How many large construction firms in Thaialnd? From my searching I found there are 2 largest companies in the country. Do you think we have more than these 2 companies?
ช. การช่าง
CH. Karnchang Public Company Limited is one of Thailand 's leading general contractors and basic infrastructure developer. It has more than 30 years of successful experiences in construction businesses of large-scale infrastructures, building complex and general civil works. The Company has high capability and potential in the execution of work. It earned some prestige since it was established in
1972. Besides construction businesses, since 1987, the Company has been investing in the government's concession projects in order to expand its operation and generate long-term steady income. With commitment in reliability, highest standards and punctuality, the Company guarantees to deliver the optimum outputs, a strong financial base, and foster long-term sustainable growth to its customers.

Projects
Platinum Fashion Mall
http://www.ch-karnchang.co.th/upload//MODEL-15-10-46%20002.jpg
http://www.ch-karnchang.co.th/upload//MODEL-15-10-46%20003.jpg
Thai International Airways Catering Building Architectural and Structural Works
http://www.ch-karnchang.co.th/upload//catering-02.jpg
http://www.ch-karnchang.co.th/upload//catering-03.jpg
The Construction of Parking Garages and At-Grade Parking Lots
http://www.ch-karnchang.co.th/upload//IMG_0012-1.jpg
http://www.ch-karnchang.co.th/upload//IMG_0005-2.jpg
SET Building (North Park)
http://www.ch-karnchang.co.th/upload//E-010.jpg
http://www.ch-karnchang.co.th/upload//E-012.jpg
Bang Na – Bang Pli – Bang Pakong Expressway
http://www.ch-karnchang.co.th/upload//BANGNA-BANGPLEE-BANGPAKONG_01-B.jpg
http://www.ch-karnchang.co.th/upload//BANGNA-BANGPLEE-BANGPAKONG_02-C.jpg

www.ch-karnchang.co.th

As I know, the big three are Italian-Thai Development, Ch.Karnchang and Shino-Thai Engineering.
But also the often seen name in major construction are Ktech, Rittha, Thai-Obayashi

อิตัลไทย
ITALIAN-THAI DEVELOPMENT
The friendship of Dr. Chaijudh Karnasuta, a Thai, and Mr.Georgio Berlingieri, an Italian, led to the foundation of the Italthai Group, a major Thai construction, trading and manufacturing group. It all started in January 1954 when Mariners Co.,Ltd., a company belonging to Dr. Chaijudh's brother-in-law, signed a contract with the Harbour Department to salvage five ships sunk in the Chao Phraya River. Relying on the technical support of a Japanese salvage company, Dr. Chaijudh counter-guaranteed all the bonds and guarantees required by the contract. When the Mariners Co.,Ltd., failed to salvage the ships, the Harbour Department threatened to cancel the contract and to enforce the bond and counter-guarantee.
At this time Mr. Berlingieri, who was employed by the Archimede Salvage Co.,Ltd., an Italian salvage company based in Rome, having successfully completed salvage operations in Vietnam was looking for work for his company's equipment. He accepted a sub-contract from Mariners Co.,Ltd. to salvage the five ships.
Mr. Berlingieri's company was able to successfully complete the contract and Dr. Chaijudh was released from his contractual obligation.
As a result of this first work together, Dr. Chaijudh and Mr. Berlingieri set up a small oxygen plant to supply oxygen to the salvage operation industry. The company was called Italthai Industrial Co.,Ltd. and is today one of the cornerstones of Italthai Group.

Projects
Suvarnabhumi Airport Hotel
http://www.italian-thai.co.th/images/gallery/img_0597.jpg
http://www.italian-thai.co.th/images/gallery/img_0018-2.jpg
Q-House Lumpini (Sathorn Complex)
http://www.italian-thai.co.th/images/gallery/1.dsc05914.jpg
Suvarnabhumi (Second Bangkok) International Airport Project Passenger Terminal Complex, Packages 2 & 3
http://www.italian-thai.co.th/images/gallery/032-c.jpg
http://www.italian-thai.co.th/images/gallery/21.jpg
Rupsa Bridge Construction, Khulna, Bangladesh
http://www.italian-thai.co.th/images/gallery/rupa2.jpg
Taiwan High Speed Rail Project, Contract C295
http://www.italian-thai.co.th/images/gallery/102_0214_1.jpg

http://www.italian-thai.co.th

As I know, the big three are Italian-Thai Development, Ch.Karnchang and Shino-Thai Engineering.
But also the often seen name in major construction are Ktech, Rittha, Thai-Obayashi
Yep, Shino-Thai is another big one corp.

Please post more project from นันทวัน-Thai Obayashi beside Siam Paragon.

