Road Barrier Blow Molding Machines for Water-Filled Traffic Barriers

The price depends on the machine's capacity, clamping force, mold dimensions, automation level, and included auxiliary equipment. Published supplier listings show indicative prices ranging from approximately US$38,000 to over US$250,000, with some heavy-duty configurations listed as high as US$450,000. These are advertised prices, not verified transaction prices, and may exclude molds, shipping, installation, and commissioning. Before comparing quotations, ask each supplier to itemize the machine, road barrier mold, chiller, air compressor, installation, and after-sales service.

Actual output depends on the barrier's weight and dimensions, resin grade, mold cavities, extrusion capacity, and cooling time. Do not use a machine's dry-cycle rate as its finished-product output: for example, a supplier may advertise a dry cycle of 100 cycles per hour, but that does not mean 100 finished barriers per hour. Request a production estimate based on your exact barrier drawing and target weight, then ask the supplier to demonstrate a continuous production run and record accepted parts per hour, scrap rate, and cycle time.

Barrier length alone is not enough to select a machine. A 2 m barrier with a narrow profile may require different equipment from a shorter barrier with a wide base and thick walls. Send the supplier the barrier's overall dimensions, 3D drawing, target empty weight, wall-thickness requirements, and mold layout. Confirm the machine's mold width and height limits, opening stroke, clamping force, and maximum parison weight before choosing a model; do not select a machine based only on its advertised maximum product volume.

A 120L or 230L machine may be suitable for certain smaller barriers, but the rated volume alone does not confirm compatibility. The finished barrier must fit within the mold and machine opening, and the extruder or accumulator head must supply enough molten HDPE for the required part weight. Before ordering, provide the supplier with the barrier's dimensions, empty weight, and mold drawing, then obtain written confirmation of mold compatibility, maximum parison weight, clamping force, and expected cycle time.

No. A 1000L-class machine is not automatically required for every road barrier; the appropriate capacity depends on the product's actual volume, weight, dimensions, and design. Larger machines may be relevant for bulky barriers or other large hollow products, but they can increase equipment and operating costs. Compare at least two machine configurations against your largest planned barrier and ask each supplier to confirm the maximum mold size, shot capacity, HDPE output, and achievable production rate for your specific product.