Quick answer: Cuplock is a cup-and-bowl modular system used for both access scaffolds and shoring, with four basic components and load classes typically EN 12811-1 class 3-5 depending on configuration. Sino East Steel produces galvanized cuplock standards, ledgers, transoms, braces, base jacks and accessories with EN 12811-1 documentation and EN 10204 3.1 certificates, delivered across the EU. Send your BOQ or drawing for a full-container quotation.
Cuplock Scaffolding System
Cuplock Scaffolding System — a factory-direct product from Sino East Steel, one of China’s certified steel manufacturers serving Polish importers, distributors and contractors since 2005. The cuplock system uses a forged cup-and-blade connection that locks ledgers and transoms onto the vertical standard without loose fittings, making it one of the fastest and most economical systems for standard façade and access work. Products are manufactured to EN 12810 / EN 12811, hot-dip galvanized, supplied with EN 10204 3.1 mill test certificates, and packed for sea freight to Gdansk, Gdynia, Szczecin and other Baltic and Northern European ports.
This page provides the full technical picture of the Cuplock system — component range, connection data, manufacturing background, typical applications, quality assurance, packaging and ordering process — so your procurement team can evaluate the product without chasing data across multiple suppliers. For an exact quotation matching your required component mix and quantities, contact our export office; a confirmed price and delivery schedule are normally provided within 24 hours.
Key Specifications at a Glance
| Parameter | Value |
|---|---|
| System Type | Cuplock (cup and blade) |
| Tube Diameter | 48.3 x 3.2 mm |
| Surface | Hot-dip galvanized (HDG) |
| Standards | EN 12810 / EN 12811 |
| Certification | EN 10204 3.1 MTC |
| Minimum Order Quantity (MOQ) | 10-20 tons |
| Lead Time | 15-25 days |
| Payment Terms | T/T, L/C |
Available Component Range
| Component | Available Sizes | Notes |
|---|---|---|
| Verticals (standards with cups) | 1.0 / 1.5 / 2.0 / 3.0 m | upper and lower cup per node |
| Ledgers | 0.6 / 0.9 / 1.2 / 1.5 / 1.8 / 2.4 m | blade ends, no loose parts |
| Transoms | 0.9 / 1.2 / 1.5 / 1.8 m | with or without head plate |
| Diagonal braces | 1.8 – 3.0 m | swivel ends |
| Base jacks / U-head jacks | 0.5 / 0.6 m screw | adjustable |
| Steel planks | 1.5 / 2.0 / 2.5 / 3.0 m | anti-slip perforated |
Standards & Compliance
Cuplock systems are supplied to EN 12810 (facade scaffolds made of prefabricated components) and EN 12811 (working scaffolds and performance requirements), with tubes to EN 39. The forged cup locks two horizontals and up to four diagonals in a single action — no loose couplers, no tools beyond a hammer — which significantly reduces erection time and labour cost on site. Galvanizing is performed to EN ISO 1461 for a service life of 15+ years in outdoor conditions.
Typical Applications
- Façade and renovation scaffolding for residential and commercial buildings
- Standard access scaffolding for bricklaying, rendering and cladding works
- Loading bays, stair towers and material hoist towers
- Shoring and propping configurations for slabs and beams
- Rental fleets — fast assembly and high component interchangeability
Quality Assurance & Testing
Manufacturing runs under an ISO 9001:2015 certified quality system. Each batch is subject to chemical analysis, tensile testing and dimensional inspection; cup forgings and welds are verified before galvanizing. Every shipment includes an EN 10204 3.1 Mill Test Certificate, and third-party inspection by SGS, TUV, BV or Intertek can be arranged at the buyer’s request.
Packing & Delivery
Verticals and ledgers are bundled and strapped; smaller components are packed in pallets or wooden crates. Production takes 15-25 days, followed by sea freight to Gdańsk, Gdynia or Szczecin, with door-to-door (DDP) options available for container shipments.
How to Order
- Send your inquiry: component mix, sizes, quantities and destination port.
- Receive a quotation within 24 hours with current factory pricing and delivery schedule.
- Confirm the order: 30% T/T deposit, 70% before shipment, or L/C at sight.
- Production and optional third-party inspection (15-25 days).
- Shipment with full documentation: invoice, packing list, B/L, MTC, certificate of origin.
Frequently Asked Questions
Cuplock vs ringlock — which is more economical? For standard façade work cuplock is typically faster to erect and more economical; ringlock offers more connection flexibility for complex geometry. We supply both and will recommend the right system for your projects.
Do the cup connections need loose couplers? No. The cup-and-blade design locks horizontals onto the standard without any loose fittings, which reduces parts loss on site and speeds up dismantling.
