Steel Formwork For Concrete

Steel formwork for concrete is a type of template support specially designed for the construction of concrete structures. Compared with traditional wooden formwoks, it is more solid and durable, easier to dismantle, and has higher construction efficiency. Steel formwork for concrete is widely used in various concrete structure constructions such as bridges, tunnels, large factories, and underground projects.

● use of formwork steel

1, In the construction of bridges and roads
steel formwork for concreteis often used in the construction of key parts such as bridge piers, abutments, beams and slabs. In road construction, steel formwork panels are also widely used in the construction of pavement and roadbed, ensuring the stability and durability of road structure.

2, In the construction of building structure
In building construction, steel formwork is an essential tool for pouring concrete structures such as columns, wall panels, and floor slabs. steel formwork for column, steel formwork for slab, steel formwork for concrete walls can greatly improve construction efficiency, reduce the use of wood, and is environmentally friendly. steel formwork system is also suitable for the concrete structures of industrial buildings such as factories, warehouses, and workshops.

3. In water conservancy projects:
Steel formwork for shuttering is often used in the concrete construction of water conservancy facilities such as dams, sluice gates, and channels, it can ensure the stability and safety of water conservancy projects.

4, In the construction of underground structures:
In the construction of underground structures such as subways, tunnels, and basements, steel plate formwork is highly favored due to its high strength and durability.

5, In the construction of special structure:
For projects with special requirements for the shape of the formwork, such as special-shaped structures and curved structures, steel formwork can meet their special needs and achieve precise concrete pouring. The construction poured by steel circular column formwork have a flat and smooth surface and standard size, meeting the construction quality requirements.

● Steel formwork details

Steel formwork materials	Q235 steel plate
Length	900-1800mm(customizable)
Width	200-600mm(customizable)
Height	55mm(customizable)
Plate Thickness	3-5mm(customizable)
Welding Technique	CO2 Arc Welding
Surface Treatment	spray painted, powder coated

● steel formwork components

The steel formwork is mainly composed of steel formwork panels, steel formwork support systems, and connectors.

1.steel formwork panelsare the main part of the steel formwork, usually made of steel. The steel formwork design and steel formwork sizes can be customized, generally the width is 50mm, 100mm, 150mm, 200mm, etc., and the length is 300mm, 450mm, 500mm, 600mm, 900mm, 1200mm, 1500mm, etc.

2. steel formwork support systems:The support system is the skeleton of the steel formwork, which is used to support the panel and ensure its stability. The support system usually consists of steel frame formwork, steel pillars, steel props formwork, back ribs, etc.

3. Connectors: Connectors are used to connect the various parts of the steel formwork together, including between panels and between panels and supports. Connectors usually include bolts, nuts, U-shaped cards, L-shaped pins, steel tie rod formwork,steel formwork clamp etc.

● Steel formwork advantages and disadvantages

Steel formwork advantages
1, High strength and high stability: steel formwork for sale has high strength and high stability, can withstand large loads and pressure, reduce deformation and loss of formwork, and ensure the quality and safety of your construction.

2, Long life: steel formwork for sale is corrosion-resistant, wear-resistant, and not easy to rust. It can keep the surface smooth and flat for a long time, prolong the service life of the formwork, and reduce the cost of frequent replacement of formwork.

3, Environmental protection and energy saving: The use of steel formwork system does not require a large amount of natural resources such as logs, avoids deforestation and environmental damage, and can be reused many times (steel formwork reusable time is about 60times), reducing the waste of materials and resources.

4, High construction efficiency: steel fixers formwork is fast to install and easy to disassemble, which can improve construction efficiency and shorten construction period.

5, Good fire resistance: steel formwork for concrete for sale has good fire resistance, can provide higher safety and reduce fire risks.

Disadvantages of steel formwork
1, High processing difficulty and cost: Due to the material and characteristics of building steel formwork, its processing difficulty and cost are high, especially for projects with customized requirements, which may increase the construction cost.

2, Heavy weight: The steel formwork for concrete is heavy, and you will spend more money in labor and mechanical equipments for transportation and steel formwork installation.

3, Poor thermal insulation performance: Compared with wooden formwork, the thermal insulation performance of steel formwork panels is poor, and additional insulation work may be required during construction.

