Road Kerb & Drainage Family
Factory-direct plastic moulds for flat kerb stones (ping shi / flat stones), gutter strip stones, round-top strip kerbs and large road apron slabs — the flat-laid partners to upright kerbstones, used along road edges, gutters, sidewalks and medians.
Upright kerbstones hold the road edge; flat kerb stones and strip stones lie flat to carry surface water toward the drain and to smooth the transition between carriageway and footway. They are a natural cross-sell with our kerbstone moulds and drainage channel moulds.
Zhihua supplies small square flat stones, high-cavity strip stones, 50 cm flat kerb and gutter strip stones, and oversized 71–80 cm apron slabs (including four-hole drainage slabs and project-logo units). Standard catalogue sizes and OEM road-authority profiles are both available in PP or ABS.
From 8 × 8 cm small flat stones to 80 × 50 cm road apron slabs. More profiles and OEM logos can be quoted from drawings or sample photos.
Compact square paving/flat-stone units, including ABS and chamfered versions, for footways, courtyards and small repairs.
8 × 8 × 12 cm
10 × 10 × 5 cm
10 × 10 × 5 cm
10 × 10 × 10 cm · 1 cm chamfer
10 × 10 × 10 cm
12 × 12 × 5 cm
15 × 15 × 5 cm
19 × 19 × 9 cm
Thin veneer slabs, dished small slabs and high-cavity (1-out-2 / 1-out-10) strip stones that cut cost per unit on volume jobs.
17.5 × 8 × 10.5 cm
18.5 × 18.5 × 0.5 cm
18.5 × 18.5 × 2 cm
18.5 × 18.5 × 2 cm
20 × 5 × 4 cm
20 × 8 × 6 cm
20 × 10 × 5 cm
20 × 10 × 5 cm
20 × 10 × 5 cm
20 × 10 × 6 cm
The workhorse road-edging family: 50 cm long flat kerb stones, gutter strip stones and round-top strip kerbs in widths 8–16 cm and heights 6–21 cm.
50 × 8 × 15 cm
50 × 8 × 19 cm
50 × 8 × 20 cm
50 × 10 × 10 cm
50 × 10 × 12 cm
50 × 10 × 15 cm
50 × 10 × 21 cm
50 × 12 × 12 cm
50 × 12 × 15 cm
50 × 12.5 × 16 cm
50 × 15 × 6 cm
50 × 15 × 8 cm
50 × 15 × 10 cm
50 × 15 × 12 cm
50 × 15 × 15 cm
50 × 15 × 18 cm
50 × 15 × 20 cm
50 × 16 × 18 cm
Oversized 71–80 cm apron slabs and tall flat kerbs (up to 30 cm high), including four-hole drainage slabs, beveled faces and project-logo units.
71.5 × 40 × 6 cm
71.5 × 40 × 6 cm
73 × 30 × 10 cm
75 × 12 × 30 cm
75 × 21 × 10 cm
75 × 25 × 10 cm
75 × 25 × 20 cm
75 × 30 × 12 cm
75 × 30 × 20 cm
75 × 48 × 10 cm
75 × 49 × 8 cm
75 × 49 × 8 cm · Guizhou road-bridge mark
76.5 × 10 × 10 cm
78 × 50 × 8 cm
79 × 11.5 × 15 cm
79 × 18 × 30 cm
80 × 10 × 18 cm
80 × 15 × 15 cm
Flat-laid kerb stones are often confused with upright kerbstones, but they are specified differently. Get these points right and the drainage line will sit flat and flow correctly.
Flat kerb and strip stone jobs usually follow a road cross-section. A drawing or clear photo of the profile lets us confirm width, thickness, chamfer/bevel, cavities and demoulding direction.
Send your cross-section drawing or a sample photo. We will match a standard size or quote an OEM mould with your logo.
Send InquiryWhatsApp NowA kerbstone (lu yuan shi / curbstone) is the upright road-edge unit that contains traffic and separates road from footway. A flat kerb stone (ping shi, flat stone or side-flat stone) is laid FLAT, typically between the upright kerb and the carriageway or gutter: it forms the smooth apron/transition strip that guides surface water toward the drain. Round-top strip stones and gutter strip stones sit in the same flat-laid drainage line. They are a complementary family, usually ordered together with upright kerbstones.
It is length x width (the flat face width) x height/thickness, in centimetres. For flat-laid stones the last figure is usually small (6-21 cm) because the unit lies down; for tall flat kerbs (e.g. 79 x 18 x 30) the last figure is the standing height. On thin veneer slabs such as 18.5 x 18.5 x 0.5 cm, 0.5 cm is the real veneer thickness, not a typo.
It is the number of finished pieces one mould casts per pour. A 1-out-10 strip-stone mould makes ten small stones in a single cycle. More cavities mean lower cost per piece and faster output for high-volume items, but the mould is larger. When comparing quotes, check whether the price is per mould or per finished stone.
Use a gutter strip stone (the narrow 8-12 cm wide, often deeper units) right at the channel to carry the water, and wider flat kerb apron slabs (up to 48-50 cm wide) as the transition toward the footway or carriageway. Round-top strip stones are used where a slightly raised, rounded edge is wanted in the gutter line. Send a cross-section and we will match the profile.
Yes, when cast as precast concrete on a flat vibrating table. These wide apron slabs are flat panels, not beams, and they gain stiffness from their width and the sub-base under them. The mould has stiffening ribs on the outside so it stays flat through casting. Handle and store big slabs flat, not on edge.
PP (polypropylene) is the default for high-volume plain flat stones - it flexes under vibration and demoulding and reaches 150+ pour cycles. ABS is chosen where a sharp chamfer, a dished/concave face or a thin crisp arris must stay precise over many cycles; several of our small and 50 cm items are stocked in ABS. Tell us the profile and we will recommend the grade.
Yes. We already produce project-marked units (e.g. the 75 x 49 x 8 cm slab with a Guizhou road-bridge authority mark). Four-hole and standard apron slabs can be tooled with your logo or marking from artwork; OEM tooling takes about 10-15 days.
Standard catalogue flat kerb, strip stone and apron slab moulds have no strict MOQ and mixed-SKU orders are welcome. Lead time is typically 15-30 days; OEM/profile or logo tooling depends on complexity. Send sizes, quantities and destination port for an FOB Ningbo/Shanghai quote.