Name: Black Metal Frame Padded Square Stool
Brand: Kaida Sintered Stone
SKU: RXZU2U

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PRODUCT MODULE 01 / 06

Physical Dimensions

Automatic mm / inch conversion · Core engineering specifications

Data source: Structured from factory data; final measured values prevail.

Overall dimensions (W × D × H)	350 × 350 × 450 mm
Finished Seat Cushion Thickness	90 mm
Backrest Padding Thickness	70 mm
Lumbar Support Zone Height	240 mm
Clear Width Between Armrests	540 mm

PRODUCT MODULE 02 / 06

Weight, Load & Performance

Net weight / load capacity / users / durability

Data source: Product performance data; verify exact test conditions before procurement.

Product net weight	3 kg
Static vertical seat load capacity	150 kg
Stacking height per nested stool	50 mm
Seat cushion compression recovery rate	92%
Frame static load test rating	200 kg
Recommended maximum continuous use duration	8 hours
Seat Foam Density / Rebound Reference	45 kg/m³ / 65%
Back Foam Density Reference	38 kg/m³
Upholstery Thickness / Abrasion Reference	1.4 mm / 50000 cycles
Five-star Base Static Load Reference	Acceptance target ≥120 kg; chair reference load 150 kg

PRODUCT MODULE 03 / 06

Materials & Structure

Core acceptance fields · Panels / hardware / frame / upholstery

Data source: Subject to the factory material list and inspection report.

Structural frame	1.2mm thick Q235 steel tube, black matte powder-coated finish
Seat upholstery surface	0.8mm thick black faux leather, stain-resistant smooth finish
Seat cushion core	30kg/m³ high-resilience polyurethane foam, 40mm total thickness
Frame joint construction	MIG-welded joints, ground smooth with matching powder touch-up
Seat to frame attachment	Cross-head steel screws through frame top rail into seat base plate
Under-seat base board	12mm thick MDF support board under foam core
Frame bottom foot pads	5mm thick non-slip PE plastic foot pads, floor protection
Seat Internal Support Board Thickness	14 mm bent plywood or equivalent support board
Backrest Internal Frame Thickness	14 mm bent plywood/composite reinforced frame
Gas-lift Engineering Specification	Recommended Class 4; outer tube 50 mm; stroke 100 mm
Tilt Mechanism Plate Thickness	2.5 mm cold-rolled steel
Five-star Base Material Thickness	Metal base wall 3.5 mm; diameter 700 mm

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Nesting stackable storage	Fully stackable up to 10 stools for compact storage
Fixed non-swivel seat	Rigid fixed seat connection to frame with no rotation or tilt
Floor scratch protection	Integrated foot pads prevent hard metal contact with finished floors
Quick assembly requirement	Knock-down design requiring only 4 screws to attach seat to frame
Multi-surface use suitability	Stable on hard floors and low-pile carpet with no caster attachments
Recline Angle / Lock Reference	125° with 3suggested lock positions
Tilt Tension User-weight Range	Reference adjustment coverage 120 kg
Height Adjustment Stroke	100 mm continuous travel
Rotation / Mobility Configuration	360° swivel with 5-caster multidirectional movement

PRODUCT MODULE 05 / 06

Packaging & Logistics

Verified carton / gross weight / assembly / loading data

Data source: Reference for export quotations and container planning.

Reference Package Count	1 set / 2 cartons
Reference Assembly Time	40 minutes per set
Reference Carton Dimensions	850× 420× 720 mm
Reference Packaged Gross Weight	23 kg/set
Reference Carton Volume	0.26 m³/set
Indicative 20GP Loading	135 sets at 85% space utilization
Indicative 40HQ Loading	320 sets at 85% space utilization

PRODUCT MODULE 06 / 06

Applications & Usage

Recommended spaces / users / usage modes

Data source: Recommended applications based on product form and category.

Office visitor waiting areas	Compact stackable design for flexible high-traffic temporary seating space
Dining area supplementary seating	450mm seat height matches standard dining and conference table heights
Temporary event seating	Lightweight stackable structure for fast setup and teardown at events
Small apartment multi-use seating	Slim open frame occupies minimal floor space for compact living areas
Break room casual seating	Durable faux leather surface resists spills and wipes clean easily
Recommended Matching Desk Size	2.4 m executive desk
Reference Daily Use Duration	8 hours/day; confirm by ergonomic testing

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

Safety standard reference	EN 12520:2015 Furniture - Strength, durability and safety for domestic seating
Surface finish reference	EN 1022:2019 Domestic furniture - Seating - Determination of stability

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

Recommended applicability	GB/T 3324General technical requirements for metal furniture
Seating performance reference	GB/T 10357.3Test methods for furniture: Mechanical properties of seats

Standardized tender description text

This product must meet the following technical requirements:
1. Recommended applicability: GB/T 3324General technical requirements for metal furniture;
2. Seating performance reference: GB/T 10357.3Test methods for furniture: Mechanical properties of seats;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The Black Metal Frame Padded Square Stool from Kaida Sintered Stone, model STL-SQ-MBLK-350, is an upholstered metal frame square stool defined by clean, minimalist visual lines and a space-conscious square layout. Its matte black finish on the structural frame pairs seamlessly with smooth black upholstery, creating a low-profile, unobtrusive silhouette that fits seamlessly across a range of interior design schemes without overwhelming surrounding decor. The stool’s construction is built for consistent, long-lasting use. Its structural frame uses 1.2mm thick Q235 steel tube with a black matte powder-coated finish, with MIG-welded joints ground smooth and finished with matching powder touch-up to eliminate sharp edges and prevent unsightly corrosion. The seat attaches to the frame via cross-head steel screws secured through the frame top rail into a 12mm thick MDF under-seat support board, paired with a 14mm bent plywood internal seat support board for consistent structural stability. The seat features a 0.8mm thick stain-resistant smooth black faux leather surface, over a 30kg/m³ high-resilience polyurethane foam core with 90mm total finished cushion thickness; 5mm thick non-slip PE plastic foot pads line the base of each frame leg to avoid hard metal contact with finished flooring. The frame is rated for a 200kg static load, while the seat supports 150kg of static vertical load, and the seat foam delivers a 92% compression recovery rate to hold its shape over regular use, with a recommended maximum continuous use duration of 8 hours. Practically, the stool features a rigid fixed non-swivel seat with no rotation or tilt for stable seating, and a fully stackable nesting design that supports stacking up to 10 stools, with each nested stool adding just 50mm of stacking height for compact storage. The knock-down design requires only 4 screws to attach the seat to the frame, with an assembly time of 40 minutes per unit; the stool sits stably on both hard floors and low-pile carpet without caster attachments, and its smooth faux leather surface wipes clean easily to address spills during regular use. This stool is well suited for a wide range of public and private spaces: it works as flexible, high-traffic temporary seating for office visitor waiting areas, supplementary seating for dining and conference spaces (with its seat height aligned to standard table heights), fast-deploy temporary seating for events, space-saving multi-use seating for small compact apartments, and casual, easy-to-clean seating for workplace break rooms. For procurement planning, note that each set ships across 2 cartons with a total packaged gross weight of 23kg, and a 20GP shipping container can hold 135 sets at 85% space utilization. Coordinate seating quantity to match projected peak occupancy, and account for assembly labor timelines during deployment scheduling.

Black Metal Frame Padded Square Stool Specifications

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