Are you looking for the best expansion joint manufacturers in China? With so many options available, it can be overwhelming to choose the right one. In this article, we’ll compare some of the top expansion joint factories in China, highlighting their strengths, products, and what sets them apart. Let’s dive in and find the perfect fit for your needs.

Compression Seal Expansion Joint for Bridge Construction

Product Details: Compression seals are preformed elastomeric sections with extruded internal web systems, designed to accommodate structure movement in bridges. They are held in place by mobilizing friction against adjacent vertical faces and must be sized and installed to always be in a state of compression. These seals can handle up to 3.10 inches of movement and are typically made from polychloroprene, meeting ASTM D3542 standards. They are used in new construction and require specific installation tools and adhesives like 1520 Lube Adhesive[2][3].

Pros:
– Provides smooth and quiet passage of traffic
– Prevents water runoff and deicing chemicals from damaging structural elements
– Offers long service life
– Can accommodate movements up to 3.10 inches
– Enhances impact resistance with polymer concrete headers

Cons:
– Should not be used when the skew exceeds 30°
– Requires precise installation to maintain compression
– Limited to small to medium movement ranges (1-4 inches)
– May require special consideration for joints with high skew angles

commercial concrete expansion joint sealant

Product Details: This commercial concrete expansion joint sealant is typically a polyurethane or silicone-based product designed for sealing expansion joints in concrete pavements, sidewalks, and other concrete structures. It is available in various formulations, including one-component and two-component systems, and can be applied using different methods such as cold-applied or hot-applied techniques.

Pros:
– Highly flexible to accommodate thermal and structural movements
– Excellent adhesion to concrete and other masonry materials
– Resistant to UV, weathering, and chemical exposure
– Available in various colors and formulations to suit different applications
– Easy to apply with convenient packaging options
– Durable and long-lasting, reducing the need for frequent reapplication

Cons:
– May require specific preparation and priming for optimal adhesion
– Some formulations can have strong odors or VOCs
– Can be more expensive than other types of sealants
– May have limited shelf life once opened
– Requires proper curing time before exposure to heavy traffic or weather

Expansion Joint Covers (Systems) & Movement Joints/Control …

SV313 20KG Polyurethane Expansion Joint Self Leveling PU …

Product Details: SV313 is a one-component self-leveling polyurethane joint sealant. It is designed for use in road, bridge, and airport pavement expansion joints and cracks. The product features high bonding strength and lasting elasticity. It is suitable for minor slopes and can be used in a temperature range of 5~35°C.

Pros:
– High bonding strength
– Lasting elasticity
– Easy to use as a one-component sealant
– Suitable for various applications including road, bridge, and airport pavements
– Self-leveling properties for efficient application

Cons:
– Limited temperature range for application (5~35°C)
– No specific mention of chemical resistance or durability compared to other seala…

Silicone Expansion Joint Sealant 590ml

Product Details: SS861 is a single-component, non-sag type silicone sealant designed for expansion joints, contraction joints, and vertical joints in airfield runways, highways, tunnels, bridges, and other concrete roads. It features low modulus and good expansion & contraction recovery, accommodating concrete joint displacement. The sealant exhibits excellent weatherproof aging properties, resisting high and low temperatures and strong ultraviolet radiation. It has a surface drying time of 1 hour, extrudability of 487 ml/min, and elastic recovery of 85%. The sealant adheres well to concrete without the need for a primer, although a small-scale field adhesion test is recommended before large-scale application.

Pros:
– Excellent weatherproof aging properties
– Good expansion & contraction recovery
– Low modulus
– High extrudability (487 ml/min)
– High elastic recovery (85%)
– No primer necessary for adhesion to concrete
– Resists high and low temperatures and strong ultraviolet radiation

Cons:
– Requires small-scale field adhesion test before large-scale application due to v…
– Storage time is limited to 6 months from the date of manufacture
– Must be stored in a cool and dry place below 27°C

Flush ThinLine Single Seal Floor Expansion Joint 25MM 50MM

Product Details: The Flush Thin Line Single Seal Floor Expansion Joint is designed for interior applications where minimal visual impact is preferred. It is suitable for joint sizes ranging from 25.4mm to 50.8mm (1″ – 2″). The product features a flush, gasketed cover that blends into the flooring surface, making it ideal for wheeled equipment, including wheelchairs. It is available in multiple frame heights and comes in four standard gasket color options. The joint cover is designed to accommodate small interior joints and is compatible with most floor finishes.

Pros:
– Minimal visual impact, blending into the flooring surface
– Suitable for wheeled equipment and wheelchairs
– Available in multiple frame heights and color options
– Compatible with most floor finishes
– Ideal for interior applications where hygiene is important

Cons:
– Limited joint size range (1″ – 2″)
– May require specific installation and maintenance to meet performance standards
– Not suitable for larger joint sizes without custom orders

China Natural Rubber Bridge Expansion Joint for …

Product Details: The China Natural Rubber Bridge Expansion Joint is designed to span gaps between structural elements, absorbing movement, accommodating shrinkage and creep effects, and deformation under vehicle load and temperature changes. It is used in structures such as cable-stayed bridges, suspension bridges, and slab bridges. The joint features high-quality rubber with high shock absorption capacity, flexibility, and damping properties. It ensures perfect road surface continuity with anti-skid grooves for user safety and can be adapted to different average gap sizes.

