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Factory Price BS1139 Standard Forged Steel Inner Joint Pin Beam Coupler for Scaffolding Parts1
Construction Equipment Tools, Scaffolding Parts, Swivel Coupler, Cast Scaffold Coupler
Laoting Zhuozhan International Trade Co., Ltd.
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Product Description Product DescriptionRight Angle CouplerRight Angle Coupler is used to connect two scaffolding tubes at 90 degrees, mainly for fixing ledgers to standards. It offers strong load-bearing capacity, anti-slip performance, and is made from durable forged or pressed steel. The galvanized finish provides good corrosion resistance for indoor and outdoor use. ParameterSpecificationProduct NameRight Angle CouplerAdaptation pipe diameterUsually fits standard scaffolding tubes with an outer diameter of 48.3mmMaterialHigh-strength steel (e.g., Q235)Connection AngleFixed 90° right angleFastening MethodUses high-strength bolts (commonly grade 8.8) for secure fasteningSurface TreatmentMostly galvanized (electro-galvanized or hot-dip galvanized) to enhance corrosion resistance, suitable for constructionenvironmentsExecutive StandardComplies with international standards such as EN74 and BS1139 (ensuring quality and safety)weightApproximately 1.3-1.5kg per unit (slightly varying by material and craftsmanship)Board retaining clampBoard retaining clamp fixes scaffolding planks, preventing sliding, shifting or lifting from external forces during construction to ensure worker safety; it features easy installation, compatibility with various planks and crossbars, high-strength steel construction, anti-corrosion treatment and compliance with safety standards, ensuring stability and durability. ParameterSpecificationProduct NameBoard Retaining ClampSuitable Board/FrameCompatible with standard scaffolding planks (e.g., wooden/metal planks with thickness 20-50mm)MaterialHigh-strength steel (e.g., Q235 or Q355)Clamping RangeAdjustable to fit plank thickness, typically 20-50mmFastening MethodEquipped with high-strength bolts (e.g., grade 8.8) for secure lockingSurface TreatmentGalvanized (electro-galvanized or hot-dip galvanized) for corrosion resistanceWorking LoadDesigned to bear plank weight and worker load, usually up to 500-800NWeightApproximately 0.5-0.8kg per unit (varies by size and material)Standards ComplianceComplies with relevant industry standards (e.g., EN 12811, AS/NZS 1576)Girder CouplerGirder Coupler, a key scaffolding component, connects beams/girders for stability, used widely in construction, industrial projects, stage building, etc., often in pairs. It fits 48.3mm tubes; some with 100mm openings for channel steel. Weight: 1.45-3kg (varies by material/craft). Made of Q235/Q355 steel with 8.8-grade bolts, galvanized, meeting standards like EN74.ParameterSpecificationProduct NameGirder CouplerSuitable ApplicationUsed to connect girders, trusses, or large structural members to scaffolding systems or steel framesMaterialHigh-strength alloy steel (e.g., Q355) for heavy load-bearing capacityConnection TypeDesigned for attaching girders to vertical/horizontal supports, with adjustable clamping rangesLoad CapacityTypically rated for 2-5 tons (varies by model; specific load depends on size and material)Fastening MethodHeavy-duty bolts (grade 8.8 or higher) with lock nuts to prevent looseningSurface TreatmentHot-dip galvanized for superior corrosion resistance in outdoor/industrial environmentsCompatibilityAdaptable to various girder profiles (e.g., I-beams, H-beams) and scaffolding tubesStandards ComplianceComplies with EN 1090, AS 4100, or relevant structural steel standardsWeightApproximately 3-6kg per unit (varies by size and load rating)Sleeve clampSleeve clamp, a fastener for tubular components, is compact, easy to install/remove, fits various pipe diameters (some with anti-slip design). Made of high-strength, anti-corrosion steel (wear and rust resistant), it connects/fastens pipes in scaffolding, pipeline installation, frame construction, etc., preventing loosening, ensuring stability, and suits quick assembly/disassembly like temporary supports. ParameterSpecificationProduct NameSleeve ClampMain FunctionUsed to connect or extend scaffolding tubes, pipes, or cylindrical components by sleeving and clampingSuitable Pipe DiameterCompatible with standard scaffolding tubes (e.g., outer diameter 48.3mm) or pipes of similar size; some models are adjustable for 40-50mm diametersMaterialHigh-strength