What is your quality guarantee and after-sales service policy?

We provide a 3-year warranty and a comprehensive after-sales service system. In case of quality issues, we take full responsibility and provide replacement at no additional cost. We also offer technical guidance and installation assistance.

What types of posts are available for the guardrail system?

We supply a full range of posts including U, H, Sigma, C, Z, round, and square profiles. Specific sizes are available for each type, and custom sizes can be requested.

How is the product packaged for shipping?

Guardrail panels are stacked neatly and secured with steel straps, with wooden blocks or rubber pads to prevent scratches. Posts are bundled and sorted by length. Small accessories are packed in woven bags or boxes with clear markings.

Sigma Section Post

Name: Galvanized Highway Guardrail and Z/U/C/Sigma Section Post
Brand: Shandong Guanxian Dahai Composite Material Co., Ltd.
SKU: 2288710475

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

US$9.00-16.00

100 Pieces

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Maintenance

Warranty

3 Years

Model NO.

Guardrail Z Post

Certification

ASTM, ISO9001, RoHS, CE

Surface Treatment

Galvanized

Position

Road Side

Material

Steel

Guardrail Standard

Aashto M180, En1317, Ral RG620, as Nzs 3845-1999

Guardrail Beam Style

H, C, U, Round, Square, Sigma

Zinc Coating Thickness

100/350/550/610/1100/1200G/M2; 50/77/85/140/155um

Length

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

Width

306/310/312/380mm

Height

80/82/83/85mm

Thickness

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

Surface-Treatment

Hot Dipped Galvanized or Plastic Sprayed Coating

Color

Zinc Layer 550G/M2, 1100G/M2, 600G/M2 Beams

Tensile Strength

Minimum 495MPa

Guardrail Material Steel Grade

A572/Q345b/Ha350/Q235B/A36/S355jr/S275jra572/Q355

R&D Capacity

Own Brand

Business Type

Soure Manufacturer / Factory, OEM

Transport Package

25 PCS Per Bundle

Specification

4320*310*85mm or as customer request

Trademark

Guanzhoudahai

Origin

China

HS Code

7308900000

Production Capacity

200000prices/Year

Key features

Comprehensive Customization: Full customization available for sizes, designs, and samples based on customer requirements.

Multiple Standard Compliance: Meets GB, AASHTO, EN, RAL, and AS/NZS international highway safety standards.

High Production Capacity: Annual capacity up to 150,000 tons with fully automated production lines.

Advanced Galvanizing Technology: Hot-dip galvanizing with adjustable thickness from 50 to 1200g/m2 for superior corrosion resistance.

Strict Quality Control: 100% product inspection before shipment with third-party inspection support.

OEM/ODM Services: Full OEM/ODM support including customization from designs and samples.

Fast Delivery Performance: Over 89% of orders delivered ahead of schedule with lead time within 15 workdays.

Comprehensive After-Sales Support: Includes technical guidance, installation assistance, and free replacement for quality issues.

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: ≤0.75h 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 and posts?

We offer full customization including sizes, designs, and standards. Options include customization from samples, designs, minor adjustments, and flexible customization to meet specific project requirements.

Q:What are the available surface treatment and coating options?

Products are available with Hot Dipped Galvanized or Plastic Sprayed Coating. Zinc coating thickness ranges from 50 to 1200 g/m2, and colors include Zinc-Silver, Green, Yellow, Blue, and Gray.

Q:Which international standards do your guardrails comply with?

Our products comply with multiple global standards including ASTM, AASHTO M180 (USA), EN 1317 (Europe), RAL RG620 (Germany), and AS NZS 3845-1999 (Australia/New Zealand).

Q:What is the production capacity and delivery time?

We have an annual production capacity of up to 150,000 tons. The average lead time is within 15 workdays for both peak and off-peak seasons, with over 89% of orders delivered ahead of schedule.

Q:Do you provide OEM and ODM services?

Yes, we offer complete OEM/ODM services. We customize products strictly according to customer requirements and standards, providing tailored and practical solutions based on our extensive international trade experience.