During the construction of commercial buildings, concrete pouring is one of the key procedures that determine project quality and construction efficiency. Traditional construction methods relying on manual chutes and supplementary feeding by truck-mounted concrete pumps are not only labor-intensive but also prone to dead pouring zones, concrete segregation and other defects. As special construction machinery matched with concrete trailer pumps, concrete placing booms can distribute pumped concrete evenly onto working surfaces, and have been widely applied to underground floors, standard floors of housing projects, bridges, large-area floor slabs and other construction scenarios at present.

By driving mode, they are divided into manual placing booms and hydraulic placing booms; by travelling mode, they fall into four types: stationary, floor self-climbing, wheel-mounted mobile and crawler-mounted.

The equipment mainly consists of four core components:

1. Placing boom and delivery pipeline: Multi-section truss booms are equipped with Φ125 high-pressure concrete delivery pipes internally, fitted with wear-resistant hoses at the discharge end. The standard placing radius ranges from 12m to 32m.
2. Slewing mechanism: Supported by slewing bearings to realize 360° rotation of the whole boom, covering the entire working area for concrete distribution.
3. Base support: Stationary units are fixed on floors with counterweight bases or embedded anchor bolts; mobile versions are equipped with wheel or crawler undercarriages for on-site relocation; self-climbing units are installed inside elevator shafts and lifted floor by floor via hydraulic jacking systems.
4. Control system: Manual models are rotated by manual pushing, while hydraulic versions support wireless remote control or wired handle operation for easier manipulation.

Manual placing booms are economical solutions rotated manually with non-foldable booms, commonly available in 12m and 15m specifications. They feature low cost and simple installation, suitable for small construction sites, floor slabs and small factory buildings. Their drawbacks include heavy labor dependence, bulky structure and inconvenient feeding at edge areas.

Crawler-mounted placing booms adopt steel crawler undercarriages with large contact area and ground bearing pressure ≤0.1MPa, avoiding sinking on muddy and soft soil ground. They can climb slopes of 12° to 15°, with full-hydraulic drive enabling pivot steering, forward and backward movement without crane-assisted relocation, ideal for complex sites such as deep foundation pits and slope works as well as road & bridge projects. Self-climbing placing booms ascend floor by floor inside elevator shafts without pre-embedded bases or repeated disassembly and assembly, perfectly matching high-rise commercial buildings and office buildings for core wall pouring.

Overall, concrete placing booms possess prominent strengths:

Firstly, labor cost reduction: fewer on-site concrete distributors are required, and manual chute erection work is eliminated. Secondly, improved pouring quality: fixed-point feeding effectively reduces concrete segregation and construction cold joints. Thirdly, strong adaptability to narrow spaces: foldable booms can reach basements, foundation pits, elevator shafts and other areas inaccessible to truck-mounted pumps. Fourthly, superior cost performance: lower procurement and rental costs compared with truck-mounted concrete pumps, presenting remarkable economic benefits for large-scale continuous pouring. Field construction statistics show that qualified concrete placing booms can boost pouring efficiency by over 40% and cut construction defect rates by more than 80%. Many contractors confirm that such equipment shortens construction cycles and lowers overall project costs effectively.

Cangzhou Tongda Heavy Industry Machinery Co., Ltd. is a local manufacturer specializing in the R&D and production of concrete placing booms. It is equipped with advanced production equipment, complete testing instruments and a professional engineering technical team for new product development. Its self-developed concrete placing booms adopting German technologies are manufactured with high-strength boom steel and optimized structural design to achieve 360° dead-angle-free concrete distribution, featuring stable operation, convenient operation and balanced cost-effectiveness and practicality.

The company has engaged in independent R&D, manufacturing and export sales of relevant products since 2008, covering manual, electric and other series. Standard specifications include 15m, 18m and 21m placing radii, with customized radius and height available for specific projects applicable to high-rise residential buildings, commercial complexes, bridges, tunnels and other projects. Customized models including mobile type, crawler type, self-climbing type, special models for girder prefabrication yards and ship-mounted placing booms are also available. All products comply with China’s mechanical industry standard JB/T 10704-2007 Concrete Placing Equipment抖音百科. Furthermore, the enterprise supplies supporting wear-resistant pipe fittings and pump tubes, forming an integrated supply system of main machines plus spare parts to satisfy one-stop procurement demands of various construction projects.

When selecting placing equipment for commercial building projects:

1. Determine the optimal model based on actual working conditions: adopt self-climbing units for high-rise commercial buildings to ascend automatically with floors without repeated disassembly and transportation; select crawler-mounted units for deep foundation pits and muddy sites capable of self-moving without hardened ground; choose wheel-mounted mobile booms for large-area floor pouring in factories and underground parking lots to facilitate short-distance relocation and improve working efficiency.
2. Verify whether core parameters fit project requirements, including placing radius, slewing coverage, power type and delivery pipe diameter; customized specifications can be ordered for special working conditions.
3. Prioritize products complying with national industrial standards and confirm the supplier’s spare parts supply capacity to reduce maintenance and procurement costs in later operation stages.