carbon steel (e.g., Q235, Q345) or alloy steel for durabilityClamping MechanismEquipped with a split sleeve design and high-strength bolts (grade 8.8) for tight gripping; ensures axial alignment of connected partsSurface TreatmentHot-dip galvanization or electro-galvanization to resist rust and corrosion, suitable for indoor/outdoor construction environmentsLoad CapacityDesigned for axial loads, typically ranging from 1-3 tons (varies by size and material strength)LengthStandard length is 100-150mm (varies based on application; longer sleeves for extended connections)Standards ComplianceComplies with relevant scaffolding standards such as EN 74 or local construction codesWeightApproximately 0.8-1.2kg per unit (varies by size and material thickness)Swivel CouplerSwivel Coupler a rotatable scaffolding connector for cross pipes, offers 360° rotation for varied angles. Made of high-strength steel with anti-corrosion treatment, it fits standard pipes, easy to install. Used to fix non-right-angle pipes in scaffolding, suitable for arcs/diagonal supports in construction, bridges, etc., ensuring safety and adaptability. ParameterSpecificationProduct NameSwivel CouplerMain FunctionConnects two scaffolding tubes at adjustable angles (not limited to 90°), allowing flexible angular adjustments in scaffolding structuresSuitable Pipe DiameterCompatible with standard scaffolding tubes (outer diameter 48.3mm is common; some models fit 42mm or 51mm tubes)MaterialHigh-strength carbon steel (e.g., Q235) or alloy steel, ensuring load-bearing capacity and durabilityAdjustable Angle RangeTypically 0°-180° (can be locked at any angle within this range for versatile use)Fastening MethodHigh-strength bolts (grade 8.8 or 10.9) with washers and nuts for secure locking, preventing angle slippage under loadSurface TreatmentGalvanized (electro-galvanized for basic protection or hot-dip galvanized for enhanced corrosion resistance in harsh environments)Load CapacityAxial load: up to 10-15kN; Shear load: up to 8-12kN (varies by model and material quality)Standards ComplianceComplies with international standards such as EN 74, BS 1139, or GB 15831 (Chinese standard)WeightApproximately 1.2-1.6kg per unit (varies by size and manufacturing process)putlog couplerPutlog Coupler is used to fix scaffolding planks to scaffolds, ensuring construction safety, and is suitable for various scaffolds and temporary construction. It features a compact structure, quick assembly and disassembly, a load-bearing capacity of 500-1000N,compatibility with various planks and standard crossbars, anti-loosening and corrosion resistance, compliance with standards, and a balance of safety and efficiency. ParameterSpecific SpecificationSuitable Pipe DiameterMainly 48.3mm, some can be compatible with steel pipes with diameters of 40 - 50mm. Common size combinations include 48.3mm×48.3mm and 48.3mm×60mmMaterialUsually Q195, Q235 carbon steel; Q355 alloy steel is used for some high-performance requirementsBolt GradeMostly grade 8.8 high-strength bolts to ensure firm connectionSurface TreatmentCommon electro-galvanizing for general environments; hot-dip galvanizing with better protective performance for highly corrosive environmentsWeight per UnitApproximately 0.6 - 0.65KG, varying with material thickness, craftsmanship and sizeNut SizeCommon specifications include 17mm, 19mm, 21mm, 22mm, 23mm, etc.Executive StandardComplies with EN74 (European standard for small and medium-sized scaffolding components), BS1139 (British standard for scaffolding steel pipes and fittings), etc.Suitable Plank ThicknessGenerally suitable for wooden planks, steel planks or composite planks with a thickness of 20 - 50mmAnti-slip PerformanceSome products have excellent anti-slip performance. For example, Wellmade's pig-ear couplers, tested according to BS1139 - 2.2 standard, have an anti-slip failure load ≥1.07kN, and the standard surface anti-slip failure load ≥6.54kNPackaging MethodUsually 25 pieces/bag, 50 bags/pallet; customized packaging is also available upon requestProduction process The production of scaffold couplers involves a precise and multi-step process to ensure high strength and safety. First, high-quality carbon steel is selected and cut into required sizes. The steel parts are then forged or cast into the coupler shape, followed by machining to achieve accurate dimensions and smooth surfaces. After machining, the couplers undergo heat treatment to enhance hardness and