TPI January 2009

developments products & Maximum silence in waste systems Sanitary fixtures, along with the relative water discharge systems, contribute to the generation of disagreeable noise.

Stainless steel pipes

Shanghai Baoyuan Iron & Steel Co, Ltd is a subsidiary company of Baosteel Group, and specialises in stainless steel pipes. The company can supply products made from Baosteel materials including 321, 304, 304L, 309, 309H, 316, 316L, 316Ti, 2205, 2520, 317L, 347, 904L, 310S, GH800, GH3030, 1Cr25Ni20, NCF600, Hastelloy and Monel. The pipe diameter range is from 3 to 1,220mm and the wall thickness range is 0.2-150mm. The company can produce pipes of 150m in length (diameter from 3 to 20mm), and can also supply square pipe, rectangular pipe, polished pipe, round steel, plate, coil and fittings. info@baoyuansteel.com www.baoyuansteel.com Stainless steel flexible braiding hose Hydroflex Pipe Pvt Ltd, India, is a manufacturer and exporter of stainless steel flexible braiding hose ranging from ¼" to 8" in AISI 304, 316, 316L and 321 grades, with any type of mounting fittings as per customers’ specifications. The company manufactures flexible hoses with SS wire braided in type ‘B’ flex and ‘C’ flex. ‘C’ flex is stainless steel annular convoluted hose, a very close pitch hose for a high degree of flexibility and high working pressure, suitable for exacting areas of flexibility and vibration. Hydroflex is ISO 9001:2000 accredited by Det Norske Veritas (DNV), and its products conform to BS6501 Part I, approved by Germanischer Lloyds. Shanghai Baoyuan Iron & Steel Co, Ltd – China

The proper design of waste systems and appropriate technical means help reduce the extent of the problem.

Silere is a soundproof waste system designed by Valsir, consisting of a range of pipes made of a special material that ensures maximum silence in waste systems. The system possesses soundproofing properties that have been confirmed by the Fraunhofer Institut fur Bauphisik in Stuttgart, Germany.

In terms of soundproofing, Silere is claimed to exceed cast iron and to be superior to polypropylene. The Silere pipes and fittings are equipped with sockets, with a push-fit connection system that allows a rapid installation. Another advantage of installation is that no special or expensive tools are required. This factor is importantwhencalculating the total cost of the work and the materials. The

Valsir’s Silere soundproof waste system S S

push-fit connection system, which uses rubber seals, not only reduces installation times, but allows vibrations in the piping system to be reduced. This is not possible with other connection techniques, such as welding. The soundproofing properties of Silere are the result of several factors, including the particular connection system, the elevated wall thickness and the material employed for the fabrication of the pipes and fittings.

It is known that materials with a large thickness are not easily prone to vibrations, thanks to their elevated moment of inertia.

The material used possesses a polymeric base of copolymer polypropylene, and is therefore impact resistant at low temperatures.

The mineral load, the colourant and the flame retardant additive (class B2 in compliance with DIN 4102) are added to this in suitable percentages.

Silere pipes and fittings are available with external diameters of 58, 78, 90, 110, 135 and 160mm, in lengths from 150 to 5,000mm. Connections can be made with any other type of waste system (cast iron, HDPE, PP, etc) with the use of suitable reducers and special pieces. The material used to make Silere is acid and alkali resistant, and impedes the formation of scale thanks to smooth internal surfaces. It is heat resistant up to a temperature of 95°C. Silere is suitable for use wherever acoustic insulation is of fundamental importance, in buildings such as hospitals, hotels, offices, apartments and all areas that need to be protected from noise.

Hydroflex Pipe Pvt Ltd – India info@hydroflexpipes.com www.hydroflexpipes.com

Valsir SpA – Italy valsir@valsir.it • www.valsir.it

28

Tube Products International January 2009

www.read-tpi.com