News

News
Importance of Tungsten Carbide in Pipe Jacking Cutters
Importance of Tungsten Carbide in Pipe Jacking Cutters
21 January 2021

In pipe jacking, friction occurs on the cutter face where the actual cutting of rocks, concrete and soil takes place. This means high strength and abrasion-resistance are key properties we should always look for in our selection of cutters.

1. Hardness

Second only to diamond, tungsten carbide has a ranking of 9 on the Mohs’ scale of hardness, while diamond is at 10. It is able to withstand abrasive wear and tear up to 100 times longer than steel.

2. Robust strength even at high temperature conditions

With a high melting point of about 2870°C, tungsten carbide is able to retain its strength and ...

A quick guide to Automatic Bentonite Injection System (ABIS) for pipe jacking
A quick guide to Automatic Bentonite Injection System (ABIS) for pipe jacking
19 November 2020

Traditional method

In pipejacking, an important factor of efficient and successful jacking is to reduce pipe friction. This is done by manually adding bentonite into the annular space between the outer pipe surface and the ground.

Challenges

The amount of bentonite added is based on estimation, which often leads to wastage or under supply. Also, as pipe jacking machines now cover longer jacking spans of up to 500-700m per span, this manual lubrication process becomes increasingly tedious and labour-intensive.

To further improve worker safety, government authorities have rece...

Ever wondered if treating your own slurry is worth it?
Ever wondered if treating your own slurry is worth it?
08 October 2020

For those in the bored piling or pipe jacking industry, we would be familiar with the truckloads of drilling mud produced daily. Depending on the volume of excavated mud, disposal costs can sometimes range between $1,000 to $3,000 per day.

In the next 20 years, infrastructure development will continue to be a key area of investment by the government. It would be worth taking a closer look at how managing your own slurry can help to maximise work efficiency and reduce operating costs in the long run.

A typical slurry management system consists of a Desander and a Decanter Centrifuge, which work together in creating a sustainable cycle of slurry and clarified water onsi...

RASA DHD1200 for Sengkang West water pipeline construction
RASA DHD1200 for Sengkang West water pipeline construction
10 September 2020

As the Covid-19 situation stabilizes in Singapore, we are excited to see most of our clients’ projects back to work.

This week, our client Sheng Keong Construction has started jacking works for a new water pipeline construction at Sengkang West Road. The RASA DH1200 machine is designed for normal soil excavation and pipe diameter of 1200mm.

JK&T is the official distributor for RASA in Singapore, Malaysia and Hong Kong. We have a local team of engineers in Singapore to provide commissioning, servicing and troubleshooting support for our clients’ projects. Find out more here or drop us an email at e...

RASA DHD1500 for new sewers at Changi East Area
RASA DHD1500 for new sewers at Changi East Area
15 July 2020

Ready to tackle hard soil for new sewers at Changi East Area, Singapore, this RASA DHD1500 pipe jacking machine comes with a cutter disk of rollers, shell bits and cutter bits for thorough excavation. A separate cutter disk is also included in the shipment for another jacking span, but fitted with cutters for sandy clay ground.

The DHD model is a divide type where the machine can be split into smaller sections for it to be retrieved from a small arriving shaft.

Having sold more than 1,200 machines across the world, you can depend on RASA’s expertise to craft a solution that best fits your project requirements, regardless of ground condition.

JK&T is the off...

RASA DHL1350 for long distance jacking
RASA DHL1350 for long distance jacking
06 July 2020

Installed with cutter disks for hard soil, this pair of RASA DHL1350 has just arrived in Singapore and will be performing sewer diversion works as part of Singapore’s upcoming new MRT line construction.

The DHL machine type is designed to accomplish long distance jacking, typically 300-1000m in 1 span. It comes with an inspection hatch for easy replacement of cutters - an essential feature for optimal excavation performance in long distance jacking.

With over 30 years of experience in pipe jacking, JK&T believes in finding the right machine type based on your project requirements, and having a reliable local support team for after-sales servicing and troubleshooting....

We are digital-READY!
We are digital-READY!
24 June 2020

In navigating this post-pandemic world, JK&T is pleased to share that our digitalisation tools are in place to support your online purchases and provide contactless delivery.

Let's break it down. So what does this mean for you as a CUSTOMER?

1. Instant Quotation

With product description and pricing available on our e-store, you will no longer have to wait for quotation via emails.

2. Fast and Convenient

Browse anytime, anywhere. Once you have submitted an order, our team will contact you within 2-3 hours for order verification.

