How does the manufacturer ensure product quality?

We implement strict end-to-end quality control, including raw material inspection, in-process monitoring, and 100% finished product inspection (visual and functional). Third-party inspections are also supported.

What is the production capacity and delivery reliability?

The factory has an annual production capacity of 150,000 tons. Over 89% of orders last year were delivered ahead of schedule, ensuring fast and reliable delivery for global partners.

Hot DIP Galvanized W Beam Highway Guardrail Traffic Crash Barrier

Name: Hot DIP Galvanized W Beam Highway Guardrail Traffic Crash Barrier
Brand: Shandong Guanxian Dahai Composite Material Co., Ltd.
SKU: 2284172415

Shandong, ChinaShandong Guanxian Dahai Composite Material Co., Ltd.

US$10.00-40.00

100 Meters

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Maintenance

Warranty

3 Years

Model NO.

W Beam Guardrail

Certification

ISO9001, CE

Surface Treatment

Galvanized

Position

Road Side

Material

Steel

Length

3200/3810/4000/4130/4300/4320mm

Width

306/310/312/380mm

Thickness

2.5/2.75/2.85/3.0/3.1/3.15/3.5/3.75/3.85/4.0/4.15

Height

80/82/83/85mm

Color

Zinc-Silver, Green, Yellow, Blue, Gray

Transport Package

Containers

Specification

4320*310*85*3.0

Trademark

Guanzhoudahai

Origin

China

HS Code

7308900000

Key features

Multi-Color Customization: Available in Zinc-Silver, Green, Yellow, Blue, and Gray to match specific project requirements.

Flexible Dimension Options: Customizable lengths (3200-4320mm), widths, heights, and thicknesses for diverse installation needs.

High-Strength Steel Material: Manufactured from A572, Q345B, S355JR, etc., with minimum tensile strength of 495 MPa.

Global Standard Compliance: Compliant with AASHTO M180, EN1317, RAL RG620, and AS NZS 3845-1999 standards.

OEM & Customization Service: Supports full customization from samples/designs, including minor and flexible adjustments.

3-Year Warranty Coverage: Provides a comprehensive 3-year warranty for all mechanical defects and material issues.

Direct Source Manufacturer: Factory with 150,000 tons annual capacity, ensuring competitive pricing and stable supply.

Company profile

100% Finished Products InspectionCustomization from SamplesNational Award receivedProduct Certification

Shandong Guanxian Dahai Composite Material Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 year CertifiedNearest Port: Qingdao portAverage Response Time: ≤0.62h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier operates in metal products, steel processing, traffic and public-administration signage, traffic-safety equipment, metal structures, and high-performance fibers and composites. It holds ISO9001:2015 and CE certifications, reports documented procedures for service assessment, corrective actions, and complaint handling, and has six to ten quality-control staff. The supplier demonstrates customization capability and reports new products within the past year, but does not provide ODM services, SDKs, overseas warehouses, showrooms, agents, or branches. Financial information is limited to year labels without substantive performance figures, so financial credibility cannot be determined. No Fortune 500 cooperation or well-known-brand OEM experience is reported. Production scale, capacity, and customer references are not sufficiently evidenced.

Supplier typeThe supplier is a manufacturer and seller covering metal structures, metal materials and products, steel rolling, traffic and public-administration signs, traffic-safety equipment, mechanical and electrical equipment, and high-performance fibers and composite materials. The stated scope also includes goods import and export, indicating both manufacturing and trading activities.

CertificationsThe supplier reports an ISO9001:2015 management-system certificate and CE product compliance certification. These are explicit certifications relevant to quality management and product conformity, although the supplied information does not specify their scope or validity dates.

After-Sales capabilityThe supplier has written and followed procedures for service-capability assessment, corrective and preventive actions, and customer complaint handling. However, it has no overseas warehouse, showroom, agent, or branch, and reports zero countries with overseas services, which limits documented overseas service coverage.

R&D capabilityThe supplier reports two years of total R&D engineer experience, one national science and technology progress award, and new products within the past year. It does not provide an SDK and does not offer ODM services, so the evidence supports some innovation activity but not broad software or ODM capability.

Production capacityThe supplier lists multiple manufacturing activities, including metal products, steel rolling, signage, traffic-safety equipment, metal structures, and composite materials, and reports six to ten quality-control staff. Lead times are stated as within 15 working days in both peak and off-season, but production capacity, equipment, output, and facility scale are not provided.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization. This directly supports a broad product-customization capability, although ODM service is specifically unavailable.

Product Q&A

Q:What customization options are available for the guardrail?

We offer full customization from samples or designs, including minor and flexible adjustments. Customizable attributes include length (3200-4320mm), width, height, thickness, and color (Zinc-Silver, Green, Yellow, Blue, Gray).

Q:What materials and standards are used for the W-beam guardrail?

Made from high-strength steel grades like A572, Q345B, and S355JR with a minimum tensile strength of 495 MPa. It complies with international standards including AASHTO M180, EN1317, RAL RG620, and AS NZS 3845-1999.

Q:What is the warranty period for this product?

We provide a 3-year warranty for all our highway guardrail products, covering mechanical defects and ensuring long-term reliability.

Q:What is the minimum order quantity (MOQ)?

The minimum order quantity is 1 unit, allowing for flexible purchasing for both large-scale projects and smaller maintenance needs.

Q:What are the payment terms and lead times?

Payment terms include LC, T/T, D/P, PayPal, Western Union, and small-amount payments. The average lead time is within 15 workdays for both peak and off-peak seasons.