What is the MOQ and sample order policy?

MOQ 1pc, sample orders are always welcomed for the detail and quality check and test. Mixed samples are acceptable.

Which countries do you have distributors in?

We have a Worldwide sales network, and successfully expand in Asia, Europe, South America, Middle East market, and all of these has witnessed the entrepreneurship spirit of Dafeng group.

Can I use my private packaging and logo on your product?

Yes, we can handle customized/OEM/ODM service.

I have 3D drawings, can your company produce?

Yes, of course. We have a professional technician team for R&D. You can tell us your detail requirements, or send us you design drawing, then we make samples for details check and confirm.

What are your new products and best sellers?

The tunnel fan is our new product this year. The normal PVC flexible duct is hot selling in every country.

Durable PVC Air Duct for Tunnel Construction Ventilation Systems

Name: Durable PVC Air Duct for Tunnel Construction Ventilation Systems
Brand: Shandong Hanqi Industrial Co., Ltd.
SKU: 2163622132

Shandong, ChinaShandong Hanqi Industrial Co., Ltd.

US$5.00

1-499 Meters

US$1.00

500+ Meters

Sample price:US$6.00/meter.Request sample

Product profile

Customization

Available

Material

PVC

Usage

for Air Conditioner

Application

Petrochemical

Shape

Round

Performance

Temperature

Certification

ISO, CE, CCC

Diameter

100~1500mm or Customized

Environmental Temperature

-20~100℃

Compressive Strength

1000~2000PA

Length

10m or Customized

Weight

470~650GSM

Thickness

0.4~0.6mm

Color

Yellow/Orange/Green/Black/Customized

Feature

Anti-Static/Waterproof/Impact Resistant

Connection Way

Zipper or Eyelet

Technical Support

Provide Online Support Upon Customer Request

Using

Mining/Tunnel/Indoor Ventilation/Parking Lot

Steel Ring Material

Spring Manganese Steel or Cold Drawn Steel

Suspension Clasp Spacing

500mm or Customized

Storage

Freely Bent, Expanded and Contracted

Installation

Easy to Connect and Disassemble by Zipper or Eyele

Transport Package

Export Wooden Package

Specification

According to the order

Trademark

HANQI

Origin

Shandong, China

Production Capacity

20000 Pieces/Year

Key features

Customizable Dimensions: Diameter 100-1500mm or customized, Length 10m or customized, Thickness 0.4-0.6mm or customized.

Diverse Color Options: Available in Yellow, Orange, Green, Black, or fully customized to customer requirements.

High Compressive Strength: Features compressive strength between 1000-2000PA with an elasticity index up to 5000PA.

Multi-Functional Features: Anti-static, waterproof, impact resistant, flame retardant, and explosion-proof capabilities.

Flexible Installation: Easy to connect and disassemble using zipper or eyelet connections; freely bent and stored.

Durable Material Construction: Made of PVC with wear-resistant biaxial polyester high-strength yarn and spring manganese steel rings.

Global Certification: Certified with ISO9001:2015, CB, CE, and Explosion Proof certificates.

Company profile

High Repeat Buyers ChoiceCustomization from Samples3D Software DesignProduct Certification

Shandong Hanqi Industrial Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 8 Years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤10.03h

AI-Powered supplier vetting

SummaryShandong Hanqi Industrial Co., Ltd. is identified as a combined industrial company providing design, development, manufacturing, installation, sales, and after-sales services. It reports two production lines, a broad set of manufacturing equipment, inventory capability, written finished-product inspection procedures, and peak- and off-season lead times within 15 working days. The supplier supports extensive customization and ODM services, has introduced new products within the past year, and reports OEM service for well-known brands. However, it reports no supplier-management-system certifications, fewer than five quality-control staff, no valid manufacturing-capacity contract with related subcontractors, no overseas agents, branches, warehouses, or showrooms, and no offline trade-show participation. The provided information does not establish sufficient evidence to assess financial credibility or specific customer cases.

Supplier typeThe supplier is classified as a combined company and describes itself as an industrial enterprise integrating design, development, manufacturing, installation, sales, and after-sales services. It also reports its own factories, a research institute, and strategic cooperation with manufacturers in China.

CertificationsThe supplier-management-system certification field is explicitly recorded as NIL. This is direct evidence that no such certification is reported in the provided information.

R&D capabilityThe supplier reports two years of total R&D engineer experience, a research institute, new products within the past year, and ODM services. These indicators support active product development, although no SDK is available and the depth of the R&D organization is limited in the provided data.

Production capacityThe supplier operates two production lines and lists laser cutting, shearing, rolling, drilling, shot blasting, painting, punching, and welding equipment. It reports inventory capability, written production-service procedures, and lead times within 15 working days in both peak and off seasons; however, it has no valid contract with related subcontractors for manufacturing capacity.

Customization capabilityThe supplier explicitly offers customization from samples and designs, full, minor, and flexible customization, and also provides ODM services. The same customization range is reported across both R&D and design-capability records.

Product Q&A

Q:Are you a factory or trading company?

We are a leading manufacturer of all kinds of high quality flexible ducts and portable ventilators with more than 20 years experience and won hundreds of cooperated customers at home and abroad.

Q:Why should I choose your company?

We seldom advertise but focus on serving our customers and produce better products, and mainly rely on word-of-mouth publicity from customers.

Q:What is the difference between your company and others?

We are a professional manufacturer with more than 20 years, small MOQ but good service can best meet our customers need.

Q:Do you have all certifications?

We have received ISO9001:2015 quality management system certificate, CB, CE, Explosion proof certificate etc.

Q:How can I get a price?

An inquiry online and TM chat available, we will reply within 4hours. If you are urgent you are welcome to call s directly.