Please post more project from นันทวัน-Thai Obayashi beside Siam Paragon.
OK, I will find more info of นันทวัน-Thai Obayashi.

nice airport hotel.

ไทยโอบายาชิ
Thai Obayashi was established in 1974 by Obayashi Corporation of Japan and four major shareholders, Bangkok Bank, Siam Commercial Bank, the Crown Property Bureau and Metro Group under the chairmanship of Sommai Huntakul.The company actually evolved from a small Obayashi representative office that had opened in Bangkok 10 years previously and supervised the construction of the AIA headquarters.
Since our founding, Thai Obayashi, with the support of our parent company, has served as a pioneer for the Thai construction industry. Our earliest projects include the first pipeline across the Chao Phraya River and Bangkok Bank Silom Road Headquarters, where we introduced the OWS foundation building technology.

Projects
Siam Paragon (Sub-Super str.)
http://www.thaiobayashi.co.th/html/major/show.php?act=popup&id=161&imgact=1&act=current
http://www.thaiobayashi.co.th/html/major/show.php?act=popup&id=161&imgact=2&act=current
Viharnkot
http://www.thaiobayashi.co.th/html/major/show.php?act=popup&id=166&imgact=1&act=current
Marriott Timeshare South
http://www.thaiobayashi.co.th/html/major/show.php?act=popup&id=170&imgact=1&act=current
Siam Commercial Bank Headquarters
http://www.thaiobayashi.co.th/html/major/show.php?act=popup&id=12&imgact=1
The first use of free-standing. gravity soil retaining wall(10m. x 18m.)
comprising cement columns.

Bangkok Bank Headquarters
http://www.thaiobayashi.co.th/html/major/show.php?act=popup&id=2&imgact=1
First large-scale high-rise building.
First large-section bored pile foundation.
First underground concrete diaphragm as soil retaining wall and underground structural walls

Cathay Trust Building ( Former Esso Building)
http://www.thaiobayashi.co.th/html/major/show.php?act=popup&id=1&imgact=1
The first building structure to employ post tension system in Thailand.

Dusit Thani Hotel
http://www.thaiobayashi.co.th/html/major/show.php?act=popup&id=23&imgact=1
The first 20-stories high-rise building in Bangkok.

http://www.thaiobayashi.co.th
I can't find their lastest projects :)

nice airport hotel.
That's such a good place for the next meeting :)

เคเทค
K-TECH Construction Public Company Limited was established in 1997 (as K-TECH Construction & Engineering Company Limited) converting to a public company in February, 2004 prior to listing on the Stock Exchange of Thailand.
The company was established on the eve of the Asian financial crisis and has operated under a diverse range of market conditions. While most sectors of the Thai economy were adversely impacted by the effects of the Asian financial crisis, the construction industry was particularly hard hit and those operating within the industry were required to operate in an environment of intense competition. It is against this background that K-TECH has evolved into one of Thailand’s leading construction and engineering companies

Projects
Central World Tower
http://www.ktech.co.th/mod_comm_project/spic/CentralWorld7.jpg
http://www.ktech.co.th/mod_comm_project/spic/CentralWorld8.jpg
Sukhumvit Centre Point
http://www.ktech.co.th/mod_comm_project/spic/CenterPointSoi64.jpg
http://www.ktech.co.th/mod_comm_project/spic/CenterPointSoi62.jpg
Raja Overseas Trading
http://www.ktech.co.th/mod_comm_project/spic/RAJA1.jpg

http://www.ktech.co.th/

http://www.thaiobayashi.co.th/html/major/show.php?act=popup&id=23&imgact=1
Dusit still looks awesome............

^^^it needs an exterior renovation, I think.

Thanks K.Atom. I saw a lot of Thai-Obayashi Logo in many construction sites or maybe I've got a blurred vision?

Bouygues Thai are probably the largest contractor currently working in the high rise construction market with 12 projects under construction including the Athenee Residence, Athenee tower (office), Empire Place, The Met, Infinity, the Star Estate etc.

http://www.jobtopgun.com/content/filejobtopgun/logo_job/j3073.gif

BOUYGUES-THAI LTD. is a part of the worldwide Bouygues Group, a diversified French company employing over 100,000 people around the world, with core activities in building and civil works. The group's core activities of building and civil works are grouped under Bouygues Construction to which BOUYGUES-THAI LIMITED belongs. In June 1990, BOUYGUES-THAI LIMITED was established, which enabled the Bouygues Group to set up a solid base in the kingdom.

http://www.bouygues-construction.com

for infrastructure works, there are italian-thai development, sino-thai engineering, and ch.karnchang.

and for the building works, there are ritta, bouygues-thai, k-tech, thai obayashi, thai kajima, siphaya, etc.