... 48" (DN15-1200)Wall ThicknessSCH10,SCH20,SCH30,STD,SCH40,SCH60,XS,SCH80,SCH100,SCH120,SCH140, ... drilling, chemical industry, electric industry, shipbuilding, fertilizer equipment and pipeline, structure, petrochemical, pharmaceutical industrySurface Black painting, varnish ... price with excellent quality2.Abundant stock and prompt delivery3.Rich supply and export experience, sincere service4. Reliable ...