The pipes standard in accordance with ISO2531,Class K9, L=6000mm,T-Type joint,Portland cement mortar lining acc to ISO4179-95, Zinc (130g/M) + bitumen (70microns) painting accordance with ISO8179, matched all necessary T-type normal rubber gaskets in accordance with ISO4633. Flanged welded pipe from DN80 to DN1600 Both our pipe's quality and price are very competitive in China and we believe that you'll be satisfied with our products' superior quality and competitive price. For more detailed information, please feel free to contact us.