Do you provide drawing support before production?

Yes, we can provide shop drawings or production drawings for customer confirmation before manufacturing.

Do you support OEM or ODM service?

Yes, we support OEM and ODM services for distributors, contractors, developers, and brand customers.

What is the delivery time?

Delivery takes 45 days after you pay the deposit and confirm the shop drawing.

Luxury Double Helical Staircase with Vertical Metal Railing for Villa Interior

Name: Luxury Double Helical Staircase with Vertical Metal Railing for Villa Interior
Brand: Foshan Cosy House Building Materials Co., Ltd
SKU: 2290592205

Guangdong, ChinaFoshan Cosy House Building Materials Co., Ltd

US$485.80

2-99 Square Meters

US$445.80

100-999 Square Meters

US$395.80

1,000+ Square Meters

Sample price:US$300.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Return and Replacement

Warranty

20 Years

Model NO.

SS-01

Structure

Spiral

Bench

Double Stair

Type

Floating Staircase

Material

Steel-Wood

Usage

Indoor, Outdoor

Stair Type

Arc Stair

Product Name

Double Helical Staircase with Metal Railing

Style

Luxury / Modern

Application

Indoor / Residential / Villa / Foyer

Stair Shape

Double Helical / Curved

Tread Material

Wood

Frame Material

Steel

Railing Material

Metal

Color

Black / Wood Color / Custom

Surface Treatment

Painted Finish / Powder Coating

Feature

Modern / Transparent / Customized

Size

Customized Size

OEM/ODM

Available

Transport Package

Standard Sea Freight Packaging

Specification

2400*1200*100mm

Trademark

Cosyhouse

Origin

China

HS Code

7308900000

Production Capacity

100000

Key features

20-Year Warranty: Comprehensive 20-year warranty coverage for peace of mind and long-term reliability.

Customizable Dimensions: Floor height, radius, and tread sizes are fully customized to fit specific job site requirements.

Premium Material Options: Features steel-wood structure with choices for wood, glass, or stone treads and metal railings.

OEM/ODM Support: Full OEM and ODM services available for distributors, contractors, and brand customers.

Luxury Design: Double helical curved layout with vertical metal railings, ideal for villas and grand foyers.

Drawing Support: Professional shop drawings and production drawings provided for confirmation before manufacturing.

Versatile Application: Suitable for indoor and outdoor use in residential, commercial, and public projects.

Fast Delivery: Standard delivery within 45 days after deposit payment and shop drawing confirmation.

Company profile

Fast DeliveryOverseas ServicesCustomization from SamplesCustomization from Designs

Foshan Cosy House Building Materials Co., Ltd

Guangdong, China

Business Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2005-08-16Nearest Port: guangzhou, shengzhenAverage Response Time: ≤6.16hTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryFoshan Cosy House Building Materials Co., Ltd is a China-based limited trading company established in 2024 with 11 employees. It offers multiple door, window, and flooring categories and operates within building-material sales and import/export. The supplier reports professional technical capability, 3D software design services, and broad customization options. Production information lists output for cast aluminum, stainless steel, and wooden doors, supported by 11–20 quality-control staff, although its stated trading-company status and limited employee count warrant verification of manufacturing arrangements. A CTI audit is recorded as valid from February 28, 2025 to February 27, 2026, but the audit result is shown as 0 without an explanatory interpretation. No SDK is available. Financial records are referenced by year, but no assessable financial results are provided. Evidence is insufficient regarding after-sales service and customer cases. Fire-drill and environmental-assessment statuses are unknown.

Supplier typeThe supplier is identified as a limited company and trading company based in Foshan, China, with business activities covering building-material sales, professional design services, and import/export. Its listed scope includes doors, windows, ceramics, sanitary ware, hardware, plastics, and related building products.

R&D capabilityThe supplier is explicitly described as having professional technical and research-and-development capability and providing 3D software design services. It also claims a strong technical foundation and state-of-the-art production equipment, while the absence of an available SDK limits the documented software-development capability.

Production capacityReported annual output includes 10,000 cast aluminum doors, 10,000 stainless steel doors, and 50,000 wooden doors, with 11–20 quality-control staff. The supplier also states that it has production equipment and over 20 years of production and sales experience, but it is legally identified as a trading company with 11 employees, so the extent of directly owned manufacturing capacity requires verification.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides 3D software design services, supporting the conclusion that it can accommodate varied product-design requirements.

Product Q&A

Q:What is the warranty period?

We provide a 20-year warranty for this staircase.

Q:Is the staircase size customizable?

Yes, we can customize floor height, staircase radius, tread size, railing height, and other structural details according to project requirements.

Q:What materials are used for this staircase?

The staircase is usually made of a steel structure with wood treads and a metal railing system. Options include stainless steel, carbon steel, aluminum, WPC, glass, and solid wood.

Q:Can I choose different tread materials or finishes?

Yes, tread material, wood finish, and surface color can be customized according to customer needs.

Q:Is the metal railing customizable?

Yes, railing spacing, vertical bar design, handrail details, and finish color can be adjusted based on project requirements.