Can cuplock components be used with our existing fleet? Yes. Standard cuplock geometry is widely interchangeable across manufacturers, and we can supply components to match your current fleet specification.
Cuplock Component Range and Dimensions
| Component | Available Sizes | Typical Weight |
|---|---|---|
| Standards (uprights) | 48.3 x 3.2 mm, lengths 1.0 / 1.5 / 2.0 / 3.0 m | 4.4–9.5 kg |
| Ledgers | 48.3 x 3.2 mm, lengths 0.6 / 0.9 / 1.2 / 1.5 / 1.8 / 2.0 / 2.5 m | 1.8–5.5 kg |
| Transoms | 48.3 x 3.2 mm, lengths 0.6–2.5 m | 1.8–5.5 kg |
| Diagonal braces | 48.3 x 3.2 mm, bay sizes 1.5–3.0 m | 4.0–8.0 kg |
| Cup node | top and bottom cup welded at 1.0 m intervals (0.5 m at start) | — |
| Scaffold boards / platforms | Steel or aluminium, 0.6–2.5 m | 10–24 kg |
The cuplock node uses a fixed bottom cup and a sliding top cup. Ledgers end in forged blades that drop into the bottom cup, and the top cup is then hammered down over them, locking up to four horizontal members at once. No loose fittings, no bolts — just the cup action and a hammer. This simplicity is why Cuplock remains the world’s most widely used modular system for general construction.
Technical Features of the Cuplock System
- Fast node connection — four ledgers are locked simultaneously in a few seconds; a skilled crew erects 150–250 m² per day with Cuplock.
- No loose parts — the wedge action is part of the node, which eliminates lost fittings and speeds up dismantling and transport.
- Proven load performance — vertical load is carried through the standard; typical working load of 48.3 x 3.2 mm standards is 40–50 kN, with full load tables provided per configuration.
- Hot-dip galvanized — EN ISO 1461 HDG finish (450–550 g/m²) for long service life in outdoor and coastal conditions.
Applications on Polish and EU Projects
Cuplock is the workhorse of Polish construction: facade renovation, residential and commercial new builds, roof works, chimney and silo access, and temporary shoring all run on Cuplock because crews already know the system and the component pool is deep. In practice we see it most on multi-storey housing projects across Šląskie and Małopolskie, on hall construction, and on refurbishment contracts in city centres where the scaffold must go up fast and come down without damage to the building.
Because the same cup node accepts ledgers in four directions, Cuplock also handles heavy loading bays, material platforms and access around plant rooms. For rental companies, the system’s robustness and the low rate of component loss make it the most profitable standard inventory to hold.
Quality Assurance and Certification
Cuplock components are manufactured from certified EN 39 / BS 1139 tube, with cups and blades forged and welded under controlled procedures and 100% gauge-checked after galvanizing. Shipments include EN 10204 3.1 mill certificates, load tables and erection instructions, plus documentation for CE marking and EN 12811-1 compliance.
Packing, Delivery and Ordering
Components are bundled and container-packed for sea freight to Gdańsk, Gdynia, Szczecin and other Baltic ports in 15–25 days. MOQ from one mixed pallet; payment T/T or L/C. Send your facade area and working height and we will deliver a complete, quantity-checked component list — including boards, base jacks and safety accessories.
Ringlock vs Cuplock vs Kwikstage — How They Compare
Read our full comparison, Ringlock vs Cuplock vs Kwikstage, for node design, speed, capacity and cost differences. Cuplock is the fastest all-purpose system and the easiest for crews to learn; choose it for general construction and facade work where speed per square metre matters most.
Frequently Asked Questions
How many ledgers can be connected at one cuplock node?
Up to four horizontal members (ledgers or transoms) fit into one cup, plus a diagonal can be connected with an additional blade.
Is Cuplock suitable for heavy shoring?
Yes, with base jacks and U-head jacks the same components form shoring towers; load tables for shoring configurations are provided with the system documentation.
Do you supply complete Cuplock sets for a project?
Yes — we calculate component quantities from your drawings or facade area and supply complete sets including boards, jacks and safety items.
What standards do your Cuplock components meet?
EN 39 tube, EN 12811-1 system design, EN ISO 1461 galvanizing, with EN 10204 3.1 certificates included per shipment.
Component Maintenance and Service Life
Hot-dip galvanized scaffolding components are designed for decades of service with minimal upkeep. After each project, clean components of mortar and concrete residue, stack them by type on timber battens, and store them off bare ground so the zinc layer is not damaged. Where the coating is scratched through to the steel, touch up with zinc-rich paint before the next erection cycle. Rotating stock evenly and keeping one spare set of wedges or blades per 1,000 components keeps a rental fleet productive for 15–20 years — the same discipline that Polish rental companies apply to their own fleets.
