Insulation standard

Check it in the standard library, it should be there!

SYT0415-96 Technical specifications for anti-corrosion and thermal insulation of rigid polyurethane foam for buried steel pipelines SH 3010-2000 Technical specifications for thermal insulation of petrochemical equipment and pipelines GBT 16400-2003 Aluminum silicate wool and its products for thermal insulation GB 50404-2007 Technical specifications for rigid polyurethane foam insulation and waterproofing engineering GBT13350-2000 Glass wool for thermal insulation and its products GBT 11835-2007 Rock wool, slag wool and their products for thermal insulation SYT 0407 Specification for surface pretreatment of steel before painting GBT 8923 The corrosion grade and rust removal grade of the steel surface before painting can basically be determined on the forum. See what you can use.

　1 Scope This process standard is applicable to anti-corrosion projects of indoor and outdoor pipelines, equipment and containers. 　　2 Construction preparation 2.1 Material requirements: 　　2.1.1 Anti-rust paint, topcoat, asphalt, etc. should have factory certificates. 　　2.1.2 Diluent: Gasoline, kerosene, alkyd thinner, rosin water, alcohol, etc. 　　2.1.3 Other materials: Kaolin, grade 7 asbestos, limestone powder or talcum powder, glass silk cloth, mineral wool paper, linoleum, kraft paper, plastic cloth, etc. 　　2.2 Main machines and tools: 　　2.2.1 Machinery: spray gun: Air compressor, diamond grinding wheel, rust remover, etc. 　　2.2.2 Tools: Scrapers, files, wire brushes, emery cloth, sandpaper, brushes, cotton filaments, asphalt pots, etc. 　　2.3 Operating conditions: 　　2.3.1 There is a place for stacking pipes, equipment, containers and performing corrosion operations. 　　2.3.2 The construction environment temperature should be above 5°C, with good ventilation and no soot, dust, water vapor, etc. When the temperature is below 5℃, winter application measures must be taken during construction. 　　3 Operation process 3.1 Process flow: 　　 Cleaning and rust removal of pipelines, equipment and containers → Anti-corrosion oil brushing of pipelines, equipment and containers 3.2 Cleaning and rust removal of pipelines, equipment and containers: 　　3.2.1 Manual rust removal: 　　Use scrapers and files to remove oxide scale and casting sand from the surfaces of pipes, equipment and containers, then use a wire brush to remove floating rust from the surfaces of pipes, equipment and containers, then polish them with sandpaper, and finally wipe them clean with cotton wool. 　　3.2.2 Mechanical rust removal: 　　First use a scraper and file to remove the oxide scale and casting sand on the surface of the pipe. Then one person is in front of the rust remover and one person is behind the rust remover, and the pipe is placed in the rust remover to remove rust repeatedly until the true color of the metal is exposed. Before brushing with oil, wipe it again with cotton to remove floating dust on the surface. 　　3.3 Anti-corrosion oiling of pipelines, equipment and containers: 　　3.3.1 Pipelines, equipment and container valves are generally anti-corrosion and oil-brushed according to design requirements. When there is no design requirement, the following provisions should be followed.: 　　 3.3.1.1 Surface-mounted pipes, equipment and containers must be painted with one coat of anti-rust paint first, and then two coats of topcoat before handover. If there are requirements for insulation and anti-condensation, two coats of anti-rust paint should be applied. 　　 3.3.1.2 Apply two coats of anti-rust paint to concealed pipes, equipment and containers. The second coat of anti-rust paint must be applied after the first coat of paint has dried. And the consistency of anti-rust paint should be appropriate. 　　 3.3.1.3 When the anti-corrosion layer is used for buried pipelines, the anti-corrosion layer on the outer wall can be carried out according to the provisions of Table 1-39. 　　When constructing in winter, it is advisable to use rubber solvent oil or aviation gasoline to dissolve 30A or 30B petroleum asphalt. Its weight ratio: Asphalt:gasoline=1:2. 3.3.2 There are two methods of anti-corrosion painting: 　　 3.3.2.1 hand painted: Manual painting should be applied in layers, and each layer should be reciprocated, criss-crossing, and the coating should be kept even, without any leakage or dripping. 　　 