Q: How to strike a balance between cost and practicality when selecting concrete placing booms for commercial building construction?

A:

1. Match equipment specifications to core construction demands instead of blindly choosing oversized or multi-functional models. For small commercial projects, standard manual or electric units are sufficient; self-climbing booms deliver higher cost efficiency for high-rise projects.
2. Choose suppliers offering integrated supply of main machines and spare parts to save time and capital expenditure on subsequent component procurement.
3. Prioritize standard-compliant products to lower failure rates during operation and reduce long-term running costs.

A concrete placing boom is special construction machinery matched with concrete trailer pumps to evenly distribute pumped concrete onto pouring working surfaces. It can replace manual chutes and supplementary concrete feeding by truck-mounted pumps, and is widely applied to underground floors and standard floors of building projects, bridges, large-area floor slabs and foundation pit concrete construction.

Classified by driving mode, it falls into two categories: manual placing booms and hydraulically driven placing booms. By travelling mode, it is divided into four types: stationary, floor self-climbing, wheel-mounted mobile and crawler-mounted.

Manual placing booms are rotated by manual force with non-foldable booms. Featuring low cost and simple installation, they are commonly available in 12m and 15m specifications and mainly used for small construction sites, floor slabs and small factory buildings. Their disadvantages include high labor dependence, cumbersome operation and inconvenient concrete feeding at edge areas.

Hydraulically driven placing booms dominate the current market. Their boom lifting, folding and overall slewing are controlled by hydraulic cylinders, enabling one-person remote control operation. Subtypes including floor self-climbing, wheel-mounted mobile and crawler-mounted models are tailored respectively for high-rise construction, short-distance relocation on hardened ground and heavy-duty operation on complex terrain. Tower-type stationary placing booms require embedded foundations for fixation and are suitable for long-term fixed-point pouring in large-scale infrastructure, dams and prefabricated component factories.

Typical heavy-duty construction scenarios cover deep foundation pits, bridge piers and abutments, tunnels and large water conservancy projects. Such sites are generally characterized by soft foundations, complicated terrain, narrow working areas and huge concrete pouring volume, which impose strict requirements on the terrain adaptability, structural load-bearing capacity, operational flexibility and pouring precision of placing equipment.

Ordinary manual and wheel-mounted placing booms tend to sink into soft ground, suffer inconvenient relocation and insufficient coverage on these sites, hence special heavy-duty placing booms are required.

Cangzhou Tongda Heavy Industry Machinery Co., Ltd. is one of China’s early enterprises engaged in the R&D and production of concrete placing booms. It has carried out independent R&D, design, manufacturing and export of relevant products since 2008. Equipped with advanced production equipment, complete testing instruments and a professional engineering R&D team, the company optimizes product structures by introducing German technologies.

Its concrete placing booms adopt high-strength boom materials to realize 360° dead-angle-free concrete distribution, with stable and reliable hydraulic systems, easy operation and balanced cost performance and practicality. Focusing on the core business of concrete placing booms, the company also produces supporting wear-resistant pipe fittings and pump tubes, building an integrated supply system of main machines plus spare parts to meet the construction demands of various engineering projects.

Its product portfolio covers manual, electric and hydraulically driven models. Standard specifications include placing radii of 15m, 18m and 21m, with customized radius and height available for specific projects to fit high-rise residential buildings, commercial buildings, bridges, tunnels and other construction scenarios. Custom heavy-duty models such as crawler-mounted units, special booms for girder prefabrication yards, ship-mounted booms and layered placing equipment matched with tunnel lining trolleys are available. All products fully comply with China’s industrial standard JB/T10704-2007 Concrete Placing Equipment.

The crawler-mounted placing booms customized for heavy-duty working conditions are fitted with steel crawler undercarriages with ground bearing pressure ≤0.1MPa, effectively preventing sinking on muddy and soft foundations. They can climb slopes of 12°~15°. The full-hydraulic drive supports pivot steering, forward and backward movement under wireless remote control without relocation assistance from cranes. Its transfer efficiency is 80% higher than that of conventional stationary placing booms, capable of working on muddy, gravelly and sloped sites inaccessible to wheel-type and stationary placing booms.

• Manual models are recommended for small-area floor slabs and low-rise construction to cut costs;
• Self-climbing booms are adopted for core wall pouring of high-rise residential and office buildings, which ascend automatically with floor progress without repeated disassembly and installation;
• Wheel-mounted mobile booms apply to large-area pouring of factory buildings and underground parking lots on hardened ground;
• Crawler-mounted booms are prioritized for heavy-duty complex projects including deep foundation pits, road & bridge works and water conservancy projects.

• The placing radius shall fully cover the working area; standard options range from 12m to 32m, and larger customized sizes are available for special demands;
• Models with 360° full slewing function are preferred to eliminate pouring blind zones;
• Φ125 standard delivery pipes are recommended to match most trailer pump configurations on construction sites;
• Diesel-powered units can be selected for field operations without external power supply to remove power supply restrictions.

