unit doors, corridor doors and roll-up doors each change the hardware decision.
Guide
Combination or keyed padlock for storage units?
How each option changes key management, onboarding and staff workload.
Guide
How many locks does a facility need?
Unit count, spare ratio, manager keys and replacement stock in one framework.
Technical note
SS201 or SS304 for outdoor units?
Corrosion behaviour in exposed and coastal sites, and how to specify it.
Guide
Overlock vs lockout for vacant units
Which hardware for vacant and delinquent units, and why fit is checked on a sample door.
Buying guide
9 questions to evaluate a lock supplier
How to tell a manufacturer from a trader before you place an order.
Before you ask
The awkward questions, answered in public
Price, MOQ and lead time are easy to publish. The questions that decide a first order are the uncomfortable ones — and we would rather answer them on a page than in a call after you have already formed a view.
Seven of them come up again and again. Each one has a full answer, including the parts that are not flattering.
- Your price is higher than another supplier
- Four differences explain most gaps; we will compare your other quotation line by line.
- Will it fit my doors?
- Fit is confirmed by a physical sample on your own door, not by a drawing.
- I am not sure your batches will match
- First Article Inspection before every run, with the specification stored against your account.
- I have not heard of you
- Check documents rather than recognition — audit dates, certificates and a batch record.
- Your lead time is too long
- Samples from 5 days, batches around 30 days, and 99.3% on-time delivery measured.
- 500 pcs is more than I need
- Sample first, phase by model, or combine families to clear the threshold together.
- Switching supplier is a hassle
- Trial one or two models alongside your current supplier; no site-wide changeover.
Send us your lock spec, quantity and door type
We will reply within 4 business hours with a fit confirmation, a configuration and a price. If anything is unclear, we ask before quoting — not after.
- mike@bbdhome.com
- WhatsApp / Phone
- +86 13968846265
- Address
- No.14-3 Yuehu Block, West Wangjiang Road, Lucheng District, Wenzhou 325005, Zhejiang, China
Request a quote
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