3.3.2.2 Mechanical spraying: When spraying, the sprayed paint flow should be perpendicular to the sprayed surface. When the sprayed surface is flat, the distance between the nozzle and the sprayed surface should be 250~350mm. If the sprayed surface is an arc surface, the distance between the nozzle and the sprayed surface should be about 400mm. When spraying, the movement of the nozzle should be uniform, the speed should be maintained at 10~18m/min, and the compressed air pressure used for spraying should be 0.2~0.4MPa. 3.3.3 Anti-corrosion of buried pipelines: 　　The anti-corrosion layer of buried pipelines is mainly composed of cold base oil, petroleum asphalt mortar, waterproofing membrane and kraft paper. 　　 3.3.3.1 The composition of cold base oil is shown in Table 1-40. Types of pipeline anti-corrosion layers Table 1-39 Anti-corrosion layer levels (starting from the metal surface) Normal anti-corrosion layer Reinforced anti-corrosion layer Special reinforced anti-corrosion layer 1 2 3 4 5 6 7 Anti-corrosion layer thickness not less than (mm) Thickness allowable deviation (mm) Cold base oil asphalt coating outer protective layer 3 -0.3 Cold base oil asphalt coating reinforced wrapping layer (sealing layer) Asphalt coating outer protective layer 6 -0.5 Cold base oil asphalt coating reinforced protective layer (sealing layer) Asphalt coating reinforced wrapping layer (sealing layer) Asphalt coating outer protective layer 9 -0.5 Note: 　 1. 2. 3. 4. 5. Use glass fiber cloth as a reinforced wrapping layer and apply a cold base oil sealing layer ； Make anti-corrosion inner wrapping layer, the joint overlap length is 30~50mm, and outer protective layer, the overlap length is 10~20mm ； Unconnected interfaces or construction interruptions should be made into stepped joints with a shrinkage of 80 to 100 mm for each layer. ； The anti-corrosion cold base oil should be applied evenly and the thickness is generally 0.1~0.15mm. ； Cold base oil weight ratio: Asphalt:gasoline=1:2.25. 　 　 　 　 　 　 　 Composition table of cold base oil 1-40 Conditions of use Asphalt: gasoline (weight ratio) Asphalt: gasoline (volume ratio) Temperature above +5°C Temperature below +5°C 1:2.25～2.5 1:2 1:3 1:2.5 The asphalt used to prepare the cold base oil is No. 30A construction petroleum asphalt. Before boiling, break the asphalt into small pieces of less than 1.5kg, put it into a clean asphalt pot, gradually heat up and stir, and keep the temperature within the range of 180 to 200°C (the maximum does not exceed 220°C). Generally, it should be boiled at this temperature for 1.5 to 2.5 hours, until no bubbles are generated, which means the dehydration is complete. Slowly pour the dehydrated asphalt cooled to 100-120°C into the measured unleaded gasoline according to the mixing ratio, and stir continuously until it is completely and evenly mixed. 　　Brush cold base oil on the pipe surface within 24 hours after cleaning it. The coating should be even and the thickness should be 0.1~0.15mm. 　　 3.3.3.2 Mixing ratio of asphalt mardi grease: Asphalt: kaolin = 3:1. The asphalt should be No. 30A construction petroleum asphalt or a mixture of No. 30A and No. 10 construction petroleum asphalt. Gradually add dehydrated asphalt at a temperature of 180 to 200°C to kaolin clay that is dried and preheated to 120 to 140°C, and stir continuously to make it evenly mixed. Then the three technical indicators such as softening point, elongation, and penetration of the asphalt Madi grease are measured. When they meet the requirements in Table 1-41, they are qualified. 　　When applying asphalt mortar, its temperature should be maintained at 160~180℃. When the construction temperature is higher than 30℃, the temperature can be reduced to 150℃. Hot asphalt mortar should be applied over a dry, clean, cold base oil layer, and the coating should be even. If the innermost layer of asphalt Madi grease is applied manually or semi-mechanically, it should be divided into two layers, each layer being 1.5~2mm thick. 　　 3.3.3.3 The waterproofing membrane generally uses mineral wool paper linoleum or glass mesh soaked in cold base oil, which is spirally wrapped on a layer of hot asphalt martyre grease. A gap or overlap of no more than 5mm is allowed between each turn. The overlap length of the front and rear rolls is 80 to 100mm, and the joints are bonded with hot asphalt martyre grease. 　　