Quick answer: U-Head Jacks (Adjustable U-heads) — Scaffolding manufactured by Sino East Steel and shipped directly from the mill. Standards: EN 12811, EN 39, BS 1139. Certification: EN 10204 3.1 (MTC) on every delivery. MOQ 10-20 tons, delivery to Poland and the EU in 15-25 days. Request your quotation by form, WhatsApp or e-mail — reply within 24 hours.
U-Head Jacks (Adjustable U-heads)
U-Head Jacks — factory-direct products from Sino East Steel, one of China’s certified steel manufacturers serving Polish importers, distributors and contractors since 2005. A U-head jack is an adjustable threaded spindle topped with a U-shaped steel plate, used to support formwork beams, timber walers and scaffold transoms at the top of a standard. U-heads are essential components of shoring systems and slab-support configurations. We supply U-head jacks for ringlock, cuplock, kwikstage, frame systems and heavy-duty shoring, hot-dip galvanized, 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 our U-head jack range — sizes, load data, manufacturing background, 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 sizes 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 |
|---|---|
| Product | U-head jack (adjustable U-head) |
| Spindle Diameter | 38 / 45 / 50 mm threaded |
| U-Plate Size | 100 / 120 / 150 mm wide |
| Adjustment Range | 300 / 500 / 600 / 800 mm |
| Surface | Hot-dip galvanized (HDG) |
| 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 Types & Capacity
| Type | Specification | Notes |
|---|---|---|
| Standard U-head | spindle 38 mm, U-plate 100-120 mm | for transoms and beams |
| Heavy-duty U-head | spindle 45 / 50 mm, U-plate 150 mm | for shoring frames |
| Ringlock U-head | with rosette collar | system-matched |
| Cuplock U-head | with cup receiver | system-matched |
| Kwikstage U-head | with V-press plate | system-matched |
Standards & Compliance
U-head jacks are manufactured to EN 12811-1 and EN 1065 (adjustable telescopic steel props — for shoring versions), with spindle load capacity verified by testing. Hot-dip galvanizing is performed to EN ISO 1461 and threads are rolled for higher fatigue strength. The U-plate provides a stable seat for timber or steel beams during slab casting and formwork works.
Typical Applications
- Supporting formwork beams and timber walers during slab casting
- Top adjustment of shoring towers and heavy-duty props
- Supporting scaffold transoms and loading platforms
- Bridge soffit and slab support configurations
- Rental fleets — complementing base jack stock for complete systems
Quality Assurance & Testing
Manufacturing runs under an ISO 9001:2015 certified quality system. Spindle threads are gauge-checked and load-tested; U-plate 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
U-heads are bundled or boxed on pallets. 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: system type, spindle size, U-plate size, 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
What is the difference between a base jack and a U-head jack? A base jack has a flat base plate for the ground; a U-head jack has a U-shaped plate that holds beams, walers or transoms at the top of a standard. Both share the same threaded spindle technology.
What spindle sizes are available? Standard 38 mm; heavy-duty 45 and 50 mm with adjustment ranges up to 800 mm.
Can U-heads be matched to our scaffold system? Yes — ringlock, cuplock, kwikstage and frame system versions are available with the correct collar or receiver geometry.
U-Head Jacks — Specifications
| Parameter | Standard Range |
|---|---|
| Spindle | M30 x 500 / 600 mm (M36 for heavy duty) |
| Head plate | U-channel 100 x 100 mm welded, height 90–120 mm |
| Tube collar | 48.3 x 3.2 / 4.0 mm |
| Working load | 30–60 kN |
| Finish | Hot-dip galvanized to EN ISO 1461 |
U-head jacks sit on top of standards in shoring towers and formwork supports. The U-channel receives timber beams or steel soldiers, and the threaded spindle adjusts the head height precisely to the slab formwork line. Combined with base jacks, they turn standard scaffolding components into a complete heavy-duty propping system.
Technical Features
- Welded U-channel head — full-length weld on both sides for beam-load transfer without deformation.
- Precise height control — fine thread adjustment levels formwork beams to millimetres.
- Heavy-duty option — M36 spindle and reinforced head for loads above 50 kN.
- Interchangeable — fits any 48.3 mm standard from Ringlock, Cuplock, Kwikstage or frame systems.
Applications
U-head jacks are used in slab formwork (stropowe) support towers, beam propping, bridge falsework and any temporary structure where a timber or steel beam must be supported and adjusted precisely. Polish construction sites use them extensively during reinforced-concrete works on residential and commercial buildings.
Quality Assurance and Delivery
Heads are weld-inspected, spindles hardness-tested, and assemblies batch load-tested. EN 10204 3.1 certificates included; packed palletized, delivered to Baltic ports in 15–25 days, MOQ from 200 pieces.
Frequently Asked Questions
Can U-head jacks be used with any modular system?
Yes — the 48.3 mm collar fits standards of Ringlock, Cuplock, Kwikstage and frame systems.
What beam sizes fit the U-head?
The standard U-channel accepts timber beams and steel soldiers up to about 90 mm wide; wider heads can be produced for special projects.
Do you supply complete shoring sets with U-heads?
Yes — we calculate shoring towers with base jacks, standards, ledgers and U-heads from your slab thickness and bay layout.
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.
