Shenyang artificial lake anti-seepage, process flow Kaysen Steel Industry Co., Limited is a China manufacturer and supplier of Stainless Steel Sanitary Tubes/Pipes, Sanitary Welded Tubes , Sanitary Seamless Pipes ,ASTM A249 Stainless Steel Tubes,ASTM A269 Stainless Steel Tubes,ASTM A270 Stainless Steel Tubes,DIN 11850 Stainless Steel Pipes,ASTM A554 Decorative Stainless Steel Pipes.We offers tubes to you with superial quality Stainless Steel Sanitary Tubes/Pipes,Sanitary Welded Tubes,Sanitary Seamless Pipes,ASTM A249 Stainless Steel Tubes ,ASTM A269 Stainless Steel Tubes,ASTM A270 Stainless Steel Tubes,DIN 11850 Stainless Steel Pipes,ASTM A554 Decorative Stainless Steel Pipes. We provide for quality food processing, high surface quality ensures the necessary hygienic or sanitary safety. Our division for surface treatment guarantees optimal finish according to your requests.If you have any questions or inquiries please feel free to contact us. Stainless Steel Sanitary Tubes/Pipes Stainless Steel Sanitary Pipes,Stainelss Steel Sanitary Tubes,Sanitary Welding Tubes,Sanitary Seamless Tubes Kaysen Steel Industry Co., Ltd. , http://www.chinasanitaryvalve.com
â—Basic excavation â—Do the lake bottom mortar protection layer (H20-30mm)
â—Slope cutting, compacting and leveling â—Composite geomembrane and vertical retaining wall paste
â—The base surface is leveled, cleared, and the process is handed over. â—The sealing of the underwater water pipe is stopped.
â—Composite geomembrane laying and welding â— Process handover
â— Welding and repair quality acceptance â— Completion acceptance
Second, the project overview
1. The highest design water level: about 0.6m.
2. The total area of ​​waterproof construction is about 800m2.
3, ceramsite brick masonry retaining wall.
4. There is a collapse pit under the water.
Third, the main waterproof material
1. Composite geomembrane coil, the specification is: 50*4m; 150g/m2/0.5mm/150g/m2.
2, GB rubber water stop.
Fourth, the basic conditions
1. After the foundation shape and excavation, the slope shall be cut, leveled or compacted. Displacement and backfilling of disturbed soil should be layered and sprinkled with water and compacted, each layer thickness ≯400mm.
2. Remove materials with punctured hidden dangers such as bricks, stones, and tiles; glass and metal chips; branches, plant roots, etc.
Clean up the obstacles in the field and provide the necessary laying conditions.
3. The surrounding retaining wall, pump pit, bridge foundation, and the installation and reservation of the underwater nozzle must be completed before the construction of the composite geomembrane.
V. Welding and laying technology
1, welding technology
1 weld bead lap width: 80~100mm; natural pleats of plane and vertical plane are: 5%~8%; reserved expansion and contraction: 3%~5%; residual amount of scrap: 2%~5%.
2 hot-melt welding working temperature 280 ~ 300 ° C; travel speed 2 ~ 3m / min; welding form is double weld.
3 damage repair method, cut the same material, hot melt adhesive, polyethylene seal.
4 There is no imitation connection at the weld bead, and mechanical stitching is used.
5 The sealing of the underwater nozzle is stopped by GB rubber sealing strip, metal bandage and anti-corrosion treatment.
2, laying technology
1 The laying and unwinding direction of the composite geomembrane is carried out from E to W or from W to E. The height of each laying length, including the height of the water retaining walls on both sides, is completed once.
2 laying sequence, from the channel axis to the S, N sides.
3 Construction process, first make the mortar protective layer (20-30mm) of the composite geomembrane at the bottom of the lake, and then do the paste with the vertical retaining wall.
4 Combination process of composite geomembrane and retaining wall. The adhesive is applied to the adhesive surface of the composite geomembrane and the retaining wall, and the drying is allowed to stand for about 5 minutes, and then pasted, extruded, and flattened. The adhesive is made of asphalt latex paint, cement and water. After the paste is completed, the nails are anchored above the water level line and waterproofed and treated.
Sixth, quality acceptance
1. The material and construction of composite geomembrane implement the national standard of polyethylene geomembrane and composite geomembrane issued by the State Bureau of Quality and Technical Supervision.
2, construction quality acceptance, divided into construction unit self-inspection, contractor sampling and other content.
3, welding quality inspection, using "inflation pressure method", damage repair using "visual measurement method", inflation pressure detection index is 0.06Mpa.
4, the quality acceptance process includes, the process handover procedures, completion acceptance and other content.
5. Normal leakage of artificial lake: ≤15mm/24h (including seasonal evaporation loss).
Seven, construction progress
1. Daily effect, one unit per day according to the construction area of ​​2000~2500m2.
2. The planned construction period is 3 days.
Eight, suggestions
1. Strengthen the protection and management of composite geomembrane products, improve the waterproof awareness of relevant construction personnel, and put into normal operation on time to ensure the quality of the project. It is of great significance.
2. It is recommended that the contractor notify and dispatch a special person to supervise. The construction personnel related to the waterproof material find that the composite geomembrane is damaged, and it is necessary to promptly notify the waterproof construction personnel to repair it.
3. The composite geomembrane shall be protected from oil stains, otherwise the bonding strength will be reduced. Storage and Protection "See Introduction to Geomembrane Construction Methods".
4. It is recommended that the project pay attention to the following links:
1 After the composite geomembrane is welded to the finished product, the lake bottom mortar protective layer must be made first.
2 The bridge foundation is waterproof, and the steel-penetrating welding method is adopted. The mortar protective layer is used to prevent the quality hazard caused by the electric welding.
3 The combination of composite geomembrane and wall surface shall prevent the appearance of large-area hollow drums.
Http://news.chinawj.com.cn Submission:
Sanitary Tubes Specification:
Standard: A270 3A,DIN11850,A249,A269,A554
Grade: SS304(1.4301), SS304L(1.4307),SS316(1.4401),SS316L(1.4404)
Size:
â–º Round tubes and pipes with an OD of 12 to 219, 10 mm and a wall thickness of 1 to 3.9 mm.
â–º Square tubes with a section of 10x10 to 120x120 mm and 1 to 5 mm thick.
â–º Rectangular tubes with a section of 20x10 and 180x60 mm and 1 to 6 mm thick
Surface & Roughness
► CC/BC – inside and outside pickled
► CD/BD – inside pickled, outside polished
â–º Inside polished & Outside polished
Length: 6m or customer-made.
Application: Boiler, heat exchanger, construction, hygienic, pharmacy, power, petrochemical,