Outdoor Spiral Staircase Custom Size Steel Stair for Exterior Projects

Name: Outdoor Spiral Staircase Custom Size Steel Stair for Exterior Projects
Brand: Double Building Materials Co., Ltd.
SKU: 1984354541

Guangdong, ChinaDouble Building Materials Co., Ltd.

US$4,500.00-6,500.00

1 Set

Product specifications

Spiral Staircase

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

5 Years

Warranty

Online Technical Support

Structure

Beam

Bench

Single Stair

Type

Ordinary Stairs

Material

Stainless Steel

Usage

Indoor, Outdoor

Stair Type

Spiral Stair

Product Name

Steel Spiral Stairs

Tread

Steel

Beam

Steel Center Beam

Railing Type

Steel Railing

Style

Modern Disgn

Installation

CAD Drawing Provided

MOQ

1 Set

Packing

Plywood & Woven Bag

Delivery Time

45 Days

Transport Package

Plywood Package

Trademark

Double Building

Origin

China

HS Code

4401210090

Production Capacity

800pieces/Year

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: ≤4.86h

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.