Steelformer Co.,Ltd. has been registered as a company since 2005 and is based in Bangkok, Thailand to operate as a subcontractor for construction for renting "slip steel type" called " SLIP-FORM ". We provide many types of services such as, renting SLIP-FORM equipment which also includes SLIP-FORM operation control service to our customers. We also specialize in any type of custom job that you require. 


          With over 25 years of experience in SLIP-FORM SYSTEM OPERATIONS in Thailand and many countries abroad, we have been considered the number one choice for SLIP-FORM SYSTEMS  and are extremely reliable when it comes to getting the job done perfectly. This has lead us to achieve our top position in the special area of SLIP-FORM SYSTEMS and SLIP-FORM SYSTEM OPERATIONS in various types of construction projects and the like. Rest assured, we always deliver the highest quality performance and service to our customers all the way.​ That is why we are number one in the Asian market. 

          Regarding our vast experiences and high quality performance , our company accepts both domestic and foreign customers. Some of our examples in which we specialize in are silos, chimney's or smokestacks for large industrial factories, box lifts, channels of the stairwell for office buildings, building complexes, condominiums and many other special complex projects or requests. This goes to show that we have the highest level of confidence in our work which allows to posses this high efficiency and expertise for SLIP-FORM systems are able to build a required construction design under an appropriated budget within a time saving schedule as well.


Steelformer Co., Ltd. always maintains highly experienced teams of personnel who are expertly trained to handle and undertake all types of SLIP-FORM operations.  Senior staff members of Steelformer Co., Ltd. are available at all times to the developer, architect, engineer and contractor to discuss the applications regarding particular requirements for SLIP-FORM construction and any inquiries they may have.


 Our expert staff will always be at your service and we strongly urge you to make full use of the opportunity when inquiring about or preparing for any type of SLIP-FORM project.

It is essential that sufficient time be given to planning and preparation in conjunction with one of our experienced representatives before the SLIP-FORMING process commences on any project to ensure the best possible results and the highest quality and standards.



For any further inquiries, please do not hesitate to contact us. Our staff will be available to assist you 24 hours a day, 7 days a week, 365 days a year. English service and Thai service available. For English inquires please contact (+66) 2 945 6717-8

          The slip-forming technique was in use by the early 20th century for building mostly silos and grain elevators. James MacDonald, of MacDonald Engineering of Chicago was the chief pioneer in utilizing slip form concrete for construction. His concept of placing circular bins in clusters was patented, with photographs and illustrations, contained in a 1907 book, “The Design Of Walls, Bins, And Grain Elevators”.[4]

          In 1910, MacDonald published a paper “Moving Forms for Reinforced Concrete Storage Bins,” [5] describing the use of molds for moving forms, using jacks and concrete to form a continuous structure without joints or seams. This paper details the concept and procedure forcreating slip form concrete structures. On May 24, 1917, a patent was issued to James MacDonald of Chicago, "for a device to move and elevate a concrete form in a vertical plane". [6]

          James MacDonald’s bin and silo design was utilized around the world into the late 1970s by MacDonald Engineering. In the 1947-1950 period, MacDonald Engineering constructed over 40 concrete towers using the slip-form method for AT&T Long Lines up to 191 ft. tall formicrowave relay stations across the United States.

          Since it’s original creation many decades ago, slip forming has passed several phases of development and today it has become a highly effective mechanized method of concreting. Back in the 1940’s manually operated jacks were beginning to be replaced with hydraulic jacks. Since then, hydraulic systems have drastically developed and have become highly advanced more than ever which help pave the way to the most perfect process of slip forming. 
          Several steps during the process have become entirely automatic which just requires strict supervision and a careful watch of the process.  This does not only mean saving a considerable amount  of time, but also better and more simplified directional control, increased lifting capacity and a steadier and more uniform rising during the process.