strength. Finally, each coupler is surface-treated-typically hot-dip galvanizing or electroplating-for corrosion resistance. Every piece is strictly inspected for structural integrity, dimensions, and coating uniformity before packaging and shipment, ensuring reliable performance in scaffolding systems.About UsZhuozhan Group is an integrated R&D, production, and sales enterprise specializing in high-quality building materials and scaffolding solutions. Its product portfolio includes ringlock scaffolding, frame scaffolding, steel props, galvanized pipes, and related accessories, widely applied in construction and industrial sectors. The group's manufacturing base, Hebei Shuangyang Metal Structure Co., Ltd. (established in 2014), spans 13,132 square meter with over 500 employees and 150+ production units, achieving annual outputs of 300,000 tons of steel pipes, 450,000 tons of Scaffolding, and 5 million Steel props. Equipped with R&D, quality control, and full operational departments, the company holds 15+ technical patents. Its products cover 30+ Chinese provinces through 150+ partnerships and export to Asia, Europe, Africa, and America, with annual sales exceeding $20 million. CertificateOur scaffolding products have obtained multiple internationally recognized certifications, including EN12810/EN12811 European standards, AS/NZS 1576 Australian/New Zealand standards, and the ISO 9001 quality management system certification. These certifications cover various aspects such as structural design, load-bearing capacity, corrosion resistance, and operational safety, ensuring compliance with strict safety and quality requirements for construction projects in different countries and regions. In addition, we possess complete third-party inspection reports and can provide inspection services from organizations such as SGS, TüV, and BV upon customer request, further ensuring the international applicability and market access of our products.customer feedbackOur customers worldwide highly appreciate the quality, durability, and ease of assembly of our scaffolding products. Many have praised our professional service, timely delivery, and reliable logistics support. Feedback consistently highlights the stability and safety of our scaffolding in various construction projects, as well as the flexibility of our OEM/ODM customization options. We value every customer's experience and continuously strive to improve our products and services to meet global standards. Packaging & Shipping We offer professional and reliable sea freight services for scaffolding products worldwide. All components, including standards, ledgers, braces, and steel planks, are carefully sorted, bundled, or palletized to ensure safe handling during loading, transportation, and unloading. Our packaging is optimized to maximize container space, reduce movement, and minimize the risk of damage. In addition, we provide clear labeling and documentation to facilitate customs clearance and smooth delivery. With years of export experience, we ensure timely shipping, secure transit, and proper insurance coverage, giving our customers peace of mind and efficient logistics support for their global projects.FAQQ1: What material are the couplers made of?A: Scaffold couplers are made of high-quality carbon steel, ensuring durability and high load-bearing capacity.Q2: What types of couplers are available?A: Common types include right-angle (fixed) couplers, swivel (universal) couplers, sleeve couplers, and putlog couplers.Q3: Are the couplers corrosion-resistant?A: Yes, couplers are typically hot-dip galvanized or electroplated, providing excellent protection against rust and weather conditions.Q4: What scaffolding systems are these couplers compatible with?A: They are compatible with standard tube scaffolding, ringlock, cuplock, and other modular scaffolding systems.Q5: What is the load capacity of the couplers?A: Load capacity depends on the type and size of the coupler; all products comply with international standards such as BS 1139 and EN 74.Q6: Can the couplers be reused?A: Yes, they are durable and can be reused multiple times in various projects.Q7: Can I place a custom order?A: Yes, we accept custom orders for size, type, coating, and quantity to meet specific project requirements.Q8: How are the couplers shipped?A: Couplers are bundled, boxed, and labeled carefully to ensure safe delivery for bulk orders or container shipments.
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