4, Poor anti-slip performance: The surface of the iron formwork is relatively smooth, and it is easy to slip when using.

5, Maintenance and maintenance requirements:You should treat the steel fixing and formwork with certain anti-rust treatment and maintenance during use to ensure its service life and quality.

● Types of steel formwork

According to the application type of steel formwork, it can be divided into: building steel formwork, bridge steel formwork, hanging basket steel formwork, tunnel steel formwork, etc.

According to the shape of the steel formwork pouring, it can be divided into: box girder formwork, T-shaped girder formwork, capping beam formwork, hollow beam formwork, circular steel formwork, beam guard formwork, pier head formwork, etc.

● About us

Fychis is a leading manufacturer specialized in steel formwork and aluminium formwork production, primarily focusing on bridge steel formwork, pile cap steel formwork, tunnel steel formwork, trolley steel formwork, and more. Additionally, we also supply steel formwork for concrete slab, steel formwork pegs, steel formwork pins, and a range of steel formwork accessories.

In addition, we can provide personalized customization according to customer needs. We have a large warehouse, which can ensure a large number of spot goods available all year round. If you want buy steel formwork, we provide you not only good quality steel formwork and steel formwork accessories (such as steel pegs for formwork) with preferential prices, and also steel formwork design calculation with one-step construction solution.

● Steel formwork installation and demolition

Steps for steel formwork installation:
Lifting the negative angle formwork and positive angle formwork → lifting the unilateral internal wall formwork, positioning the formwork and straightening the formwork → putting on the through-wall bolts and placing PVC casing → lifting the unilateral external wall formwork, positioning the formwork and straightening the formwork → tightening the through-wall bolts and adjusting the verticality → joint connection treatment.

Steps for demolition of steel formwork:
Dismantling the formwork connecting devices → dismantling the steel formwork → dismantling the positive angle formwork → dismantling the negative angle formwork.

Requirements for concrete strength during steel formwork demolition:
The formwork can be removed only when the wall reaches the strength specified in the construction specifications, and its strength should ensure the smooth disassembly of the through-wall bolts. The concrete strength of the fully cast-in-place outer wall must reach 7.5Mpa before the external hanging frame can be hung.

● Preparations before using building steel formwork

(1) Preparation of tools and auxiliary materials:
Prepare tools such as spanners, hammers, scraper blades, and angle grinders according to the construction requirements on the construction site. Prepare auxiliary materials (such as sponge strips, single-sided adhesive strips, PVC casing pipes, release agents, wooden beams, guardrails, etc) according to the steel formwork construction requirements.

⑵ Preparation of loading and unloading sites for steel formwork for concrete:
The site should be flat and solid, with no water accumulation. The horizontal stacking of steel formwork should not exceed 10 pieces, otherwise it will cause deformation of the formwork. When lifting, you should avoid collisions of steel formwork panels. Channels should be left between adjacent stacking areas of the formwork to facilitate the installation of components of steel formwork.

(3)Preparation of the stacking site for steel formwork:
Since the steel formwork is large in size and heacy in weight (125 kg/m2), the concrete construction steel formwork should be stacked centrally within the working radius of the tower crane to facilitate direct lifting and transportation.

(4) Technical briefing:
The construction team requires full-time personnel and professional construction teams to be responsible for the construction of the steel formwork on site, and they are required to be familiar with the design of steel formwork, as well as the formwork construction safety regulations.

(5) Measurement and layout work:
Only by ensuring the accuracy of measurement and layout, can you guarante the accuracy of template installation position.

(6) Applying mold-release agent:
Before applying the mold release agent for the first time, the oil and rust on the surface of steel formwork panels must be cleaned. The mold release agent should be applied thinly and evenly, and no mold release agent should be accumulated. When applying the mold release agent, the mold release agent should be applied quickly. Do not apply it again after the film is formed to avoid glue.

(7) Trial intallation of steel formwork:
Before the formal installation of the steel formwork system, a trial installation should be carried out according to the number of the formwork to check whether the dimensions of the formwork are suitable, whether the accessories are installed properly, and whether the joints of the formwork are tight. If any problems are found, adjustments should be made in time to ensure the progress of the project.

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