Can you guys come to our jobsite do the installation?

Sure, We can offer installation service and we have went to Thailand, Maldives to do installation last year.

Is any guarantee I can get from you?

Our products will have 3 years guarantee, all fitting can be changed for free within 3 years.

Can you offer other products for our house?

Yes, We are pleased to offer one stop solution for your house. you just send us your house plan, we will check if any other thing we can offer.

If I have other products in China, Can you help me collect the goods to one container?

No problem, we will help you collect all of your goods from your other supplier and arrange shipment for you, it will saving time and money for you.You handle over everything to us. Professional Double team will make sure your order safe and cost / time saving . You make the choice, we make it the best.

Spiral Stair Center Column Metal Steps with Vertical/Horizontal Round Tube Railing

Name: Spiral Stair Center Column Metal Steps with Vertical/Horizontal Round Tube Railing
Brand: Double Building Materials Co., Ltd.
SKU: 1951122325

Guangdong, ChinaDouble Building Materials Co., Ltd.

US$4,750.00

1-9 Sets

US$3,560.00

10-19 Sets

US$2,700.00

20+ Sets

Product profile

Customization

Available

After-sales Service

Yes

Warranty

Yes

Model NO.

DB-S

Structure

Beam+Balustrade+Tread

Type

Ordinary Stairs

Material

Stainless Steel

Usage

Indoor, Outdoor, Shopping Mart

Stair Type

Spiral Stair

Assemble

Easy Assemble

Beam Material

A3 Steel / Stainless Steel

Balustrade Material

Tempered Glass / Stainless Steel

Step Material

Steel / Solid Wood/ Laminated Tempered Glass

Transport Package

Plywood Package

Specification

Customized Based On Jobsite

Trademark

Double Building

Origin

China

HS Code

7308900000

Production Capacity

800

Key features

Full Customization Options: Customizable from samples, designs, or full customization with flexible options.

3-Year Warranty Coverage: Includes free replacement of all fittings within the 3-year guarantee period.

Easy Self-Installation: Products designed for easy assembly without welding, ensuring hassle-free installation.

Global Project Experience: Completed projects in over 40 countries with knowledge of local building codes.

Professional Design Support: Dedicated design team provides detailed solutions based on your house plans.

Comprehensive Installation Service: On-site installation service available in locations like Thailand and Maldives.

One-Stop House Solution: Offers complete building material solutions including stairs, railings, and more.

Consolidated Shipping Support: Helps collect goods from other suppliers into one container to save time and cost.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceIn-stock CapacityLow MOQ

Double Building Materials Co., Ltd.

Guangdong, 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: 10 years CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤6.43h

AI-Powered supplier vetting

SummaryThe supplier is a limited company with affiliated companies, 18 employees, six production lines, and a broad product range spanning staircases, railings, doors, cabinets, bathroom products, windows, and building materials. It reports substantial stated production capacity, exports 71%–90% of sales, serves multiple international markets, and has seven years of export experience. R&D evidence is positive: new products were developed within the past year and ODM services are available, alongside extensive customization options. Production quality procedures exist, but manufacturing lacks ongoing batch quantity reconciliation. Service procedures, complaint handling, corrective actions, and supplier approval documentation are present without supporting records or complete formalization. The available audit information identifies TÜV Rheinland, but the audit result is recorded as 0 and the report validity ended in 2024; certification status cannot therefore be confirmed. No financial figures are included, and...

Supplier typeThe supplier is identified as a combined company and a limited company, with affiliated companies and a broad multi-category product offering. This supports classification as a diversified manufacturing and trading supplier rather than a narrowly specialized entity.

R&D capabilityThe supplier reports new products within the past year and provides ODM services, indicating active product-development capability. However, it has no available SDK, so the evidence supports product innovation and design manufacturing but not SDK-based development.

Production capacityThe supplier reports six production lines, equipment including saws, drilling, polishing, and veneer-press machinery, and stated annual outputs of 200,000 meters of railing plus 1,500 and 2,000 staircase sets. It also has standardized finished-product inspection instructions and a one-month off-peak lead time, but does not continuously reconcile quantities for each batch or mass production.

Customization capabilityBoth R&D and design-service records list customization from samples, designs, minor customization, flexible customization, and full customization. The consistency across the two slices provides explicit evidence of broad customization capability.

Product Q&A

Q:What information we should offer to quote?

If you have layout or house plan drawing please send us,if not please let me know the dimension of the floor to floor height and dimension of the stairwell.

Q:Have you made some project in our local? Do you know our building code and local standard?

We have finished house project in exceed 40 country so we well know the local building code & standard.

Q:Does your products have any certification?

If your project in Australia we promise all of our glass should have AS/NZS 2208 mark. If your project local in America, our products will have SGCC certification.

Q:If we buy building materials from you, is it hard to install by ourselves?

All of our products easy to install and no need weld,we 100% sure you can install it without any problem.

Q:Do you have any installation guide/drawing for us?

We will send you detail installation manual and drawing,if you still not understand we can show you the installation video.