Pros:
– High shock absorption capacity due to the flexibility and damping properties of…
– Perfect road surface continuity with anti-skid grooves for optimum user safety.
– Versatility to work with different average gap sizes.
– Simple and convenient construction without the need for special stretch frames a…
– Best sealing and waterproof properties, and resistance to acid-base and corrosio…

Cons:
– Requires careful design and specification to match the application, including co…
– Needs regular maintenance to ensure the sealing and smooth operation of the join…
– May require national certification of products to ensure quality, which can add…

China Polyurethane Expansion Joint Sealant Suppliers

Product Details: Junbond JB21 is a one-component, moisture-curing modified polyurethane sealant. It offers good sealing performance and does not corrode or pollute the base material. The sealant is suitable for various construction applications, including expansion joints, and is known for its durability and resistance to weathering.

Pros:
– Good sealing performance
– No corrosion or pollution to base material
– Durability and resistance to weathering
– Suitable for various construction applications including expansion joints

Cons:
– Limited information available on specific product page
– May require specific surface preparation for optimal adhesion
– Curing time may vary depending on environmental conditions

Products – rubber expansion joints manufacturers

Product Details: Rubber expansion joints are designed for the transportation of pressurized fluids, eliminating the need for coupling gaskets. They consist of an inner gel layer, a multi-layer scraping nylon curtain fabric, and a rubber tube with a compound layer composite. These joints are available in various sizes (DN 32 – DN 3000) and installation lengths. They are made with materials such as IIR, CR, EPDM, NR, NBR for the rubber layers, PE cord fabric for the casing ply, and Q235A or stainless steel for the flanges and strengthening rings. They can handle pressures up to 25 bar and provide vacuum stability

on request.

Pros:
– Highly resistant to fatigue and corrosion
– Significant sound-proofing capacity
– Excellent absorption of vibration and flutter in rigid piping systems
– Good flexibility, easy installation, and maintenance
– Eliminates metal to metal contact, stopping the electrolytic process
– Available with various flange materials and union types

Cons:
– Limited axial space for installation
– May require specific installation lengths and configurations
– Material selection must be compatible with the fluid being transported
– Can be more expensive than some other types of expansion joints

Sealing Expansion Joints – China Supplier, Wholesale

Product Details: EPDM rubber expansion joints are designed to provide relief from thermal, extension, and contraction stresses in pipes or duct installations. They can withstand temperatures of up to 110-130°C and are resistant to diluted bases and acids, as well as UV rays, making them suitable for outdoor applications. These joints are available in various sizes, from 1-1/2 inch to 36 inch, and can be constructed with different types of elastomers and reinforcing materials like polyester fabric plies and steel hoops.

Pros:
– Absorb movement to prevent damage to surrounding duct or pipe work
– Reduce maintenance costs by preventing leaks and buckling
– Isolate noise and vibration from mechanical equipment
– Provide extended durability and reliability
– Offer water tightness and wear resistance
– Can withstand variable working environments and pressure exerted by gases

Cons:
– Limited to working pressures of 150 to 225 PSI in most sizes, with higher pressu…
– Require proper installation to ensure even bolting forces and prevent leaks
– May need reinforcement of mating flanges in non-ferrous piping systems

Comparison Table

Frequently Asked Questions (FAQs)

What types of expansion joint products are commonly manufactured in China?

In China, you can find a wide range of expansion joint products. These include metal bellows, elastomeric bearings, pot bearings, spherical bearings, and various types of sealants and fillers. Manufacturers also produce compression seal expansion joints, especially for bridge construction, and different types of expansion joint covers and movement joints for building and floor applications.

What materials are typically used for expansion joint fillers in Chinese factories?

Expansion joint fillers in Chinese factories are made from a variety of materials. Common ones include polyethylene foam boards, bitumen boards, and high-density PE foam. These materials are chosen for their waterproofing properties, durability, and ability to accommodate movement in structures. You can also find sealants made from silane modified polyether, which are eco-friendly and have excellent adhesion to various construction materials.

What are the key features of compression seal expansion joints used in bridge construction?

Compression seal expansion joints used in bridge construction are designed for durability and water-tightness. They typically feature steel-armored nosing anchored to the deck concrete and a chloroprene strip seal with high tear strength and resistance to aging, oil, and ozone. These joints are simple to construct, absorb deformations and shocks, and offer excellent sealing and waterproof properties.

How do Chinese manufacturers ensure the quality and safety of their expansion joint products?

Chinese manufacturers often adhere to international standards and certifications to ensure the quality and safety of their expansion joint products. For example, some products meet ASTM C920 Class 50 standards, and manufacturers may have ISO9001, ISO14001, and OHSAS18001 management system certifications. This ensures that the products are environmentally friendly, non-toxic, and have excellent physical properties.

What is the typical process for ordering and customizing expansion joint products from Chinese factories?

When ordering from Chinese factories, you can usually request samples before placing a large order. Customization is also possible, but it may require additional tooling costs, which can be returned based on the quantity of your future orders. The production time for samples typically ranges from 7 to 10 working days, depending on the complexity of the product.