TPT September 2008

T echnology U pdate

Next generation zinc-coating plant

handling system has pipe dipping screws, pipe positioning and a lifting device. It also comes with a pipe extracting machine with excess-zinc-blowing and water quenching and blowing, and can be designed to fit most existing galvanizing furnaces. Loeco GmbH & Co KG – Germany Fax : +49 208 5898124

Loeco, Germany, is involved in the engineering, manufacture and worldwide supply of industrial plants. The company places special emphasis on environmental precautions and efficient automation for high-speed production and protective zinc- coating of top-quality tube and pipe. Loeco’s state-of-the-art automatic pipe pickling and galvanizing plant has just started production at Tata Steel Tubes Division in Jamshedpur, India. Following modernization of the first galvanizing bath at Tata Steel, Loeco has now supplied a second galvanizing bath, equipped with a double-dip and extracting system. Loeco has also integrated a new pickling line – completely housed-in – with automatic

one-by-one transport of the pipes through degreasing, acid, flux and drying/preheating, to feed the two galvanizing baths. Tata Steel’s new galvanizing plant has been designed for round pipes from ½" to 4", as well as square and rectangular profiles. The plant has a production capacity of 100,000t/year. To save the environment and ensure worker health and safety, acid and zinc fume suction and cleaning are integrated in the plant as well as a flux preparation. In recent years, Loeco has also successfully modernized older pipe-galvanizing plants by installing new handling systems on existing furnaces. This fully automatic pipe

Email : loeco@t-online.de Website : www.loeco.de

Range of seamless steel and LSAW pipe

Established in 1994, Shanghai Yueyuechao Steel Tube Group is a manufacturer of seam- less steel pipe, seamless square/rectangle steel pipe, and large OD LSAW pipe.

Application of innovative technologies – TWP ® (tailor welded plates)

Gräbener Maschinentechnik GmbH & Co KG, Germany, has successfully commissioned a second TWP ® plant (TWP = tailor welded plates). The company is an established manufacturer of machines for SAW pipes, such as plate edge milling machines, bending presses, 3 roll bending machines, and post-bending presses. This system consists of a two-side plate edge-milling machine with integrated laser hybrid welding unit. After two-sided edge preparation, plates with different plate sizes

 Shanghai Yueyuechao is the manufacturer of a range of pipe products The range of the company’s LSAW pipe is Ø 356-1,422mm x 12-60mm, according to the quality standards of API, ASTM, BS, ISO, DNV and JIS. The range of cold drawn seamless steel tube is from Ø 6-426mm x 1-20mm, while the hot expanded tube specification range is from Ø 168-630mm x 4-30mm. The company’s range of seamless steel tubes is designed for construction, fluid conveyance, high/medium/low pressure boilers, petroleum cracking, and high- pressure fertilizer equipment. The products are also utilized as dew point anti-erosion steel tubes, high carbon and chrome bearing steel tubes, cold drawn or cold- rolled precision steel tubes, square/ rectangle seamless steel tubes and various alloy steel tubes (API, ASTM, DIN, EN). In addition to China, the company’s pipes are exported to USA, Germany, Canada, Spain, New Zealand, and Korea. Shanghai Yueyuechao Steel Tube (Group) – China

and plates of different materials are positioned together in one clamping (welding gap 0) to be welded by means of subsequent laser hybrid technology. The idea to join plates with different materials and plate thicknesses into components has been known for a long time and has been achieved recently in the industry. Good examples of application are in the automotive and shipbuilding industry.

 Gräbener’s TWP ® plant (TWP = tailor welded plates)

In the area of shipbuilding, the benefits gained from using this machinery includes higher productivity, fewer required straightening operations, and higher component accuracy. The laser hybrid welding and the tailor-welded-plates principle are innovative methods that reflect state-of-the-art technology. The methods have been reliable in use under stringent production conditions for a number of years. In particular, it is ideal for increasing the productivity and saving material. It is not only suitable for the sections in the automotive and shipbuilding industries but also for plate packing of sections and production of large diameter pipes. Gräbener Maschinentechnik GmbH & Co KG – Germany Fax : +49 2737 989 110 Email : graebmasch@graebener-group.com Website : www.graebener-group.com

Fax : +86 21 66788087 Email : yycit@yyc88.cn Website : www.yyc88.com

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S eptember 2008

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