Compared with truck-mounted concrete pumps, placing booms work with external trailer pumps and feature lower procurement and operation costs. They have prominent advantages in narrow foundation pits, underground spaces and high-rise floors. The overall cost of large-scale continuous pouring is approximately 40% lower than renting truck-mounted concrete pumps.

In the field of construction engineering, the efficiency and quality of concrete pouring directly determine the overall progress of a project. The special construction machinery that works in tandem with concrete trailer pumps to evenly distribute pumped concrete onto the pouring working surfaces is an essential piece of equipment used to replace manual chutes and cover the blind operating areas of truck-mounted concrete pumps, namely the concrete placing boom.

A concrete placing boom is special engineering machinery matched with concrete trailer pumps to evenly distribute pumped concrete onto pouring working surfaces. It can replace manual chutes and supplementary concrete pouring at dead zones of truck-mounted concrete pumps, and is now widely adopted for concrete construction of basements and standard floors in housing projects, bridges, large-area floor slabs, foundation pits and other working conditions.

A concrete placing boom mainly consists of five assemblies: boom and delivery pipeline, slewing mechanism, base support, feeding hopper and control system. Φ125 high-pressure concrete delivery pipes are laid inside multi-section truss booms, equipped with wear-resistant hoses at the discharge end. Standard placing radii include 12m, 15m, 17m, 20m, 24m, 28m and 32m. The slewing mechanism enables 360° rotation of the boom for full-area concrete distribution. The base support is classified into stationary, mobile and self-climbing types for different construction scenarios. The feeding hopper connects the delivery hose of trailer pumps to guide concrete into the pipeline of the placing boom. In terms of control systems, manual models are rotated by manpower, while hydraulic placing booms adopt hydraulic cylinders for luffing and slewing, operated via wireless remote controllers or wired handles.

Based on product classification, mainstream concrete placing booms on the market fall into three categories:

Manual placing booms are cost-effective entry-level products rotated manually without hydraulically foldable booms. Available commonly in 12m and 15m sizes, they are applied to small construction sites, floor slabs and small factory buildings. Their merits lie in low cost and easy installation, whereas the disadvantages are high labor consumption, inflexible operation and inconvenient feeding at edge positions. Hydraulic placing booms dominate the current market. Hydraulic cylinders control boom lifting, folding and overall slewing, which can be operated by a single worker through remote control. They are further divided into floor self-climbing, wheel-mounted mobile and crawler-mounted variants. Tower-type/stationary placing booms require embedded foundation fixation, suitable for long-term fixed-point pouring in large infrastructure projects, dams and precast component factories.

Different types of concrete placing booms fit distinct working conditions:

Manual models suit small-scale projects with limited budgets and narrow construction ranges; Self-climbing booms rise floor by floor through hydraulic jacking inside elevator shafts without repeated disassembly and assembly, ideal for high-rise residential buildings and office towers; Wheel-mounted mobile booms support short-distance relocation on hardened ground, perfect for large-area floor pouring of parking garages and workshops; Crawler-mounted booms are fitted with steel crawler undercarriages featuring ground bearing pressure ≤0.1MPa. They resist sinking on muddy and soft ground and can climb slopes of 12°~15%, making them applicable to unhardened sites such as deep foundation pits and bridge piers; Tower-type stationary booms are designed for long-term fixed operation of large infrastructure projects.

Compared with truck-mounted concrete pumps, concrete placing booms do not come with built-in pumping systems and work with external trailer pumps, resulting in lower procurement and rental costs. They show prominent advantages in narrow foundation pits, underground spaces and high floors where truck pumps cannot operate, delivering higher cost efficiency for large-scale continuous concrete pouring.

Driven by the growth of domestic infrastructure and housing construction industries, concrete placing booms have witnessed rapid technical upgrading, and many domestic manufacturers have acquired mature independent R&D and manufacturing capabilities.

Cangzhou Tongda Heavy Industry Machinery Co., Ltd. is equipped with advanced production equipment, complete testing devices and a professional engineering R&D team. Its self-developed concrete placing booms optimized with German technologies adopt high-strength boom materials and refined structural design to realize 360° dead-angle-free pouring. The hydraulic system operates stably and conveniently with balanced cost performance and practicality.

The company has carried out independent R&D, manufacturing and export of concrete placing booms since 2008, covering manual, electric and other series. Standard specifications are 15m, 18m and 21m, with customized placing radius and height available for projects including high-rise apartments, commercial buildings, bridges and tunnels. Custom special models such as crawler-mounted units, girder-yard dedicated booms, ship-mounted booms and layered placing equipment matched with tunnel lining trolleys are also available. All products fully comply with China’s industry standard JB/T10704-2007 Concrete Placing Equipment. The enterprise also manufactures supporting wear-resistant pipe fittings and pump tubes to build an integrated supply system of main machines plus spare parts satisfying the demands of various construction projects.

Field feedback from construction contractors indicates that these national-standard compliant placing booms cut manual labor for concrete distribution by over 60% and reduce the occurrence rate of construction cold joints by 55%, demonstrating outstanding operational stability in deep foundation pits and high-rise residential projects.