What is your annual production capacity?

Our facility has an annual production capacity of 150,000 tons with fully automated lines.

Do you offer OEM and ODM services?

Yes, we provide complete OEM and ODM services, customizing products strictly according to customer standards.

What quality inspection methods do you use?

We perform 100% inspection including visual checks, function tests, and non-destructive testing like PT, MT, UT, and RT.

Quality Roadway / Highway Galvanized Guardrail Round Post

Name: Quality Roadway / Highway Galvanized Guardrail Round Post
Brand: Shandong Guanxian Dahai Composite Material Co., Ltd.
SKU: 2299757795

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

US$10.00-15.00

100 Pieces

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Maintenance

Warranty

3 Years

Model NO.

Guardrail Round 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

Customizable Dimensions: Length, thickness, and post shapes can be customized according to customer requirements and drawings.

Multiple Coating Options: Available in Zinc-Silver, Green, Yellow, Blue, and Gray with various zinc coating thicknesses.

Comprehensive Certifications: Certified by AASHTO, EN 1317, AS/NZS, ISO9001, CE, SGS, and BV for global compliance.

High Production Capacity: Annual capacity of 150,000 tons with fully automated production lines for large orders.

OEM/ODM Services: Full customization from samples and designs with flexible customization options available.

Strict Quality Control: 100% inspection before shipment including dimension, visual, and non-destructive testing.

Durable Corrosion Resistance: Hot-dip galvanized coating ensures long life, high intensity, and excellent impact resistance.

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

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.