What materials are used for the ground screws?

We use Q235 Carbon Structural Steel for general projects and Q345 Low-Alloy High-Strength Structural Steel for higher load-bearing requirements.

What is the minimum order quantity for samples?

The minimum order for samples is 3 sets.

What certifications does the product have?

The product is certified with GB, ISO, TUV, and CE standards.

Dwin Wholesale High Quality PV Pile Foundation Solar Ground Screws for House

Name: Dwin Wholesale High Quality PV Pile Foundation Solar Ground Screws for House
Brand: TIANJIN DWIN ENERGY CO., LTD.
SKU: 2130207772

Tianjin, ChinaTIANJIN DWIN ENERGY CO., LTD.

US$8.00-12.00

1,000 Pieces

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Certification

GB, ISO, TUV, CE

Application

Commercial

Material

Metal

Type

Ground Screw

Profile

Tied with Steel Strips

Design

Free

Row

Single/Double

Foundation

Anchor Bolt+Concrete Base

Transport Package

Wooden Boxes or Pallets

Specification

custom

Trademark

Dwin

Origin

Tianjin China

Key features

High Load Capacity: Supports up to 25kN with options for Q235 or Q345 steel materials.

Corrosion Resistant: Hot-dip galvanized or aluminum-magnesium coating for long-lasting durability.

Easy Installation: Spiral design allows quick anchoring without concrete pouring or excavation.

Flexible Customization: Customizable design, row configuration, and profile tied with steel strips.

Multi-Industry Use: Ideal for solar PV stations, wind turbines, residential, and temporary structures.

Certified Quality: ISO9001, ISO14001, ISO45001 certified with TUV, CE, and GB standards.

15-Year Warranty: Comprehensive 15-year warranty with free replacement for non-human damage.

Fast Sample Delivery: Sample orders supported with shipment within 7 days and fee deduction.

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: ≤0.64hTerms 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).