3. Free Contactless Delivery

We ensure your safety through contactless delivery. Self-c...

What is the role of Decanter Centrifuge in slurry management?
What is the role of Decanter Centrifuge in slurry management?
13 May 2020

Apart from achieving water for safe disposal, construction companies often find that treating slurry at work sites can also provide a sustainable supply of clarified water for reuse onsite, thereby reducing transport and disposal costs in the long run.

Slurry typically consists of rocks, sand, silt and other fine particles. To obtain clarified water for reuse or disposal, these solid particles must be removed systematically. First, a Desander will remove the larger particles of up to 50um (e.g. rocks, sand, silt). The remaining slurry will then need to be fed into a Decanter Centrifuge to remove the finer particles of 5-50um (e.g. fine silt, clay).

How ...

RASA DHD900 for hard soil and rocks
RASA DHD900 for hard soil and rocks
05 May 2020

This DHD900 pipe jacking machine for pipe OD of 1200mm is specially built with 2 different cutter disks for Aik Leong Plumbing Construction's upcoming pipe diversion projects in Singapore, each with different ground conditions.

First, the normal cutter disk as installed on the DHD900 will be used for excavating hard soil in an LTA sewer diversion project. Upon completion, it will then be replaced with the rock cutter disk for excavating through rock conditions at Pasir Panjang Road / West Coast Drive area, as part of the Deep Tunnel Sewerage System (DTSS) Phase 2 project.

Machine inspection was done earlier in March and machine has arrived in Singapore. Pipe jacking w...

Pipe jacking: A technology breakthrough in underground construction
Pipe jacking: A technology breakthrough in underground construction
20 April 2020

Pipe jacking, also known as microtunneling, has proven to be a real technology breakthrough in underground construction and it is apparent in its increasing popularity among contractors worldwide over the past 30 years.

In essence, pipe jacking is a trenchless method of installing pipelines underneath roads, buildings and more, with minimal disruption to the surface and reduced downtime on its surrounding environment. Apart from manhole works at both ends of the pipeline where the jacking machine is lowered and later removed, most of the works take place beneath the surface.

Based on factors of environmental sustainability and cost savings alone, pipe jacking far outw...

RASA DH1800 for Hong Kong client - Yee Hop Engineering
RASA DH1800 for Hong Kong client - Yee Hop Engineering
24 March 2020

Amidst this COVID-19 situation where travelling is limited for everyone’s safety, we know we can always count on our RASA suppliers in Japan.

Here’s the inspection done by RASA on behalf of our Hong Kong client – Yee Hop Engineering, for the Sai Sha Road Widening Works. The DH1800 machine is all set to go!

Visit our RASA page for more information.

...
What makes polymer concrete an ideal choice for jacking pipes?
What makes polymer concrete an ideal choice for jacking pipes?
03 March 2020

The benefits of trenchless pipeline installation over open-cut methods have been widely recognised, but how sure are we about the end product that's supposed to perform the rest of the job for many decades to come?

In recent years, polymer concrete pipes have become widely adopted in the industry, largely due to its clear advantages over traditional concrete and vitrified clay pipes. Let’s look at some of these factors:

High Strength

  • First of all, polymer concrete pipes have high compressive strength that can withstand large jacking forces and external ground pressure.

Highly Corrosion-Resistant

  • Being highly r...
RASA DH2500 pipe jacking for hard soil
RASA DH2500 pipe jacking for hard soil
02 March 2020

The team visited RASA factory in Fukuoka, Japan, for another machine inspection with Kingview Engineering! Designed for hard soil conditions, this RASA DH2500 machine is specially built to perform pipe diversion works as part of the Deep Tunnel Sewerage System (DTSS) Phase 2 project.

JK&T Equipment specialises in providing microtunneling equipment to civil engineering companies in Singapore, Malaysia and Hong Kong. Contact us at 6904 5833 or enquiries@jktgroup.com.sg for more information.

...
Slurry management gaining popularity among pipe jacking players
Slurry management gaining popularity among pipe jacking players
04 February 2020

Slurry management is gaining popularity among pipe jacking operators as it provides cost savings and efficiency from treating slurry onsite. For most pipe jacking sites, JK&T recommends a combination of a Desander for separation of large solids and a Decanter Centrifuge to further remove fine solids prior to disposal.

JK&T offers a wide range of Desanders and Decanter Centrifuges, and we can customise our slurry management solutions based on your project needs. Contact us for further discussion at 6904 5833 or enquiries@jktgroup.com.sg

...