<\/span><\/h3>\n– Before installing the pipe must be cleaned of rust and impurities with a rust brush<\/span><\/p>\n– Use a rag to wipe off the preservative oil both inside and outside the tube<\/span><\/p>\n– Paint to protect and preserve black and galvanized steel pipes<\/span><\/p>\n– Each piping system will be thoroughly cleaned before connecting to the system and equipment. For carbon steel pipe, fill the tube with water after completing the tube leak proof test or cleaning to prevent corrosion.<\/span><\/p>\n– Carefully inspect the pipe and the pipe connection.<\/span><\/p>\n– The pipe will be cut with a cutter. Metal wheel cutters are not accepted.<\/span><\/p>\n– Edges inside and outside the pipe that are rough or sharp will be smoothed. The inner edges must be flat.<\/span><\/p>\n– When not constructing pipes, fittings and terminal valves, they should be temporarily covered to avoid external influences<\/span><\/p>\n<\/span>a, Conventional painting method, using anti-rust coating and finishing paint<\/span><\/span><\/h4>\nConventional painting method, using anti-rust coating and finishing paint<\/span><\/em><\/figcaption><\/figure>\n– Technical features:<\/span><\/p>\n\nGood anti-rust, good adhesion for the next coating.<\/span><\/li>\nThe amount of paint consumed for 1 m2 of product: 100 – 150g ( <\/span>actually depends on the surface to be painted).<\/span><\/em><\/li>\n<\/ul>\n– Using:<\/span><\/p>\n\nSurface preparation of the treated surface should be free of dirt, grease and any other impurities. Clean the oil on the pipe surface by 2 methods: Use gasoline and dry rag to clean the oil on the pipe.<\/span><\/li>\nScaly, rusty: sandpaper, stiff brush.<\/span><\/li>\nPrepared metal surfaces must be painted immediately to prevent re-corrosion.<\/span><\/li>\n<\/ul>\n– Machining method<\/span><\/p>\n\nThe paint bucket must be stirred well.<\/span><\/li>\nUse brush, roller or spray gun (supply pressure: 2 \u2013 4 KG\/cm2).<\/span><\/li>\nSolid paint with solvent DMT2 \u2013 AK; mixing ratio: 5 – 10 %.<\/span><\/li>\nTime allowed to apply the next layer, minimum: 22 hours.<\/span><\/li>\nPaint condition: air humidity not more than 90%.<\/span><\/li>\n<\/ul>\n<\/span>b, Multi-component paint method – special paint<\/span><\/span><\/h4>\n– Technical features:<\/span><\/p>\n\nUse to display color on pipes.<\/span><\/li>\nGood surface protection, good corrosion resistance.<\/span><\/li>\nThe amount of paint consumed for 1m2 of product: 150-200g\u00a0 <\/span>(actually depends on the surface of the material to be painted).<\/span><\/em><\/li>\n<\/ul>\n– Using:<\/span><\/p>\n\nSurface preparation to be painted: <\/span>New material surface:<\/span><\/em> S.AK-N1 anti-rust paint (for black steel pipes) or CXL-WP surface treatment paint (for galvanized steel pipes) dry, clean, dry, free from grease and dirt.<\/span><\/li>\n<\/ul>\n– Processing method:<\/span><\/p>\n\nThe paint bucket must be stirred well.<\/span><\/li>\nUse brush, roller or spray gun (supply pressure: 2 \u2013 4 KG\/cm2).<\/span><\/li>\nSolid paint with solvent DMT2-AK; mixing ratio: 5-10 %.<\/span><\/li>\nMinimum 2 coats required. Each class is spaced 1 hour apart.<\/span><\/li>\nPaint condition: air humidity not more than 90%.<\/span><\/li>\n<\/ul>\n<\/span>2. Measures for construction and installation of fire-fighting pipes<\/span><\/span><\/h3>\n\nThe cutting method is carried out in accordance with each type of material and the cuts are exactly as shown in the drawings.<\/span><\/li>\nUsing a specialized cutter to ensure the length of the pipe, the cuts according to the requirements.<\/span><\/li>\nUsing eye protection, the cutter ensures that there is a guard to prevent chips and fire from being thrown out causing an accident.<\/span><\/li>\n<\/ul>\n<\/span>a, Cut<\/span><\/strong><\/span><\/h4>\n\nWhen cutting does not deform the tube and the guard, the pipe cross-section must be smooth and perpendicular to the center of the pipe (or bevel if necessary) in order to make a joint.<\/span><\/li>\nPipe cutting tools must be suitable and ensure the required cutting length.<\/span><\/li>\n<\/ul>\n<\/span>b, Pipe thread:<\/span><\/strong><\/span><\/h4>\nConstruction and installation of pipe thread<\/span><\/em><\/figcaption><\/figure>\nPipe thread details from 25A-50A<\/span><\/p>\n\u2013 Straighten the pipe and clean the Bavia before threading<\/span><\/p>\n\u2013 For pipes with diameter D<= 50, the minimum thread length reaches 20-25mm<\/span><\/p>\n