What is the minimum order quantity for samples?

The minimum order quantity for samples is 3 sets.

How long is the delivery time for bulk orders?

Delivery time is 3-45 days depending on inventory and production schedule.

Dwin-CE No Rail Metal Roof Solar Panel Mounting System

Name: Dwin-CE No Rail Metal Roof Solar Panel Mounting System
Brand: TIANJIN DWIN ENERGY CO., LTD.
SKU: 2129189922

Tianjin, ChinaTIANJIN DWIN ENERGY CO., LTD.

US$0.40-0.61

100 Feet

Sample price:US$0.01/piece.Request sample

Product profile

Customization

Available

After-sales Service

20-25years

Warranty

20-25years

Certification

GB, ISO, TUV, CE

Application

Home

Material

Zinc-Aluminum-Magnesium

Type

Solar Rail

Coating

Zinc-Aluminum-Magnesium

Grade

S250/S350, etc.

Production Cycle

15-30 Days

Installation Type

Roof Mounting

Export Countries

Global

Sample

Free

Design

Free

Transport Package

Bundled Straps, Wooden Boxes, or Wooden Pallets

Specification

custom

Trademark

Dwin

Origin

Tianjin China

Key features

High Corrosion Resistance: Zinc-Aluminum-Magnesium coating resists salt spray, acid rain, and harsh climates for over 25 years.

Strong Structural Stability: Carbon steel with anodic oxidation ensures high yield/tensile strength against wind, snow, and earthquakes.

OEM/ODM Customization: Accepts custom coating, grade (S250/S350), and design. Free samples and design services available.

Large Inventory & Capacity: 10,000 tons spot inventory and 1,000,000 tons annual capacity ensure fast delivery within 3-45 days.

Certified Quality Control: ISO9001, ISO14001, ISO45001 certified. Provides third-party inspection and wind/snow load reports.

Company profile

Importers and ExportersODM ServicesQuality AssuranceR&D Capabilities

TIANJIN DWIN ENERGY CO., LTD.

Tianjin, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2025-10-01Nearest Port: TianJin ChinaAverage Response Time: ≤0.75hTerms of Payment: T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, CIF, DDP, CIP, DAP

AI-Powered supplier vetting

SummaryThe supplier operates in metal materials, metal structures, special equipment, building materials, and related product categories. It reports ISO9001, ISO14001, and ISO45001 certifications, a 45,000-square-meter production base, automated steel, laser-cutting, and CNC welding lines, and OEM/ODM capabilities. Customization from samples is available, and exports represent 51%–70% of total sales. However, the supplier has no written service procedures, approved supplier list, complaint-handling records, overseas warehouse, overseas showroom, overseas agents or branches, or offline trade-show experience. No new products were reported in the past year, no SDK is available, and the provided financial records show zero values for reported revenue, costs, profits, margins, and current ratios; these figures materially limit financial assessment.

Supplier typeThe supplier is a manufacturer and service provider covering special steel materials, metal structures, metal products, springs, special equipment, lightweight building materials, cement products, bearings, gears, and related categories. Its stated OEM and ODM services indicate it can support both branded manufacturing and original design manufacturing.

CertificationsThe company states that it holds ISO9001, ISO14001, and ISO45001 international management system certifications and links these systems to full-process quality control from design through production. This is explicit certification evidence supporting the field.

After-Sales capabilityThe supplier has quality assurance, but it reports no written procedures or records for service assessment, corrective and preventive actions, or customer complaint handling. It also has no overseas warehouse, showroom, agents or branches, and reports zero countries offering overseas services, although it accepts several quotation and payment terms and states peak- and off-season lead times within 15 workdays.

Financial creditThe provided financial information reports zero operating revenue, operating costs, gross profit, operating profit, gross margins, and current ratios across the stated periods. Because these figures provide no positive operating or liquidity evidence, financial credibility is materially deficient based on the submitted data.

Production capacityThe supplier reports a 45,000-square-meter production base with automated section-steel, laser-cutting, and CNC welding lines, plus roll forming, plasma hole punching, punching, metal band sawing, and sawing equipment. It also reports one quality assurance and quality control inspector and exports representing 51%–70% of total sales, supporting substantial manufacturing capability.

Customization capabilityThe supplier explicitly provides customization from samples and offers ODM services, indicating it can adapt production to customer-provided designs or samples. Its OEM service for well-known brands further supports capability to manufacture to customer or brand requirements.

Product Q&A

Q:What is the difference between galvanized aluminum magnesium steel and ordinary galvanized steel?

Aluminum magnesium coating significantly improves corrosion resistance, especially suitable for high salt spray and acid rain areas, with a lifespan extension of more than 50%.

Q:Does the bracket require additional anti-corrosion treatment?

No need! The coating and passivation treatment have been completed before leaving the factory, and it can be used directly.

Q:Can you provide a load-bearing calculation report?

We can provide third-party inspection reports along with the goods and support customized wind/snow load analysis for the project.

Q:Do you accept sample orders?

Support! 3 sets minimum order, shipped within 7 days, sample fee can be deducted from bulk order.

Q:What are the payment methods and warranty period?

Accept TT/LC, with a 15 year warranty (free replacement for non-human damage).