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Product Description

Produced by welding high-strength steel pipe with end flanges, stiffener rings, and adjustable telescopic ends (live end). Features high axial load capacity, easy length adjustment, reliable locking mechanism, and good reusability. Available steel grades: Q235B, Q355B, Q420B, S355JR. Diameter range: 400mm – 1200mm (standard: 400, 450, 500, 550, 600, 609, 630, 800, 900, 1000, 1200mm). Wall thickness: 10mm – 20mm. Single section length: 2m – 6m (custom available). Total assembled length: up to 24m by coupling sections. End types: fixed end (flat plate) and adjustable live end (telescopic with pin holes or screw jack). Surface finish: black (as-welded), painted (anti-rust primer + top coat, usually yellow or orange), or hot-dip galvanized. Connection: bolted flanges with high-strength bolts. Stiffener rings installed at intervals for buckling resistance. Meets GB/T 14977, EN 10219, or BS 5950 standards. Custom diameters, wall thicknesses, and lengths available upon request.

Parameter

Product Name	Steel Strut (Steel Pipe Support / Adjustable Steel Prop)
Material / Steel Grades	Q235B, Q355B, Q420B, S355JR
Outer Diameter (OD)	400mm, 450mm, 500mm, 550mm, 600mm, 609mm, 630mm, 800mm, 900mm, 1000mm, 1200mm (custom diameters available)
Wall Thickness	10mm – 20mm (depending on diameter and load requirement)
Single Section Length	2m, 3m, 4m, 5m, 6m (custom lengths available)
Total Assembled Length	Up to 24m by bolting multiple sections together
End Types	Fixed end (flat plate with stiffener ribs), adjustable live end (telescopic with pin holes or screw jack)
Surface Finish	Black (as-welded), anti-rust primer + top coat (usually yellow or orange), or hot-dip galvanized
Connection	Bolted flanges with high-strength bolts; flanges welded to pipe ends
Stiffener Rings	Welded at regular intervals (e.g., every 1.5–2.0m) to prevent local buckling
Axial Load Capacity	Up to 5,000 kN (depending on diameter, wall thickness, and length)
Yield Strength	≥235 MPa (Q235B), ≥355 MPa (Q355B), ≥420 MPa (Q420B)
Tensile Strength	375–500 MPa (Q235B), 470–630 MPa (Q355B), 520–680 MPa (Q420B)
Adjustment Range (Live End)	±500mm (pin hole type) or up to ±300mm (screw jack type)
Tolerance – Length	±2mm (fixed sections), ±5mm (assembled total)
Standards Compliance	GB/T 14977, EN 10219, BS 5950, or custom engineering specifications
Reusability	Designed for multiple uses in temporary excavation support systems

Application description:

Widely used as temporary lateral support systems in deep excavation projects (subway stations, high-rise basements, underground parking, utility tunnels), foundation pits, and trench shoring. Also suitable for slope stabilization, bridge abutment reinforcement, and mining roof support. The adjustable length and high axial load capacity make it ideal for retaining wall bracing, soldier pile and lagging systems, and diaphragm wall reinforcement. Reusable design reduces project costs for urban construction and civil engineering works.

Production description

Steel plate or coil is rolled into pipe and welded longitudinally (or seamless pipe sourced). Pipe is cut to specified length. End flanges and stiffener rings are cut, machined, and welded onto the pipe body. The adjustable live end (telescopic tube with pin holes or screw mechanism) is fabricated separately. All welded components undergo dimensional inspection. The strut is then surface treated (primed, painted, or galvanized) and marked with length and load rating. Sections are packed for shipment.

Shipping Packaging

For export, steel strut sections are bundled with wooden separators, secured with steel straps, fitted with plastic end caps to protect flanges and threads, and packed on ISPM-15 pallets or in steel frames. Labels include diameter, length, grade, and quantity for safe sea freight.

Why Choose Us?

1.Factory Strength:Direct manufacturer with heavy fabrication workshops, automatic welding lines, and precision cutting equipment, ensuring consistent flange flatness, accurate stiffener ring spacing, and strong weld integrity for diameters 400–1200mm.

2.Quality Assurance:Strict control of axial load capacity, weld quality (100% visual and ultrasonic testing), dimensional accuracy (length ±2mm, flange perpendicularity ≤1mm), and surface coating thickness; compliant with GB/T 14977, EN 10219, BS 5950.

3.Certifications & Reports:Mill test certificates (MTC) for raw materials with each shipment; third-party inspections (SGS, BV) and weld NDT/load test reports available upon request.

4.Customization & Service:Wide diameter range (400–1200mm), wall thickness 10–20mm, single sections 2–6m, total assembled length up to 24m, end types (fixed/adjustable), surface finishes (primed, painted, galvanized), and fast lead times for temporary shoring projects.

5.Export Packaging:Wooden separators + plastic end caps (flange and thread protection) + steel strapping + ISPM-15 pallets/steel frames + clear labeling for safe sea freight and easy on-site identification.

FAQ

1. How to store steel struts before use to maintain performance?

Store on dry, level ground on timber sleepers or steel racks, keep bundles off the ground. Protect end flanges and adjustable screw threads from dirt, impact, and moisture. For painted or galvanized struts, avoid stacking heavy objects that could damage coating. For long-term storage, keep under cover and inspect for rust before installation.

2. Can steel struts be reused on multiple projects?

Yes. Steel struts are designed for repeated use in temporary excavation supports. After extraction, clean threads and flanges, inspect for weld cracks or bent flanges, apply anti-rust oil to adjustable parts, and store properly. Reuse can significantly lower project costs.

3. What is the maximum axial load capacity for your steel struts?

Load capacity depends on diameter, wall thickness, and unbraced length. For standard Q355B material, 609×16mm strut can support up to 3,000–4,000 kN. 800×20mm strut can support over 5,000 kN. Detailed load charts provided with each project design. Third-party load testing available upon request.

Customer Reviews

FACTORY APPEARANCE

HONORS AND QUALIFICATIONS

The company has sufficient inventory and complete varieties and specifications. Special materials and specifications are produced according to customer requirements and exported to Asia, the Middle East, Europe and other countries and regions. We have our own quality management systems: ISO9001, ISO14000, OHSAS18001 standards.

Electromagnetic Compatibility and Low Voltage Directive Certification

ABS Classification Society Certification Certificate

Quality Management System Certification Certificate 2

IATF 16949 Quality Management System Certification Certificate

API Q1 Quality System Certification Certificate

CCS Classification Society Certification Certificate

CUSTOMER VISIT

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