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Metal maintenance

GermanyHannover and Lower Saxony
  1. HARTMANN VALVES GMBH

    Germany

    As one of the leading manufacturers of ball valves, pig valves and wellheads, Hartmann Valves is active in the oil, natural gas, petrochemical, power plant technology, geothermal and renewable energy sectors all over the world. Design, assembly and tests are carried out exclusively at the German plants. Designed on a customer-specific basis, Hartmann high-performance fittings are suitable for temperatures ranging from -200 to +550 °C, pressure levels up to 700 bar as well as for up to 200, 000 switches a year and can withstand aggressive media such as oil, natural gas, sour gas, syngas, oxygen, hydrogen, helium, steam, thermal water, coal dust, mud, slag & ash, polymers, cellulose as well as abrasive and degreasing media. The pure metal seal system is especially durable, long-lasting and low-maintenance. Our API 6A-conformant wellheads and subsea trees are equipped with metallic sealing ball valves and have been successfully in use for decades.

  2. LÜHR FILTER GMBH & CO. KG

    Germany

    LÜHR FILTER is a family business which operates worldwide with over 75 years of practical experience in the development and construction of air purification systems. Our distribution range includes every component, from gas absorbers to chimneys. We also offer engineering, service and maintenance services. Our global references in a range of areas, from incineration plants to power generation, in the iron and steel industry, the non-ferrous metals industry, the cement, lime and gypsum industry, the ceramics industry, the aggregate and asphalt industry and the chemical industry are proof of our performance.Our products include: Waste air cleaning, dust extraction systems, ready-made filter media, filter sleeves, sleeve filters, heat exchangers.