China Tube And Clamp Scaffolding Manufacturers Suppliers Factory - Wholesale Service

Tube and Clamp Scaffolding Manufacturer for Complex Structures & Industrial Projects

Traditional tube and coupler scaffolding engineered for complex industrial maintenance, shipyards, and irregular architectural structures. Configured with 48.3 mm OD structural steel tubes and EN 74-certified drop-forged or pressed steel clamps, providing infinite angular adjustment and high-load rigid connection capabilities without fixed modular node constraints.

48mm Scaffold Tube
Scaffolding hot dip galvanized 48mm Scaffold tube
48mm Scaffold tube or 48.3mm scaffold pipes is the main material in construction and maintenance projects. Our scaffolding tube are made...
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33.7 mm Scaffold Tube
Tube and clamps scaffolding 33.7mm scaffold tube for construction
The 33.7mm scaffold tube offers stability for scaffolding structures. This size is commonly used in tube and clamp...
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Galvanised Scaffold Tube
Hot dip galvanized scaffold tube for building
Galvanized scaffold tube is a durable and corrosion-resistant component used in scaffolding systems. Made from high-quality steel, these tubes...
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21ft Scaffold Tube
21ft scaffold tube is the standard size used in many scaffolding systems, offering excellent compatibility with other components such as couplers, clamps, and ledgers. The 6.4 meters scaffold tube...
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60mm Scaffold Tube
Heavy duty 60mm scaffold tube
The 60mm scaffold tube is a heavy-duty, high-strength component used in large-scale scaffolding systems. Made from good quality steel, it have big load-bearing...
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Product Types & Configurations

Structural Scaffold Tubes
High-tensile steel tubes serving as upright standards, ledgers, transoms, and bracing members, cut to precise lengths with deburred ends.
Lengths: Standard 6.0m (custom cuts available from 1.0m to 6.4m)
Tubing Specifications: 48.3 mm OD x 3.2 mm (Type 4) / 4.0 mm (Type 3) wall thickness
Feature: Manufactured from structural grade steel with strict outer diameter and straightness tolerances to ensure uniform coupler grip across the entire span.

Right-Angle Couplers (Double Couplers)
Drop-forged or pressed steel fasteners used to connect two intersecting scaffold tubes at fixed 90-degree right angles for primary load-bearing joints.
Types: Drop-Forged Right-Angle Couplers (BS 1139 / EN 74-1 Class B), Pressed Steel Right-Angle Couplers (Class A)
Feature: Designed to withstand high slip and torsion loads on vertical standards and horizontal ledger intersections.

Specifications & Materials

Component Parameter	Technical Specification	Standard Compliance
Scaffold Tube Steel Grade	S355J2H / Q345B (Heavy Duty); S235JR / Q235B (Standard Duty)	EN 10210 / EN 10219
Tube Outer Diameter (OD)	48.3 mm (+/- 0.25 mm)	BS 1387 / EN 39
Coupler Body Material	Drop-Forged Carbon Steel (EN-GJS or C20 equivalent)	EN 74-1 / BS 1139
T-Bolts & Nuts	M16 High-Tensile Steel, Grade 8.8, surface zinc-plated	DIN 933 / ISO 4017
Surface Protection	Hot-Dip Galvanized (>= 85 µm / 610 g/m2 on tubes; >= 55 µm on couplers)	ISO 1461 / ASTM A123
Right-Angle Slip Load	Minimum 9.1 kN slip resistance under standard tightening torque (54 Nm)	EN 74-1 Class B
Swivel Torque Resistance	Minimum 9.1 kN slip resistance under 54 Nm bolt torque	EN 74-1 Class B

Safety, Quality & Standards

Every batch of tubes and couplers undergoes rigorous raw material testing, mechanical torque verification, and slip-resistance load testing before release.
[Raw Steel / Billet Inspection] ---> [Drop-Forged / CNC Processing] ---> [Slip & Torque Load Testing] ---> [Hot-Dip Galvanizing] ---> [Batch Audit]

Mill Certification & Traceability

Raw steel tubes and forging billets are accompanied by EN 10204 Type 3.1 Material Test Reports (MTR) verifying chemical composition, yield strength (>= 355 MPa), and tensile limits. Heat numbers and manufacturer identification stamps are embossed directly onto forged coupler bodies.

Mechanical Testing & Quality Control
Slip & Tensile Testing: Random samples from every forging batch are subjected to hydraulic testing rigs to verify that right-angle and swivel couplers withstand a minimum slip load of 9.1 kN without slipping under 54 Nm bolt torque per EN 74-1.

Thread Integrity Check: T-bolt threads undergo go/no-go gauge inspection to prevent stripping or binding during jobsite assembly.

