Description
Stocked configuration — machines held ready for dispatch with voltage and control parameters locked before crating, avoiding the on-site delays that stall project timelines.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QT4-16 |
| Product Type | Automatic Hydraulic Concrete Block Making Machine |
| Overall Dimensions | 7400 × 1950 × 2800 mm |
| Total Mass | 5 T |
| Rated Pressure | 21 MPa |
| Main Vibration Form | Platform Vibration |
| Vibration Frequency | 2800–4500 r/min |
| Vibration Force | 40 kN |
| Pallet Size | 900 × 550 mm |
| Molding Cycle | 15–20 s (basis not stated in source — confirm block format / material / thickness) |
| Demolding Method | Hydraulic |
| Factory Area Required | 600 m² |
| Control System | PLC intelligent control with man-machine interface, fault diagnosis, remote control function |
| Voltage & Frequency | Configurable to destination market (confirm before dispatch) |
| PLC Display Language | Configurable (confirm before dispatch) |
| Applied Products | Concrete blocks, hollow/solid blocks, pavers, interlocking blocks, curbstone, colored pavers |
| Raw Materials | Crushed stone, sand, cement, dust, fly ash, gravel, slag |
Application Suitability
| Application | Material or Output |
|---|---|
| Hollow block production for residential and commercial walls | Crushed stone, sand, cement, fly ash blends |
| Solid block manufacturing for load-bearing structures | Gravel, sand, cement mixes |
| Paving block and colored paver runs for walkways and yards | Fine aggregate with pigment additives |
| Interlocking block and kerbstone production for roadworks | Coarse aggregate and cement composites |
| On-site block production for housing development projects | Locally sourced sand, dust, and slag |
What "Ready to Ship" Actually Means for Your Project Timeline
A machine in stock still takes weeks to commission if the voltage, PLC language, and mould inventory are not confirmed before it leaves the factory floor.
The QT4-16 block machine in stock listings often skip over the details that determine whether you can run production the week it arrives. I have watched containers land at port with motors wound for 380V when the site runs 415V three-phase — the machine sits idle while replacement motors are air-freighted at the buyer’s expense. Moulds quoted as "included" sometimes turn out to be one standard hollow block format, with the paver and interlocking moulds the buyer actually needs stuck on a six-week production queue [NEED_CITE: common commissioning delays in exported block machinery]. Confirming which standard moulds ship with the unit, what voltage the motors are wound for, and what language the PLC displays in turns a fast delivery promise into a usable timeline.
Dispatch Readiness Beyond the Crate
When buyers search for a QT4-16 block machine in stock, the assumption is that the machine is crated, tested, and waiting for a container. In practice, "in stock" can mean the frame and hydraulic press are assembled but the electrical cabinet is not yet wired to a destination voltage. Before committing to a dispatch date, request a packing photograph that shows the actual unit, the motor nameplate, and the PLC screen powered on. This confirms the machine is past the factory test stage and not still in sub-assembly.
Container Loading and Dismantling for Transit
The QT4-16 automatic hydraulic block machine ships dismantled to fit standard container dimensions. The main frame, hydraulic station, mixer, and pallet feeder are separated and secured with steel bracing. The 7400 × 1950 × 2800 mm overall footprint means the press section alone occupies most of a 40-foot high-cube container floor. A loading plan should be provided before dispatch so you can arrange the correct forklift capacity and laydown space at your destination port or site [NEED_CITE: standard container loading practices for heavy industrial machinery].
Reading the Specs That Matter on Site
The 21 MPa rated hydraulic pressure and 40 kN vibration force work together to compact the concrete mix into the mould cavity. Higher vibration frequency (up to 4500 r/min) helps consolidate finer mixes like fly ash blends, while coarser aggregate with larger crushed stone benefits from sustained hydraulic dwell. The 900 × 550 mm pallet size determines how many blocks are formed per cycle and must align with the curing rack dimensions and forklift tine spacing already on your site. The PLC control system with fault diagnosis and remote control function allows operators to trace hydraulic or sensor faults from the display, reducing the diagnostic time when a cycle stalls mid-press.
