Engineered asymmetrical transition panels providing smooth stiffness graduation between W-Beam and Thrie-Beam systems. Fully compliant with AASHTO M180 Class A/B, ASTM A123, and EN 1317 standards.
Shandong Sinoguardrail Traffic Facilities Co., Ltd. manufactures precision-engineered W-Beam to Thrie-Beam Transition Guardrails conforming strictly to international crashworthiness standards (AASHTO M180 / EN 1317). Transition sections are critical safety components installed where standard semi-rigid W-Beam Guardrails connect to higher-containment Thrie-Beam Barriers or bridge approach structures.
Formed from high-tensile structural steel (SS355JR, Q355B, Q235B, ASTM A36) with reinforced material thickness (up to 4.0 mm), our transition beams eliminate vehicle pocketing, snagging, and vaulting during angled collisions. Protected by continuous hot-dip galvanization delivering zinc coating weights from 550 g/m² to 1100 g/m² (approx. 80µm to 160µm), they ensure over 30 years of corrosion-free performance in harsh desert, coastal, and tropical highway environments across the Middle East, Southeast Asia, and South America.
| Parameter | Standard Engineering Specification |
|---|---|
| Product Profile | Asymmetrical Transition Guardrail (2-Wave to 3-Wave Profile Transition) |
| Material Grades | SS355JR / Q355B (ASTM A572 Grade 50) & Q235B (ASTM A36 / SS400) |
| Standard Dimensions |
• Total Length: 4310 mm (Effective Length: 4130 mm / 3810 mm) or 2000 mm / 3127 mm • Profile Width: Transitions from 310 mm (W-Beam side) to 510 mm (Thrie-Beam side) • Wave Depth: 82 mm |
| Steel Thickness | 2.8 mm, 3.0 mm, 3.5 mm, 4.0 mm (Heavy-duty reinforced) |
| Zinc Coating Mass | 550 g/m² (Class A, 78µm) or Heavy-Duty 1100 g/m² (Class B, 150µm) according to AASHTO M180 / ASTM A123 |
| Matching Post System | Guardrail H Post (W150 × 13.5 × 1830 mm / 1980 mm), Sigma Post, U Post, C Post, Round Post |
| Matching Spacers & Hardware | H Spacers (W150×13.5×360mm & 554mm), Thrie-Beam Backup Plates (300×310×2.8mm), Flat Plate Washers (75×44×4.0mm), M16×35 / M16×50 Fasteners |
| Applicable Standards | AASHTO M180, ASTM A123, EN 1317, ISO 1461, GB/T 31439 |
Sinoguardrail provides complete bill-of-quantities (BOQ) manufacturing for international highway engineering tenders:
China's Leading Certified Manufacturer: The only Chinese manufacturer holding authentic MASH TL4 crash test reports (100km/h). Fully certified under ISO 9001, SGS, CE, and Bureau Veritas (BV).
25+ Years Global Export Experience: Proven 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 automated punching ensures exact slot matching on site; tensile testing and magnetic/gravimetric zinc thickness verification guarantee heavy-duty corrosion protection.
Full Drawing Customization & Fast Dispatch: Tooling and mass production capability based on project CAD drawings to match road-to-bridge structural transitions precisely.
Contact our highway safety engineering team today for factory-direct container pricing, technical CAD drawing confirmation, 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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