Structural Compliance
Europe & International: Fully certified to BS 1139, EN 74-1 (Classes A and B), and BS EN 39 / EN 10210.
Australasia: Conforms to AS/NZS 1576.2 requirements for scaffolding fasteners and tubes.

Customization & System Compatibility

Universal Compatibility
Our 48.3 mm tubes and EN 74 couplers adhere strictly to global standard dimensions, allowing complete intermixing with existing contractor inventories, legacy tube stocks, and modular system scaffolding tie-ins.

Customization Options
Custom Tube Lengths: Exact cut lengths (e.g., 1.0m, 1.5m, 3.0m, 6.0m) bundled to project specifications.

Wall Thickness Options:3.2 mm standard wall or 4.0 mm heavy-duty industrial wall tubing.

Branding & Embossing: Customer company initials or logo codes drop-forged directly onto coupler bodies for asset tracking and fleet security.

Specialized Finishes: Electro-plated zinc, yellow passivated, or heavy-duty hot-dip galvanized coupler finishes matching environmental exposure needs.

Manufacturing, Bulk Supply & Export

Production Facility Capacity
Equipment Setup: 6 automated forging press lines (from 400T to 1000T), 12 CNC machining centers for bolt hole tapping, and 2 continuous hot-dip galvanizing lines.
Monthly Output: 2,500 metric tons of scaffolding tubes and 1.5 million units of forged couplers.

Quality Control Checkpoints
Forging Integrity: Ultrasonic and magnetic particle inspection on forged coupler bodies to detect micro-cracks or internal casting voids.

Galvanizing Thickness Check: Magnetic gauge verification ensuring zinc coating thickness meets or exceeds ISO 1461 standards.

Assembly & Packing Inspection: Torque testing of assembled T-bolts and nuts to ensure smooth, binding-free rotation prior to boxing.

Packaging & Export Logistics

Scaffold Tubes

Bundled in heavy steel strapping (typically 30 to 61 pieces per bundle) with integrated lifting slings.

Couplers

Packed in heavy-duty export plywood boxes or robust steel stillages (typically 500 to 1000 pieces per crate) to prevent transit loss.

Container Loading Density

22 to 26 metric tons per 20ft GP container, optimized for mixed tube-and-clamp bill of materials.

CErtificate

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FAQ

Q: Are your drop-forged couplers certified to EN 74 Class B standards?

A: Yes. All our drop-forged right-angle and swivel couplers are manufactured and tested strictly in accordance with EN 74-1 Class B specifications, ensuring they withstand higher slip and load thresholds required for heavy industrial applications.

Q: What is the difference between Class A and Class B couplers?

A: Class A couplers are designed for standard construction applications with lower slip load requirements, whereas Class B couplers (such as our heavy-duty drop-forged range) are engineered for higher slip resistance (minimum 9.1 kN) and torsional rigidity, making them mandatory for heavy industrial plant maintenance and power stations.

Q: How do you prevent thread stripping on coupler T-bolts?

A: Our T-bolts are cold-rolled from high-tensile steel (Grade 8.8) and undergo automated thread profiling and go/no-go gauge inspection. Nuts are tapped with precise tolerances to ensure smooth tightening up to the specified 54 Nm torque without thread galling.

Q: What mill test certificates are provided with bulk tube orders?

A: Every shipment includes EN 10204 Type 3.1 Material Test Reports (MTR) detailing chemical element percentages and mechanical yield/tensile strength results corresponding to the specific steel coil heat numbers.

Q: Can we request custom-length scaffold tubes for shipyard projects?

A: Yes. We routinely cut, deburr, and galvanize custom tube lengths (ranging from 0.5m to 6.4m) tailored to specific shipyard staging, boiler access, or civil engineering requirements.

Q: What is the standard packaging format for export container shipments?

A: Scaffold tubes are bundled in secure steel-strapped lifts fitted with lifting points for crane discharge, while couplers are packed in heavy-duty export-grade wooden crates or steel stillages to prevent component loss during sea freight.

Request a Technical Quote

Submit your project bill of materials (BOM), required tube lengths, wall thickness specifications, and coupler types. Our engineering team provides structural load data, compliance documents, and FOB/CIF factory pricing within 24 hours.

Direct Line: +8613622012720
Technical Support and Sales: info@irontrix.com
Factory Address: No.60 Jingwang Road, Daqiuzhuang Town, Jinghai District, Tianjin City, China

As one of the most professional tube and clamp scaffolding manufacturers and suppliers in China, we offer a wide range of products with superior quality. Please rest assured to wholesale bulk durable tube and clamp scaffolding made in China here from our factory. Contact us for more details.

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