Road & Traffic Safety Hardware — Built to FHWA Standards
FHWA guardrail specifications call for 7/8-inch high-strength bolts with resin anchorage, and Florida DOT updated its guardrail procurement standard in 2026. A W-beam guardrail's containment is designed on the assumption that every connector is present and sound: crash investigations on sections where rails ripped open typically find missing and corroded splice bolts well above tolerance — however thick the rail, a guardrail with rusted-out bolts is no guardrail at all. In de-icing-salt environments (C4), ordinary galvanized bolts corrode severely within 3–5 years; our hot-dip galvanized + sealer duplex system significantly extends the replacement cycle. We supply a complete package: 8.8-grade splice bolts, anti-theft fasteners, EN 124 load-rated manhole hardware and sign-post fixings — to GB/T 31439, JTG D81-2017, MASH and EN 1317.
SOLUTION COMPARISON
Guardrail Fastening Options Compared
Crash performance comes from rail, posts and connection bolts working as a system.
| Option | Best for | Crash performance | Theft resistance | Cost | Recommendation |
|---|---|---|---|---|---|
| 8.8-grade splice bolts + locking nuts ⭐ Recommended | Standard W-beam sections, national & provincial highways | High: standard spacing and torque preserve rail guidance | Low | Medium: common tools | Standard configuration per GB/T 31439 |
| Anti-theft bolts (penta / socket+pin) TOP PICK | High-theft sections, peri-urban roads | High: as above | Medium-low | High: requires proprietary tools | Standard where bolt theft is recurrent |
| 10.9-grade high-strength bolts | Bridge rails, high-containment barriers | Highest: high preload | Medium | Medium | High-containment and bridge-transition sections |
De-icing salt / coastal C4-C5: upgrade any option to hot-dip galvanized + sealer or Dacromet. Plain electro-galvanized fasteners are not acceptable.
SELECTION DECISION
3-Step Selection Flow
1. Fix the facility type — barrier / cover / signage / speed control 2. Set environment & theft class — de-icing salt or coastal → coating upgrade; high-theft → anti-theft fasteners 3. Fix the standard system — GB, MASH or EN 1317
01
Path A · Highway Guardrail
For: national/provincial highways, rural W-beam
- 8.8-grade splice bolts + locking nuts + spacer/block connectors, HDG ≥65 µm. Configured per GB/T 31439 and JTG D81; 5% spare hardware ships with the order.
- GB-standard configuration, HDG ≥65µm corrosion protection, 5% spares included
Path A · Highway GuardrailSolutions →
02
Path B · Municipal Streetscape
For: urban manholes, gully gratings, bollards, speed control
- EN 124 D400 manhole hardware + anti-settlement gaskets + bollard flange bases + sign-post clamps. Urban priorities: anti-theft and anti-rattle.
- D400 load-rated, anti-settlement gaskets, locking hinges, anti-rattle design
Path B · Municipal StreetscapeSolutions →
03
Path C · Export, MASH / EN Markets
For: North American and European guardrail & road-safety projects
- MASH-corresponding hardware + EN 1317-corresponding hardware + full English documentation. Export sets configured per destination crash-test reports and coating classes.
- MASH/EN 1317 corresponding, full English documentation, per-destination coating classes
Path C · Export, MASH / EN MarketsSolutions →
ENGINEERING CASES
Typical Configuration Reference
Based on GB/T 31439, JTG D81-2017, EN 124 and standard road-safety practice. For reference only.
| Item | Typical Specs / Requirements | Design Basis / Source |
|---|---|---|
| Guardrail splice bolts | 8.8 grade M16, hot-dip galvanized + sealer (C4) | GB/T 31439, GB/T 18226 |
| Anti-theft fasteners | Penta-head / socket-with-pin | Road-safety practice |
| Manhole hardware | EN 124 D400, anti-settlement gasket, locking hinge | EN 124 |
| Gully gratings | Ductile iron, load classes, anti-rattle seats | EN 124 |
| Bollards | HDG steel pipe, flange base with chemical anchors | JTG D81 |
| Sign-post clamps | 304 stainless / HDG, wind-vibration locking | GB 50009 wind loads |
Road-safety installations must be built and accepted per JTG D81 and project design documents.
Final selection must be verified per JTG D81 and project-specific design documents.
Free BOM Service
Send the road-section list or facility drawings — we'll organize a free hardware BOM: bolts, anti-theft fasteners, manhole hardware and sign fixings with specifications and quantities.
Free BOM Preparation →Related Hardware
Combine in one RFQ for bundled pricing.
Can be included in the inquiry list to enjoy combined procurement discounts.
TECHNICAL BASIS
Standards & References
Parameters compiled from public standards; consult a professional engineer for project design.
Road safety
- GB/T 31439 — Corrugated steel guardrail
Applicable Scope:Rails & connectors - JTG D81-2017 — Highway traffic safety facility design
Applicable Scope:Layout & containment levels - AASHTO MASH / FHWA — US crash & fastening criteria
Applicable Scope:North American exports - EN 1317 — European road restraint systems
Applicable Scope:European exports - EN 124 — Manhole & gully load classes
Applicable Scope:D400 selection
Fasteners & corrosion
- GB/T 3098.1 / ISO 898-1 — Fastener mechanical properties
Applicable Scope:8.8/10.9 grades - GB/T 18226 / ISO 1461 — Corrosion protection for road steelwork
Applicable Scope:HDZ + sealer
Parameters compiled from public standards; consult a professional engineer for project design.
FAQ
FAQ
Explore Our Supply Chain Capabilities
From factory QC to global logistics, one team, end to end
Explore Capabilities →About Yaxiio
Yaxiio is an industrial hardware sourcing company based in China. We help global buyers find technically compliant, cost-controlled hardware suppliers — from drawing review and material matching to factory audits and pre-shipment inspection. In road safety, we understand crash-critical connections, de-icing-salt corrosion and anti-theft detailing. Our team works to GB/T 31439, JTG D81, MASH and EN 1317, and matches road-safety hardware to your road classes and destination markets.