Advantage

·Significantly reduce production cost
·High degree of automation
·Continuous production avoids restrictions on the length of the pipe
·Flexible pre-insulated pipe can be directly buried underground, requiring smaller trenches
·Excellent mechanical properties
·The pre-insulated pipe is airtight and impermeable, anti-chemical corrosion, and the inner pipe is free from oxidation.
·The pipe can be rolled and transported in rolls, needs less pipe
connectors, reduces construction costs, avoids a lot of trouble in the construction.

Product Parameters

Process Flow 

Up carrier pipe--pulling up to line--pipe catching connect--transport forward---put into seal &cover film device--foaming--foam curing ---PE cover extruding--vacuum sorb -- spray cooling--checking splice--cutting splice--off-pipe--down off pipe 

Equipment components:
-- Plastic pipe upload table
-- Plastic pipe pulling device
-- Transfer Straight V wheel
-- Crawler-type push machine
-- Far infrared heating device
-- Pipe centering correction system
-- Foaming machine system
-- Over molding system
-- Automatic feeding machine
-- Hopper dryer
-- Extruder
-- Spray cooling water tank
-- Cutting Machine
-- Stacking table
-- Control System

CASES

Company Profile

Qingdao Huashida Machinery Co., Ltd., founded in 2003, is a leading Chinese high-tech enterprise specializing in intelligent equipment for pipeline anti-corrosion and pre-insulation systems. Headquartered in the Huashida Industrial Park (33,000 m²) in Chengyang District, Qingdao, Shandong Province, the company integrates R&D, manufacturing, marketing, and global service. 

Huashida holds 58 invention patents, 38 utility model patents, and 38 software copyrights, reflecting its strong innovation capability. The company maintains deep technical collaborations with Beijing University of Chemical Technology, Qingdao University of Science and Technology, and Qingdao University of Technology. The core technology originates from Germany, and it boasts exceptional R&D and innovation capabilities, continuously driving technological advancement in the industry. Huashida currently has over 100 employees, including 3 senior technical consultants, 4 senior engineers, 15 mechanical engineering technicians, and 12 installation and commissioning specialists.

 Core Product Systems

A. Steel Pipe Anti-Corrosion Systems

· Steel Pipe 3-Layer Polyethylene (3LPE) Anti-Corrosion Coating System

· Steel Pipe Internal & External FBE Coating System

· Steel Pipe External 3LPE & Internal Epoxy Coating System

· Steel Pipe External 3LPE & Internal Liquid Paint Coating System

B. Pre-Insulated Pipe Production Systems

· Vacuum Calibrating Method Pre-Insulated Pipe Outside Casing Extrusion System

· PUR Spray PE Wrap Pre-Insulated Pipe Production System

· Continuous PERT Flexible Pre-Insulated Pipe Production System

· Continuous PU Foam Pre-Insulated Pipe Production System

· PERT Rigid Pre-Insulated Pipe Production System

· Rubber Foam Insulation Tube / Plate Production System