Import Best Price Jwell Quality Dwc Pipe Machine — Buy in wholesale FOB from Supplier in China

This HDPE double wall corrugated (DWC) pipe extrusion line from Qingdao Huasu Machinery produces corrugated drainage and sewage pipes in diameters from 32 mm to 1200 mm. The line forms the characteristic annular-corrugated profile through co-extrusion of two layers: a smooth inner wall for low hydraulic resistance and a corrugated outer wall for ring stiffness. The machine handles HDPE, PP, and PVC formulations, with typical output rates dependent on pipe diameter and material index. Screws are nitrided or bimetallic for abrasion resistance against mineral-filled compounds.

The extrusion line comprises a single-screw or twin-screw extruder, a corrugation mould block system (vacuum or air-cooled), a co-extrusion die head, a forming/cooling tunnel, a cutter with planetary or flying-knife action, and a stacking unit. Mould blocks are precision-machined from aluminium or steel alloy, with hardened surfaces for 500,000+ cycles. Typical ring stiffness classes achieved are SN4 and SN8 to EN 13476, with higher SN ratings possible through wall-thickness optimisation. The inner layer is typically 80-85 percent of total wall thickness to maximise flow efficiency. Control is via PLC with HMI, with melt pressure and temperature zones monitored at 0.5 Hz logging frequency.

Buyers are municipal water boards, agricultural irrigation contractors, mining slurry handlers, and building drainage installers across Southeast Asia, the Middle East, Africa, and South America. The machine ships from Qingdao Port, Shandong Province. Confirm with the supplier the exact extruder model, L/D ratio, main motor power in kW, and whether the corrugator uses vacuum-forming or air-blowing block cooling. Available related lines at this supplier include UPVC DWC pipe (38-1000 mm), HDPE water/gas pipe (16-1200 mm), and large-diameter hollow-wall spiral pipe (200-3000 mm).

Qingdao Huasu Machinery Fabricate Co., Ltd operates from Jiaozhou Bay Industrial Zone in Jiaozhou, Qingdao City, Shandong Province, China. The facility sits 30 kilometres from Qingdao Airport, with a site area of 30,000 square metres and built-up area of 16,000 square metres. The supplier lists a harbour trust tier and a response rate of 0.00 percent, with no recorded average response time. The supplier states strong technical support and innovating ability, with advanced technology and mature process capability across multiple plastic extrusion lines.

The company exports to European countries, South America, the Middle East, Southeast fallout, Oceania, and Africa. The listing does not state ISO certification, specific engineering headcount, annual revenue, or named reference clients. The supplier's product range extends beyond DWC pipe to UPVC corrugated pipe, HDPE water/gas pipe, PVC rigid pipe, large-calibre hollow-wall spiral pipe, and single-wall corrugated pipe lines. Buyers should verify directly which machine configurations are held in stock versus built-to-order, and the current backlog for the HDPE DWC line.