Top Priority Product Category
Factory-direct road curb, side stone, slope kerb, L-type, S-type and radius kerbstone moulds for municipal roads, medians, sidewalks and landscaping edges.
Kerbstone and curbstone moulds are a natural cross-sell with drainage and paving products. They are used in road edging, sidewalks, traffic medians, parking lots, parks, residential communities and municipal infrastructure upgrades.
Zhihua supplies plastic moulds for slope kerbs, L-type side stones, S-type curbstones, straight line kerbs, radius kerbs and radius corner pieces. Standard catalogue items and custom road-authority profiles are both available.
Expanded catalogue with 48 qualified product examples. More sizes and styles can be quoted from drawings or sample photos.
35 × 35 × 15–10 cm
49 × 18 × 30 cm
49 × 21 × 15 cm
49 × 27 × 15 cm
49 × 30 × 15 cm
49.5 × 20 × 28 cm
49.5 × 38 × 15 cm
50 × 15 × 10 cm
50 × 15 × 15 cm
50 × 20 × 20 cm
30 × 29 × 29–19 cm
30 × 30 × 10–6 cm
35 × 29.5 × 19–9.5 cm
39.5 × 40 × 25 cm
40 × 40 × 20 cm
50 × 28 × 16–8 cm
50 × 31 × 18 cm
50 × 35 × 14–7 cm
50 × 35 × 18–7 cm
50 × 35 × 20–8 cm
25 × 20 × 15–5 cm
29 × 20 × 20–10 cm
30 × 29 × 18 cm
49.5 × 36 × 19 cm
20 × 30 × 15 cm · angled integrated profile
30 × 15 × 25 cm
30 × 25 × 12 cm
30 × 30 × 12 cm
20 × 30 × 15 cm
30 × 30 × 12 cm
50 × 10 × 10 cm
50 × 15 × 6 cm
50 × 10 × 10 cm
50 × 12 × 10 cm
50 × 12 × 15.5 cm
30 × 20 × 12 cm
49.5 × 41 × 10–16 cm
50 × 13 × 10 cm · 1-out-2 mould
49.5 × 29 × 20 cm · notch 12 × 1.5 cm · hole Ø4.2–3 cm
50 × 28 × 16–8 cm
20 × 30 × 12 cm
20 × 30 × 15 cm
20 × 30 × 15 cm
20 × 30 × 12 cm
30 × 40 × 12 cm
20 × 30 × 12 cm
49 × 20 × 25 cm
50 × 35 × 50 cm · round hole Ø5 cm
48 qualified moulds across 16 profile families, from 20 cm corner pieces to 50 cm straight runs. Slope and S-type profiles are the volume products; corner and elbow pieces exist so a kerb line can actually turn.
Kerbs are bought by the run, and a run is never all straight. Working out the corner and transition pieces before quoting avoids a second shipment later.
Kerbs are high-volume repeat castings, so demoulding behaviour matters more than on one-off components.
These are regional names for the same precast road-edge unit, not different products:
| Profile family | Sizes held (cm) | What to confirm when quoting |
|---|---|---|
| Slope kerbstone | 35×35×15–10 · 49×18×30 · 49×21×15 · 49×27×15 · 49×30×15 · 49.5×20×28 · 49.5×38×15 · 50×15×10 · 50×15×15 · 50×20×20 | Which end the height refers to, and the channel gradient you need |
| S-type kerbstone | 30×29×29–19 · 30×30×10–6 · 35×29.5×19–9.5 · 39.5×40×25 · 40×40×20 · 50×28×16–8 · 50×31×18 · 50×35×14–7 · 50×35×18–7 · 50×35×20–8 | High-end and low-end height, face curvature |
| L-type kerbstone | 25×20×15–5 · 29×20×20–10 · 30×29×18 · 49.5×36×19 · plus 49.5×41×16 with flat edge | Which leg sits vertical, and whether a flat outer edge is required |
| Curved kerbstone | 20×30×15 angled integrated · 30×15×25 · 30×25×12 · 30×30×12 | Bend radius, and whether your figure is the outer or inner arc |
| Line-profile & chamfered | 30×30×12 · 50×10×10 · 50×12×10 · 50×12×15.5 · 50×15×6 · 30×20×12 angled | Arris detail and line depth on the visible face |
| Corners & elbows | 20×30×12 chamfered · 20×30×12 line-profile · 20×30×15 curved angled · 30×40×12 line-profile curved | Must match the straight-run profile family; state the corner angle |
| Functional units | 49.5×29×20 S-type drainage (notch 12×1.5 cm, hole Ø4.2–3 cm) · 50×13×10 water barrier 1-out-2 · 49×20×25 L-type slag retaining wall · 50×35×50 traffic separator | Inlet spacing, notch position, and per-piece vs per-mould pricing |
Kerbstone projects often follow local road authority profiles. A cross-section drawing or clear product photo helps us confirm slope, radius, chamfer and demoulding direction.
Send your profile drawing or sample photo. We can review standard catalogue options or OEM mould feasibility.
Send InquiryWhatsApp NowMoulds marked R1000 and 1/3: a 1 metre radius curve, divided into thirds. A curved kerb line is never one bent unit — the arc is split into segments, and each segment must be tapered (shorter on the inner face than the outer) so the joints close evenly. Cast a curve from rectangular blocks and you get a wedge-shaped gap at every joint. One mould equals one radius, so tell us the radius your drawing calls for.
The last pair is the height at the two ends of the same kerb: 18 cm at the high end and 7 cm at the low end. That taper is the drainage fall designed into the unit, not a tolerance or a size range. Tell us which end your drawing dimension refers to so the gradient comes out right.
They are the outer and inner arc length of one piece, the same convention we use on power coping corners. A “30–30” corner measures 30 cm along both faces; it is not 30 by 30 cm in plan.
No. Corner and elbow units must come from the same profile family as the straight runs, otherwise the visible faces will not align at the joint. We hold chamfered, line-profile and curved-angled corners specifically so each family can turn.
It means the mould casts two finished pieces per pour. The 50×13×10 cm water-barrier mould is 1-out-2, so when comparing quotations check whether the price is per finished kerb or per mould — the cost per unit and the cycle time are what actually differ.
Slope and S-type cover most road work: slope for a straightforward shed toward the channel, S-type where a softer road-to-footway transition is wanted. L-type suits raised edges and planting beds. Send a section drawing, since two kerbs both called “slope kerb” can differ by 10 cm in width.
Yes. The S-type drainage kerb is 49.5×29×20 cm with a 12×1.5 cm notch and a Ø4.2–3 cm hole. Count inlet units separately from the straight run when you send quantities.
ABS where the top arris is chamfered or sloped and must stay sharp across many cycles; PP for plain high-volume production. Both give 150+ pour cycles with normal demoulding practice.
Yes. Kerbstone (British English) and curbstone (American English) are the same precast concrete road-edge unit; mould and mold are the same word spelled differently. Road curb, side stone, road edge stone and concrete kerb usually refer to the same product family. Always confirm the cross-section profile rather than the name, because regional standards differ.
Yes. OEM tooling from a cross-section drawing or sample is standard for municipal projects that must follow a local authority profile. A drawing is preferred; clear photos of the section plus finished dimensions are enough for an initial feasibility review. Straight and radius pieces of the same custom profile can both be produced.
Standard catalogue profiles have no strict MOQ and mixed-SKU orders are welcome; OEM profiles depend on profile complexity. Lead time is typically 15–30 days after drawing approval. Send your profile, quantities and destination port for an FOB Ningbo/Shanghai quote.