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Product 05 - Pipe Roofing System

Pipe Roofing
System

Advanced casing-advancing systems for complex geotechnical drilling - including forepoling, canopy tubes, and tube umbrella systems engineered for dependable performance across all ground conditions.

Kridhan Pipe Roofing System
Technical Documents

Download Product
Brochure

Get detailed product specifications, technical data sheets, and application guidelines in PDF format.

Product Specification Brochure
Forepoling Pipe System
PDF
Overview

What Is the Pipe
Roofing System?

For complex geotechnical drilling requirements, Kridhan Infratech offers advanced case-advancing systems that deliver dependable performance across various construction methods such as forepoling, well drilling, and anchoring. These drilling systems employ casing tubes that penetrate overburden layers in an umbrella pattern and are later grouted to ensure stability.

The casing solution allows for smooth and efficient installation of casing tubes into the ground while operating with low torque requirements. Compatible with both top-hammer jumbo rigs and DTH drilling rigs.

Kridhan Infratech also supplies a full suite of forepoling drilling tools, including pilots, ring bits, casing tubes, starter casings, drill rods, grouting plugs, and shanks.

Forepoling Canopy Tubes Tube Umbrella Top-Hammer DTH Rigs
Pipe Roofing System Overview
Where It's Used

Applications

Kridhan Infratech Casing Systems are engineered to meet the requirements of major ground drilling works.

01
Tunnelling

Forepoling and anchoring operations

02
Foundation

Piling and underpinning projects

03
Geotechnical

Site investigation and geotechnical studies

04
Well Drilling

Water and geothermal well drilling

05
Directional

Horizontal and directional drilling

Why Choose It

Features &
Benefits

Designed for productivity, reliability, and cost-efficiency across all geotechnical drilling scenarios.

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01

Fast drilling with simple operation

02

Trouble-free and reliable drilling

03

Straight and accurate holes

04

No unnecessary soil flushing

05

Cost-effective system

06

Low investment and operating costs

07

Higher productivity per time unit

08

Reduced setup time

09

Extended pilot bit life

Specifications

Technical
Specification

Pipe Roofing System
Model
KFS 76 (E)
KFS 76
KFS 88 (E)
KFS 88
KFS 114 (E)
KFS 114
KFS 139
Diameter of Pipe (mm)
76.1
76.1
88.9
88.9
114.3
114.3
139
Thickness of Pipe (mm)
5.60
6.00
6.50
8.00
6.50
8.00
10.00
Pilot Bit Thread
R32
R32
T38
T38
T38
T38
T45
System Components

Kridhan Infratech's
System

(114 as illustration)
KFS114 System Diagram
1
KFS114 Pilot Bit C38
2
KFS114 Ring Bit Assembly & Starter Casing
  • Steel casing 114 including KFS114 ring bit assembly
  • 1 side male threaded, L=3000mm - 6000mm with grouting holes + valves
3
Extension Casing
  • Steel casing
  • 2 side male-female threaded, L = 3000mm - 6000mm
4
Extension M/F Rod C38 - round 39 C38, L=3050mm or 3660mm
Optional
5
Grouting Plug (end cap)
6
Shank adapter for needed rig/drift
System Overview

Pipe Roofing System

Pipe Roofing System Process Diagram
Casing / Drill Tube Grouting Holes Drill Rod Pilot Bit Casing Shoe Ring Bit Assembly
Casing Tubes

Each pile typically consists of multiple steel casing sections measuring 1.5-3 metres, connected via threaded joints and equipped with injection valves for grouting. Standard casing diameters include:

76.1 mm 88.9 mm 114.3 mm 139.7 mm
Casings, Drill Tubes
Casings, Drill Tubes
Preparation

Kridhan Infratech ring assemblies are factory-welded to the starter casing, complete with casing shoes, in accordance with approved welding standards:

En499: E42 6B 42 H5
AWS/ASME: SFA-5.1/E7018-1
DIN8529: ESY 42 76 Mn B
Grouting Plug (End Cap)
Grouting Plug (End Cap)
Required Equipment

The system is compatible with most standard drill rigs for tube umbrella drilling. Typically used with jumbo drills, operator basket booms, or auxiliary lifters. Supports both Top Hammer and DTH drilling methods.

Get in Touch

Specify Pipe Roofing System
for Your Project

Our engineering team will help you select the right casing configuration and drilling setup for your geotechnical requirements.