Engineered structural transition sections connecting W-Beam to Thrie-Beam and Bridge Parapets. Fully compliant with AASHTO M180, ASTM A123, and EN 1317 standards.
Shandong Sinoguardrail Traffic Facilities Co., Ltd. specializes in precision-engineered Customized Guardrail Transition Beams. Transition sections are critical engineering links in highway safety networks, designed to bridge stiffness variations between standard flexible semi-rigid W-Beam Guardrails and rigid structures such as Thrie-Beam Barriers, bridge concrete piers, and abutments.
Fabricated from high-tensile structural steel (Q235B, Q345B, SS355JR, ASTM A36) using high-precision CNC stamping, our transition beams eliminate vehicle pocketing or snagging during high-speed impacts. Protected by hot-dip galvanizing with zinc coating weights from 550 g/m² to 1100 g/m² (80µm - 160µm), they ensure 30+ years of maintenance-free service across severe desert, coastal, and tropical highway environments.
| Parameter | Standard Engineering Specification |
|---|---|
| Product Profile | Asymmetric Transition Beam (W-Beam to Thrie-Beam / Bridge Transition Section) |
| Standard Dimensions |
• Length: 2000 mm / 3127 mm / 4310 mm (Customized to project drawings) • Profile Transition: 310 mm (W-Beam side) to 506 mm / 510 mm (Thrie-Beam side) • Wave Depth: 82 mm |
| Steel Thickness | 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm (Reinforced for higher stiffness) |
| Material Grades | Q235B (ASTM A36 / SS400), Q345B (ASTM A572 Grade 50 / S355JR) |
| Zinc Coating Weight | 550 g/m² (Class A, 78µm) or Heavy-Duty 1100 g/m² (Class B, 150µm) according to AASHTO M180 / ASTM A123 |
| Matching Post Systems | Guardrail H Post (W150 × 13.5), Sigma Post, U Post, C Post, Round Post |
| Matching Hardware | M16 Splicing Bolts, Thrie-Beam Backup Plates, Flat Plate Washers (75×44×4.0 mm) |
| Applicable Standards | AASHTO M180, ASTM A123, EN 1317, ISO 1461, GB/T 31439 |
Sinoguardrail supplies matched structural barrier packages tailored for international EPC engineering contracts:
China's Leading Certified Manufacturer: The only Chinese manufacturer holding authentic MASH TL4 crash test reports (100km/h). Fully certified under ISO, SGS, CE, and Bureau Veritas (BV).
25+ Years Global Export Experience: Proven track record supplying major highway EPC contractors across Saudi Arabia, UAE, Philippines, Indonesia, Chile, and Brazil with a 98% client reorder rate.
15-Stage QC Strict Quality Control: CNC stamping and hole punching ensure zero dimensional error on site; magnetic and gravimetric zinc thickness testing ensures heavy corrosion resistance.
Full Drawing Customization: Rapid tooling and production based on custom CAD drawings to meet unique highway-bridge transition angles and local Ministry of Transport (MOT) requirements.
Contact our road safety engineering team today for customized drawing confirmation, factory-direct container pricing, and instant international shipping quotations.
SinoGuardrail supplies highway guardrails and roller barrier systems for contractors, distributors and infrastructure project buyers in Southeast Asia, the Middle East, Africa and South America.
Contact: Mr.Zhang
Phone: +86 13306356181
Email: [email protected]
Add: Guanxian Economic Development Zone, Liaocheng City, Shandong Province, China
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