Hydraulic Pressure Expander Pipe In Situ Replacement System With Radial Expansion Force And Automatic Threaded Tie Rod Traction For Lightweight Quick-Install

Pipe In-situ Replacement System—Expansion Method

I. Overview

The expansion method for in-situ replacement utilizes specialized expander to generate controlled radial expansion forces within existing pipes. This uniformly enlarges or splits the old pipe diameter while simultaneously pulling new pipe into the expanded cavity. This single-pass process completes pipe rehabilitation by “expanding and replacing” without excavation or additional working pits.

II. Technical Advantages (Compared to Pipe Bursting)

Gentle Force Application: Utilizes radial expansion force rather than axial tension, subjecting manhole walls to minimal reaction forces and causing zero structural damage to chambers.

No Pipe Accumulation: Completely eliminates “pile-up” phenomena, ensuring smooth construction without pipe jamming risks.

Flexible Replacement: Supports both same-diameter replacement and one-size-up pipe diameter expansion (Up-size) to enhance flow capacity.

III. Equipment Features

Main System

• Automatic threaded tie rod traction enables one-button push/pull operation, reducing labor intensity by 70%.

• Lightweight quick-install locking kit at the manhole end allows single-person installation in 1 minute without heavy lifting.

Hydraulic Power Unit

Features automatic directional switching and pressure self-locking with dual overload and leakage protection.

Equipped with manual/automatic integrated solenoid valves and standard wireless remote control, enabling operators to work safely and efficiently away from the shaft opening.

Lightweight Quick-Install Locking Kit at Shaft Entry End

LANGFANG BAIWEI DRILL CO.,LTD

LangFang Baiwei Drill Co.,Ltd located in the center of Beijing, Tianjin and Hebei-Yongqing Industrial Area. Langfang Hebei.

Our company is a drilling tools manufacturing enterprisewith integration of design, geological, well, double wall, oil, auger and other special drilling pipes. And trenchless special drilling tools such as pilot guide bits,swivels, reamers, sub saver, pneumatic pipe rammer, pipe bursting machine.

We have specially invited domestic wellknown expert Mr.zhou shengfeng as our general manager who engaged in the HDD drilling tools and processing technology as technical consultant. A solid research team lays the foundation of product quality, new product development and after-sales service.

We have more than 30 provinces market in China. And our products are exported to India, Australia, Russia, Europe, North America and Middle East etc

"Unity, Progmatic, Self-Reliance, Innovation" Baiweiser adhering to the enterprise spiritto forge a good future for Baiwei.