Asphalt Madi Grease Technical Index Table 1-41 Construction temperature (℃) Transport medium temperature (℃) Softening point (ring and ball method) (℃) Elongation (+25℃) (cm) Penetration (0.1mm) -25～+5 -25～+25 +25～+56 +56～+70 +56～+75 +80～+90 +85～+90 3～4 2～3 2～3 — 25～35 20～25 +5～+30 -25～+25 +25～+56 +56～+70 +70～+80 +80～+90 +90～+95 2.5～3.5 2～3 1.5～2.5 15～25 10～20 10～20 +30 or above -25～+25 +25～+56 +56～+70 +80～+90 +90～+95 +90～+95 2～3 1.5～2.5 1.5～2.5 — 10～20 10～20　 　　 3.3.3.4 When wrapping kraft paper, there should be an overlap of 15 to 20mm between each roll. The overlap length of the front and rear rolls should not be less than 100mm. The joints should be bonded with hot asphalt mardi grease or cold base oil. Kraft paper can also be replaced by polyvinyl chloride plastic cloth or glass mesh tape without cold base oil. 　　 3.3.3.5 When making a particularly strong anti-corrosion layer, the winding directions of the two waterproof membranes should be opposite. 　　 3.3.3.6 When lifting pipes with anti-corrosion coating, soft slings or ropes that will not damage the anti-corrosion coating should be used to avoid damage to the anti-corrosion coating. Before the pipe is lowered into the trench, the trench should be cleaned to make the bottom of the trench smooth and free of stones, bricks, or other debris. If the upper layer is very hard, 100 mm of soft and fine soil should be laid at the bottom of the ditch first. After the pipe is lowered into the ditch, it is not allowed to use a crowbar to move the pipe, let alone push the pipe directly into the ditch. 　　 3.3.3.7 All defects in the anti-corrosion layer, unqualified parts and parts damaged during inspection and trenching should be repaired before the pipe trench is backfilled. When backfilling, it is advisable to manually backfill a layer of fine soil and bury it over the top of the pipe, and then backfill manually or mechanically. 　　4 Quality standards 4.1 Guarantee items: 　　4.1.1 The anti-corrosion layer of buried pipelines should comply with the following regulations: 　　The materials and structure comply with the design requirements and construction specifications. The membrane and the pipe and each layer of membrane are firmly adhered, the surface is smooth, and there are no defects such as wrinkles, hollows, slippage, and loose sealing. 　　Inspection method: Observe or cut open the anti-corrosion layer for inspection. 　　4.1.2 Painting of pipes, boxes and metal supports should comply with the following regulations: 　　The type of paint and the number of coats meet the design requirements, with good adhesion, no peeling, bubbling or missed coating, the paint film thickness is uniform, the color is consistent, and there is no bleeding or contamination. 　　Inspection method: Observation and inspection. 　　5 Protection of finished products 5.1 Pipes and equipment that have been coated with anti-corrosion layers must be separated and must not adhere to avoid damaging the anti-corrosion layer. 　　5.2 Before brushing oil, clean the surrounding environment to prevent flying dust and keep it clean. Do not work in the open in case of strong wind, rain, fog or snow. 　　5.3 For painted pipes, equipment and containers, the paint layer should be protected from freezing, impact, vibration and drastic changes in temperature during the drying process. 　　6 Quality issues that should be paid attention to 6.1 The surface of the pipe is peeling and rusting. The main reason is that the pipes are not completely rusted. 　　6.2 The paint on the surface of pipes, equipment and containers is uneven, with dripping or paint leakage. The main reason is that the brush is stained with too much paint and the oil is not applied carefully. 　　7 Required quality records 7.1 Anti-rust paint, topcoat, asphalt thinner and other materials should have factory certificates. 　　7.2 There should be acceptance records for entry into the site. 　　7.3 Pre-inspection records before anti-corrosion of pipelines and equipment. 　　7.4 Acceptance records after completion.

Are there any standards for thermal insulation?

SH3010-2000 Technical Specification for Thermal Insulation of Petrochemical Equipment and Pipelines, which is the specification for thermal insulation.

Where is the joint of the aluminum skin on the thermal insulation of the steam pipe located on the pipe? Ask experts for advice

Is it at a 45-degree angle of the pipe? Does 45 degrees mean the middle edge is above or below?

6# cuicunzhi Where can I download it? I searched for a long time but couldn't find it.