Load Classes and Configuration Notes
Scaffolding configurations are classified by load class according to EN 12811-1. Load class 3 (2.0 kN/m² distributed load) covers most facade renovation and finishing work; load class 4 (3.0 kN/m²) is used where materials are stacked on platforms; load classes 5–6 apply to heavy industrial and shoring duty. When you order a system, we confirm the load class with the bay layout, lift height and tie-in pattern, and provide the corresponding load tables. All systems can be configured as independent towers, facade scaffolds, birdcage supports or shoring structures simply by changing ledgers, transoms and ties — the same component pool covers all of them.
Why Buy Direct from Sino East Steel
Sino East Steel is a steel producer, not a trader: tubes for scaffolding components are rolled in our own mills, which gives us direct control over chemistry, wall thickness and surface quality, and keeps pricing at mill level. Since 2005 we have supplied Polish importers, distributors and contractors, and we maintain a bilingual (English / Polish) export team that prepares customs, certificates and shipping documentation from one source. Every order includes EN 10204 3.1 mill certificates, and for EU buyers we provide the technical file support needed for CE marking and EN 12811 compliance reviews.
Request a Quotation
To receive a factory-direct quotation, send your required component list (or facade area and working height), target port and quantity via the contact form, WhatsApp +86-186-2208-8833 or email [email protected]. Our export office responds within 24 hours with prices, load tables and a delivery schedule.
Component Lists for Complete Sets
When you order a complete system set, the quantity list is calculated from three inputs: the facade area to be covered, the working height, and the load class. For a typical 1.2 x 2.0 m bay at 2.0 m lift height, a rough rule of thumb is 2.0–2.5 m of standard per square metre of facade, 0.5 ledgers per square metre per lift, plus transoms, boards, base jacks and ties proportionally. We prepare the exact list from your drawings or measurements, so the set arrives balanced — enough standards to reach the top, enough ledgers for every lift, and the right number of boards, guard rails and toe boards for every platform level. Spare wedges, blades and pins are added at 1–2% of the component count, which is the practical allowance rental fleets use to cover loss and damage.
Erection and Dismantling Practices
Whichever system you choose, safe erection follows the same sequence: level the base with jacks, erect the first bay and fit ledgers and diagonals immediately, check plumb and level, then build lift by lift with guard rails and toe boards fitted before anyone works at the new level. Ties are installed at the spacing given in the load tables — typically every 4–6 m of horizontal length and every 2–3 lifts vertically, or closer where wind exposure is high. During dismantling, components should be lowered rather than thrown, and the scaffold should be inspected after any storm, impact or load change. Our documentation package includes an erection checklist that site teams can use directly.
Transport and Storage
Galvanized scaffolding components transport and store efficiently because they are stackable and do not require weather protection beyond basic precautions. For container loading, standards and ledgers are bundled by length with steel strapping and timber dunnage; boards and frames are palletized; small items (couplers, wedges, bolts) travel in bulk bags or cartons. On site, keep components on timber battens off the ground, sorted by type, and cover bundles if they will sit through winter weather. With this routine, a set retains full load capacity and appearance for 15–20 years of rental service — which is why galvanized systems remain the standard for professional fleets in Poland and across the EU.
Compliance and Documentation for EU Buyers
For buyers in Poland and the EU, we provide the technical documentation needed to satisfy CE marking requirements and EN 12811-1 conformity reviews: design basis and load tables for each system, material certificates (EN 10204 3.1) covering tube chemistry and mechanical properties, galvanizing certificates to EN ISO 1461, and weld inspection documentation. Where the scaffold is supplied as a complete system for sale to end users, the declaration of performance and technical file can be prepared from the same documentation set. Our export team is familiar with Polish customs procedures for steel products, including the documentation required for EU safeguard measures and import controls, and will prepare the shipping documents accordingly.
Working with Sino East Steel on Your First Order
Starting a relationship with a new supplier should be low-risk. On your first order we can agree a pre-production sample batch (for couplers, jacks or small components), arrange third-party inspection (SGS or similar) before shipment at your cost, and split a container shipment if you want to test the market with a smaller volume first. Payment by T/T with deposit and balance against shipping documents, or by irrevocable L/C, both work. After the first order, repeat orders benefit from fixed price windows of 30–90 days and reserved production slots, so your rental or construction schedule is not exposed to price swings.
Selection Support and After-Sales
Choosing between systems and sizing the set is easier with an engineer on the other end of the line. Our export team includes engineers who work daily with Polish and EU contractors, so we can recommend the system, calculate quantities, confirm load classes and review your tie-in pattern before production. After delivery, we support the first erection with remote guidance, provide spare parts and additional components from the same production batch codes, and can adjust a repeat order to match what your site actually consumed. You are not buying components from a catalogue — you are getting a configured system with engineering backup behind it.
