Rotary Drilling Rigs Bore
Piles For Cement Plant
Dua Fat Foundation is using four Liebherr rotary drilling
rigs to complete the foundations for a new cement plant
near Hanoi in an exceptionally short time-scale.
Four Liebherr LB series rotary drilling rigs, including
a recently delivered LB 36, are being used to prepare
the foundations on an equipment-intensive site for a
new cement plant in Ha Nam province, in Vietnam.
The rigs are being used by Dua Fat Foundation Joint
Stock Company, which has three LB 28 units on rental
agreements from other contractors, and has recently
purchased the LB 36 new via Liebherr-Singapore.
The cement plant is being built by Thanh Thang
Cement Corporation and is the company’s second plant
in Thanh Nghi, about 120 km from Hanoi.
The new plant will have 2.3 million tonnes per year
of cement production capacity, and is expected to be
operational by 2017.
Dua Fat was established in 2009 and the company’s
founder and chief executive, 38-year-old Le Duy Hu’ng,
says that initially Dua Fat had used two other brands of
rotary drilling rigs, but then used rented Liebherr rigs
on other projects and decided to invest in their first
“Our business is still new and growing fast, and
we are building a reputation for high quality
“Purchasing a Liebherr rotary drill rig
demonstrates to our clients that quality and per-
formance are the basis of our service.”
says Mr Hu’ng.
Mr Hu’ng says the foundation work for the new plant
is on an extremely tight schedule, with only three months
allocated to bore a total of 1,805 piles.
“This is why we have moved so many rigs onto
the site. The soil is complex but is mostly
sediment with a high water table. We are drilling
down to the limestone layer, and the pile depths
vary from 25 m to 45 m.
“Because of the tight schedule we have to
drill three piles each day with each of the
Liebherr rigs. We estimate the four Liebherr rigs
will drill at least 40 % of the borings, and they
are working mainly on the deeper piles.”
Mr Hu’ng says that the pile diameter varies according
to the construction plan but the majority are of 1000
With the new cement plant required to be opera-
tional by 2017, Dua Fat is working 20 hours per day to
complete the foundations contract on time.
Second Largest Rig in Range
The LB 36 is the second largest rig in the Liebherr prod-
uct range, with a maximum torque of 410 kNm and
capacity to drill to depths of 88 m.
Designed for optimised drilling applications, all com-
mon drilling methods can be executed with the LB36
including, for example, Kelly drilling, continuous flight
auger drilling, drilling with partial or full displacement
tools, double rotary drilling and soil mixing.
A comparatively compact design allows the rig to be
transported to the site quickly with fast set-up times.
The Liebherr-Werk Nenzing Hanoi representative
office services the Liebherr rigs.
Contractors World International Vol 7 No 1