PVC & PP Pipe Belling Machine

+25% Output Efficlency

-15% Energy Consumption

99.6% Stable Operation Rate

Why our machinery stands out

Double Heating Ovens Strategy: Equipped with two independent heating ovens operating alternately to cut plasticization wait times in half, matching high-speed extrusion lines perfectly.
Flawless Joint Geometry: Delivers tight-tolerance U-type solvent welding sockets and R-type rubber ring sockets with perfectly uniform wall distribution.
Intelligent Temperature Management: Utilizes continuous internal rotative heating and air-forced circulation to guarantee zero material blistering or localized scorching.
Full Automation Integration: Operates on a synchronized Siemens PLC system that automatically executes pipe feeding, heating, belling, cooling, and unloading seamlessly.

The MIDTECH Double Oven Plastic Pipe Belling Machine is a high-speed, fully automated downstream solution designed for premium PVC and PE pipe production lines. It is widely used to manufacture civil water supply pipes, agricultural irrigation lines, electrical conduits, and industrial drainage piping.

Parameter

Model	SGK75	SGK160	SGK250	SGK315	SGK630
Pipe Range (mm)	16~75	50~160	50~250	110~315	315~630
Total Power (kW)	15	18	18	20	32
Expansion Type	R type or U type	R type or U type	R type or U type	R type or U type	R type or U type
External Dimensions (mm)	746019501900	690014202000	730016601920	820017501850	842029702650

Core Advantages

Heating System

Rotational infrared heating: Pipes rotate continuously inside the ovens to ensure absolute thermal equilibrium.

Staged temperature zones: Independent multi-stage heating modules safely soften both thick and thin pipe walls.

Alternate oven cycling: Two ovens take turns heating pipes, doubling the hourly socketing throughput.

Pneumatic gate insulation: Sealed oven doors retain internal hot air circulation to significantly reduce energy consumption.

Molding and Intelligent Control

Hardened alloy tooling: Machined from high-grade structural steel to eliminate thermal expansion deformation.

Mirror-polished mandrels: Surface coatings prevent hot PVC sticking and scratch marks.

Siemens PLC synchronized control: Automatically manages all mechanical movements, heating cycles, and cooling times.

Recipe storage and line-speed tracking: Stores parameters for various diameters and syncs with upstream haul-offs to prevent pile-ups or pull stress.

YOUR PARTNER IN PLASTIC PROCESSING

Midtech transforms plastics into possibilitles.

ConticLus today tarlormereebuut our torpliele pluasli processing solutions.

FAQ

What is the primary benefit of choosing a Double Oven Belling Machine over a Single Oven model?

In high-speed small-diameter PVC pipe extrusion (such as 20-63mm conduits), the extruder pushes pipes out much faster than a single belling oven can heat them. This creates a severe line bottleneck. The Double Oven system solves this by having one oven heat Pipe A while the second oven simultaneously heats Pipe B, effectively doubling the socketing speed to match high-output twin-screw extruders perfectly without slowing down the line.

How does the machine handle the difference between U-type and R-type belling?

The machine is highly versatile and handles both types via a quick tooling swap. For a U-type socket (solvent welding joint), a solid straight mandrel is used. For an R-type socket (rubber ring joint), the machine uses an expanding belling core pin fitted with pneumatic or hydraulic mechanical blocks that expand outward once inside the pipe to form the internal rubber ring groove.

How does MIDTECH prevent thin-walled pipes from collapsing or wrinkling during heating?

Thin-walled pipes are highly sensitive to overheating and gravity sagging. MIDTECH addresses this by integrating an automatic internal support air pressure system during the transfer stage, combined with continuous, active pipe rotation inside the ovens. This configuration guarantees that the pipe remains perfectly round and straight without localized buckling or wrinkling before the calibration pin enters.