Light steel structure for building construction gaining popularity.
The basic material for light steel frames is galvanized steel both in sheet or hollow forms. Galvanizing is generally made with zinc and aluminum. Steel frames are used for various purposes in building such as for truss (roof frame/ truss), wall frame, partition and ceiling frames, roofing, and floor frames that the entire building is like prefabricated.
Prefab houses are have been used widely in advanced nations like the United States, Canada and Japan. In Indonesia, prefab houses are not yet popular.
Steel frames and steel roof give houses the impression being modern, simple and practical suitable for minimalist architecture.
Infrastructure buildings of the government like airports, railway stations, sport stadiums and private building like hotels, shopping malls, warehouses and other property buildings like apartments and houses have all use light steel.
Light steel structure industry is also called roll forming structure processing coated metal especially galvalum into profile in the form of sheet and hollow pipes.
The number of producers of light steel structure is quite many and has expanded from time to time. Among the players operating since the 1970s are PT. Bluescope Lysaght Indonesia, PT. Union Metal, and PT. Jaindo Metal Industries.
In the 1980's that was in 1981, PT. Azuma Agung Murni came on line to increase the number of players in the business. Other players such as PT. Cahaya Benteng Mas and PT. Tata Logam Lestari started operation in the 1990-an. PT. Cahaya Benteng started as a trader of coated steel products before building its factory.
In the 2000s or in 2000, PT. Prima Icon Steel joined the players to compete in the market.
The growing number of producers followed growing demand for light steel building materials.
Among he players only PT. Bluescope Lysaght Indonesia has factory integrated with coated metal facory or galvalum factory. PT. Bluescope Lysaght is a subsidiary of the Australian steel giant Bluescope International.
The main markets of light steel frames in the country are Java, Sumatra, and Kalimantan. Producers generally have distributors to handle their marketing. Players like PT. Jaindo Metal Industries and PT. Tatalogam Lestari have their won distributors mainly in large cities in Java, Sumatra, Kalimantan, and Sulawesi.
PT. Tatalogam Lestari has 38 distributors in 27 cities, PT. Jaindo Metal Industries has 29 distributors and. PT. Atap Teduh Lestari has 12 distributors.
Players not having distributors rely on sales agents, which have no binding agreement with producers.
The basic material for roll forming industry is Galvalum. Galvalum is produced from coated steel such as one coated with aluminum, zinc, and silicon. The composition of the coating material is made up of aluminum 55%, zinc 43.5% and silicon 1.5%.
The galvalum could be colorless or painted with a thickness of 0.20 mm bmt-1 mm bmt and width of 762 mm to 1,219 mm.
Indonesia has only one producer galvalum PT. Bluescope Steel Indonesia, which was established in 1995 located in Cilegon, Banten.
PT. Bluescope Steel Indonesia has an annual production capacity of 100,000 tons of colorless galvalum and 54,000 tons of painted galvalum
Among its products are ZINCALUME[R], COLORBOND[R], PELANGI[R], ABADI[R], GEMILANG[R], INTERIOR[R], and INDAH[R].
Table--1 Types and uses of light steel structure in buildings. Types of light steel structure Description Roof Frame/ truss In the form of truss to support tiles. Could be designed at factory, construction site. Wall Frame Profile already has holes for binding with rivets. Partition and Ceiling Frame can be direct fixing or ceiling frame suspended, drop ceiling, universal ceiling frame functions as top cross and metal furring Roofing Constituting corrugated roof sheet functioning as tile roofing Floor frame Floor frame is used for storied houses or stage houses. Prefab house Houses with certain module built like ordinary houses (from one floor to low rise house) with part of the components ready for use from factory Source: Data Consult Table--2 Producers of light steel frames for construction Players Products Brands PT. Bluescope Roof Truss LYSAGHT Lysaght System, SMARTRUSS[TM], Indonesia LYSAGHT SUPERTRUSS[TM] Roofing & LYSAGHT Walling System KLIPLOK[R] 406, LYSAGHT SPANDEK[R] Structural LYSAGHT PEB Product LITE, LYSAGHT BONDEK[R] PT. Tatalogam Steel frames Multitruss, Sakura Lestari Truss, Multi Furing, Birutruss, Taso Steel roofing Multi Roof, Surya Roof, Sakura Roof Multi Sirap, Fancy, Soka PT. Jaindo Steel frame, J-Steel Metal Industries steel roofing PT. Jayaco Steel roofing Alderon Deck Alderon Persada PT Mahkota Steel roofing Megadeck, Kumura Steel roofing Kobe Truss frames Gajah Metal Ceiling panel Kobe Spandrell Industries Ceiling frame Kobe Furring Floor deck Cordeck PT. Prima Icon Roofing Icon Roof, Icon Tile Steel Wall deck Icon Wall Floor deck Icon Deck Ceiling frame Scanfurr Eaves trough Scanline Steel roofing Scantruss frame PT. Union Metal Floor deck Union Floor Deck Roof frames Union Truss PT. Atap Teduh Steel roofing -- Lestari frame , steel tiles Prefab house PT. Cahaya Floor deck AbadiDeck Flooring CahayaDek Benteng Mas Steel frames Cahaya Truss Door frames Cahaya Frame Rainbow Roof, PT. Azuma Steel roofing Arista Roof, Agung Murni Maestro, Decra Oberon, Steel frames Top Truss Players Locations PT. Bluescope Jakarta, Medan, Lysaght Surabaya Indonesia PT. Tatalogam Jakarta Lestari PT. Jaindo Bandung Metal Industries PT. Jayaco Jakarta Alderon Persada PT Mahkota Gajah Metal Medan Industries PT. Prima Icon Bogor Steel PT. Union Metal Bekasi PT. Atap Teduh Bekasi Lestari PT. Cahaya Banten Benteng Mas PT. Azuma Banten Agung Murni Source: Data Consult Table--3 Distribution networks of producers of light steel structure Players Number of Cities distributors PT. Tatalogam 38 Semarang, Purwokerto, Lestari Yogyakarta, Surabaya, Bali, Medan, Batam, Bukittinggi, Pekanbaru, Palembang, Bengkulu, Bandar Lampung, Pangkal Pinang, Belitung, Jambi, Bengkulu, Banjarmasin, Palangkaraya, Pontianak, Samarinda, Balikpapan, Pangkalan Bun, Gorontalo, Manado, Makassar, Kendari, Jayapura. PT. Jaindo Metal 29 Jakarta, Bandung Cirebon, Industries Semarang, Salatiga, Solo, Yogyakarta, Madiun, Malang, Surabaya, Bali, Lombok, Makassar, Palu Batam, Medan, Nias, Tanjung Pinang, Pekanbaru, Pontianak, Balikpapan, Banjarmasin, Samarinda, Palan kara a. PT. Atap Teduh 12 Jakarta, Bandung, Surabaya, Lestari Medan, Palemban , Pekanbaru. Source: Data Consult