The Hidden Cost of Skipping Pre-Shipment Confirmation
Ordering a stocked machine without locking the electrical specification means the motor, heater, and PLC transformer may all arrive mismatched to local supply. I once traced a field failure back to a control transformer that was rated 380V primary but connected to a 415V supply — the PLC burned out on the second day of production. Equally, if the pallet size does not match the curing racks already built on site, the entire wet-block handling flow breaks down and output piles up on the factory floor [NEED_CITE: electrical mismatch failures in exported concrete equipment]. These are not defects in the machine; they are gaps in the specification handshake that a pre-shipment checklist eliminates.
Why Source This Machine Through Our Stock Channel
Block machinery is our single focus, which means the QT4-16 press, its moulds, pallets, and handling equipment are specified as one matched system rather than assembled from unrelated suppliers. Configuration is set against the buyer’s actual mix design and local aggregate, not a catalogue default, so the vibration force and hydraulic pressure are tuned before dispatch. Moulds for the formats your market sells — including custom drawings — are quoted alongside the machine so lead times are visible upfront. Automation level is selectable, allowing a buyer to start with semi-automatic pallet handling and add stacking or cubing stations later. Every unit undergoes a factory test run with a recorded video before packing, so you see the machine cycle before it enters the container.
Documentation & Verification
- Factory test record showing the QT4-16 cycling on your target block format before crating
- Voltage and PLC display language confirmation sheet signed off prior to dispatch
- Container loading plan with weight distribution and securing details for your freight forwarder
- Mould drawing and format list confirming which cavities ship with the machine
- Hydraulic and electrical schematic matching the as-built configuration
Installation, Commissioning & Support
- 600 m² factory area required; confirm slab thickness and curing zone layout before the QT4-16 arrives
- Power supply must match the confirmed voltage and frequency; dedicate a breaker for the 21 MPa hydraulic pump circuit
- Machine ships dismantled; reassembly sequence covers frame, press, hydraulic station, and pallet feeder
- First-run commissioning includes PLC parameter entry, mould alignment check, and cycle timing per block format
- Operator training covers fault diagnosis on the man-machine interface and routine hydraulic inspection points
- Wear parts list provided at dispatch so initial spares can be ordered before the first mould change
Tell Us What Your Site Needs
To give you a firm dispatch date and arrival estimate, share the block formats you need to produce, the daily output target, and the raw materials available locally. Confirm your site voltage, frequency, and preferred PLC display language so the electrical cabinet is wired correctly before crating. If you already have curing racks and forklifts on site, send their dimensions so the 900 × 550 mm pallet specification is verified against your existing handling equipment.
Frequently Asked Questions
Q: What is the dispatch lead time for the QT4-16 — is it genuinely in stock?
A: Stocked QT4-16 units are available for fast dispatch once the destination voltage, PLC language, and mould selection are confirmed. The electrical and control configuration is finalized at our facility before crating. Built-to-order variants with custom moulds or automation upgrades follow a longer production schedule, quoted at inquiry.
Q: How is the machine dismantled for shipment, and what container is needed?
A: The main press frame, hydraulic station, mixer, and pallet feeder are separated for transit. A 40-foot high-cube container is typically required given the 7400 mm frame length and 5 T mass. A detailed loading plan with weight distribution is provided before dispatch so your port agent can arrange appropriate handling equipment.
Q: Which standard moulds ship with the machine from stock?
A: Standard hollow block and solid block moulds are commonly held in stock alongside the QT4-16 press. Paver, interlocking, and kerbstone moulds may require a production run depending on current inventory. Confirming your required formats at inquiry avoids lead time surprises after the order is placed.
Q: What arrival timeline should I plan for after dispatch?
A: Ocean transit time depends on the destination port and current shipping schedules. Once the container is loaded and documentation is cleared, the voyage duration is quoted upfront. Inland transport from port to site should also be factored into the project schedule, particularly for remote construction locations.
Q: Are voltage and PLC language locked before the machine ships?
A: Yes. The motor winding, control transformer, and PLC display language are all confirmed against your site specification before the factory test. A signed confirmation sheet is included in the documentation package so there are no electrical surprises during commissioning.
