Pietra Grey Marble Stone Step and Stairs Factory

Excellent Stone supplies Pietra Grey Marble stair treads, risers and custom steps for contractors, stone distributors and commercial projects. Cut from Iranian Pietra Grey marble, these dark grey stairs feature fine white veining and polished or honed finishes. We fabricate straight treads, curved steps, winders and landing pieces to project drawings, with matching stone selection, custom nosing and numbered stair sets.

For a complete staircase, tread dimensions alone are not enough. Riser heights, exposed edges, landing joints and vein direction must also match the stair drawings. We review these details before cutting so the finished stone pieces follow the intended flight layout.

Pietra Grey Marble Stair Treads and Risers — Sizes & Specifications

Pietra Grey marble stair treads provide the horizontal walking surface, while matching risers complete the vertical face of each step. The stone has a charcoal-grey background with fine white veins, making it suitable for coordinated stair flights where the tread, riser and landing share one material.

A common starting size for straight stair treads is 1200–1500 × 320–350 × 20/30 mm. Matching risers typically measure 1200–1500 × 120–160 × 20 mm. Custom cutting follows the finished dimensions in the approved stair drawing.

Sizes are reference dimensions. Final tread depth, riser height, thickness and nosing profile depend on the stair construction and approved project drawings.

Pietra Grey Marble Steps — Dark Grey Veining and Finishes

On a staircase, Pietra Grey looks different from a full marble slab. Each long tread exposes a narrow section of the stone, while the riser introduces another visible face. Fine white veins may run along a tread, cross it diagonally or continue from one step to the next, depending on the slab and cutting direction.

The dark grey background makes the tread-and-riser arrangement visually distinct. On a straight staircase, related vein movement can create a continuous appearance; on a turning flight, the direction changes with each shaped step.

Polished Pietra Grey Marble creates stronger reflections and brings out the contrast between the charcoal background and white veins. Honed Pietra Grey Marble produces a softer, lower-reflection surface for a more restrained stair design.

Both finishes require proper selection for the intended stair use. The final walking-surface finish should be reviewed against the project’s slip-resistance requirements, traffic conditions and applicable local standards.

Custom Pietra Grey Marble Stairs — Straight, Curved and Landing Pieces

Custom Pietra Grey marble stairs can include straight steps, curved stair treads, winders and landing pieces. Straight flights usually use repeated rectangular components. Turning stairs require individually shaped pieces, because the inner and outer tread dimensions change through the curve.

For shaped staircases, the drawing should identify each finished piece, its exposed edges and the direction of the marble veins. Landing panels also need planned joints and connections to the adjoining stair treads or floor finish.

Treads, risers and landing pieces are cut to the stair schedule rather than one universal size. The schedule should account for the finished levels, installation joints, substrate, tread projections and any visible side returns.

For a curved flight, templates or detailed shop drawings may be needed to establish the finished shape. Where several stone pieces connect at a landing or turning point, their visible edges and vein direction should be reviewed together before fabrication.

Marble Stair Nosing, Edge Profiles and Slip Considerations

The front edge, or nosing, is one of the most visible parts of a marble stair tread. It also needs to work with the riser position and the finished stair dimensions. A consistent nosing profile helps keep the full stair flight visually coordinated.

Pietra Grey marble stair treads can be fabricated with eased, beveled or saw-cut edges, with custom profiles reviewed from the project drawing. Exposed side edges, returns and landing junctions should be identified separately rather than assuming that every edge receives the same finish.

The selected nosing detail affects the finished tread depth and the visible joint with the riser. On a long staircase, even a small difference in front-edge projection can become noticeable when the steps are viewed together.

For stairs requiring additional slip resistance, the project may specify suitable surface treatment, anti-slip strips or grooves near the nosing. These details should be checked for compatibility with the marble, the required finish and the applicable safety specification before production. A rounded or beveled edge alone does not establish the slip resistance of the walking surface.

Pietra Grey Marble Stair Sets — Vein Matching and Flight Numbering

A full staircase uses many separate pieces, so selecting the material is only the first step. Pietra Grey slabs vary in the density, direction and movement of their white veins. For coordinated stairs, the selected slab range and cutting direction should be considered across the complete flight.

Long straight treads may benefit from a related vein direction, while curved steps need separate consideration because their orientation changes. Where the design requires a closer visual match, slab photographs and the cutting sequence can be reviewed before fabrication.

For projects with more than one staircase or several flights, piece numbering helps keep the cutting and installation sequence clear. A stair schedule can identify each tread, riser, landing and shaped piece by flight, level and installation position.

For example, a project with two stair flights should separate the straight steps, turning pieces and landings in its production list. The same identifiers can be used when reviewing finished-piece photographs and preparing packing labels.

Wholesale Pietra Grey Marble Steps — Inspection, Packing and Orders

Excellent Stone supplies cut-to-size Pietra Grey marble stair steps for contractors, importers, distributors and project stone suppliers. Orders can include repeated straight treads and risers together with custom landing and curved pieces.

Before shipment, finished-piece photographs can be provided for review of stone appearance, surface finish, visible edges and piece identification. Dimensions and the number of finished components should be checked against the approved production schedule.

Long marble treads require protection at the nosing, corners and exposed edges during transport. Wooden export crates can be organized by flight or installation area, with suitable separation between pieces and identifying marks that correspond to the packing list.

Our standard natural-stone MOQ is 50 m², and normal production lead time is approximately 25–35 days, depending on selected material, drawing complexity, fabrication and order quantity. The final production schedule is confirmed with the quotation.

For the raw material and slab selection, see our Pietra Grey Marble slabs. For matching large wall applications, see Pietra Grey Marble wall panels.

Pietra Grey Marble Stairs FAQ

Where does Pietra Grey Marble for stair treads come from?

Pietra Grey is a natural marble from Iran. Stair treads, risers and custom steps are fabricated from selected slabs to the approved dimensions and finish.

What are the common sizes for Pietra Grey Marble stair treads and risers?

Tread references are 1200–1500 × 320–350 × 20/30 mm. Risers are typically 1200–1500 × 120–160 × 20 mm. Custom dimensions follow the stair drawings.

Can you supply custom curved Pietra Grey Marble steps?

Yes. Curved steps, winders and landing pieces can be fabricated to detailed drawings or suitable templates. The finished geometry and exposed edges are confirmed before cutting.

Are polished and honed Pietra Grey Marble stairs available?

Yes. Both polished and honed finishes are available. The tread finish and any additional slip-resistant treatment should meet the project's intended use and safety requirements.

Can Pietra Grey stair treads and risers be vein matched?

We can review slab selection and cutting direction for coordinated stair sets. Natural vein variation remains, but planning the pieces from an approved material range helps control the finished appearance.

How are custom marble stair sets packed for export?

Finished treads, risers and landing pieces can be packed in protective wooden crates. Piece numbering and crate marks can follow the stair schedule to assist inspection and installation.

What information is required to quote wholesale Pietra Grey Marble stairs?

Send the stair drawings, tread and riser sizes, quantity, thickness, finish, nosing profile and destination. Include curved steps, landings and matching requirements where applicable.