What is the minimum order quantity?

The minimum order quantity is 1 unit, allowing for flexible purchasing options.

How does the factory ensure quality?

We implement strict quality control at every stage, including 100% inspection before shipment and third-party inspection support.

310mm Width Road Barrier C Post with 2.75mm Wall for Medium Traffic Road

Name: 310mm Width Road Barrier C Post with 2.75mm Wall for Medium Traffic Road
Brand: Shandong Guanxian Dahai Composite Material Co., Ltd.
SKU: 2156135422

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

US$9.00-13.00

100 Pieces

Sample price:US$15.00/kg.Request sample

Product profile

Customization

Available

After-sales Service

Maintenance

Warranty

3 Years

Model NO.

Guardrail C Post

Certification

ISO9001, CE

Surface Treatment

Galvanized

Position

Road Side

Material

Steel

Tensile Strength

Minimum 495 MPa

R&D Capacity

Own Brand

Beams

W / Thrie Beam / Wave

Zinc Layer

550 G/M², 1100 G/M², 600 G/M²

Shape

U/C/H/Upn/Unp/Square/Z/Flange/Round/Sigma Section

Elongation

in 50mm (2 in), Minimum, 15 Percent

Yield Point

Minimum 355MPa

Post Thickness

3/4/4.3/4.5/5/5.5/6/7/9/10/20mm

Base Material

A572/Q345b/Ha350/Q235B/A36/S355jr/S275jra572/Q345b

Zinc Coating Weight

300/550/610/900/1100/1220 G/M2

Transport Package

Containers

Specification

Customized

Trademark

Guanzhoudahai

Origin

China

HS Code

7308900000

Production Capacity

150, 000 Mt/Year

Key features

High-Strength Steel Material: Manufactured from A572/Q345B steel with tensile strength min. 495 MPa for reliable support.

Multiple Shape Options: Available in C, H, U, round, square, and sigma sections to meet diverse design needs.

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

Customizable Colors: Available in zinc-silver, green, yellow, blue, and gray to match regional specifications.

OEM & Customization Service: Supports full customization from samples/designs with own-brand OEM capabilities.

3-Year Warranty Coverage: Comprehensive 3-year warranty with maintenance services for long-term peace of mind.

Direct Factory Advantage: Source manufacturer with 150,000 tons annual capacity and 100% pre-shipment inspection.

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: ≤0.25h 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.