Shijiazhuang cast iron drainage pipe has excellent quality, Tangshan bridge drainage pipe specifications are complete

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　　Shijiazhuang cast iron drain pipe, cast iron drain pipe with excellent quality, Tangshan bridge drain pipe with complete specifications

　　From the appearance, it can be divided into two types: circular and rectangular. The total length of the circular drain pipe is 420mm, the length of the straight pipe is 320mm, and the steel sleeve and grille cover are 10mm in total. The outer diameter of the horn mouth is 215mm, the inner diameter is 161mm, and the inner diameter of the circular drain pipe at the bottom is 100mm. The individual weight ranges from 8kg to 18kg, and the price of the circular drain pipe varies depending on the specifications; The commonly used rectangular drain pipe is 600mm, with an outer diameter of 170mm and an inner diameter of 140mm. The inner diameter of the bottom outlet is 100mm! The circular bridge drain pipe is a relatively complete cast iron drain pipe. The inner diameter of a circular drainage pipe is generally 0.10-0.15m, and the lower end of the pipe should extend at least 0.15-0.20m below the bottom of the roadway slab to prevent moisture from seeping into the surface of the main beam ribs.

　　In December, the domestic steel market officially entered the traditional off-season of demand, and the actual downstream procurement demand significantly weakened. Against the backdrop of policy induced production pressure, the release of output by steel production enterprises was significantly constrained. According to research data from Lange Steel Network, the blast furnace operating rate of 100 small and medium-sized steel enterprises in China in the first two weeks of December 2021 was 70.7%, a decrease of 1.1 percentage points from November.

　　From the perspective of crude steel production in key large and medium-sized steel enterprises, the daily average crude steel production of large and medium-sized steel enterprises shows an initial increase followed by a decrease, but the cumulative production is still in a downward trend. According to statistics from the China Iron and Steel Industry Association, the cumulative daily crude steel production of key steel enterprises in November 2021 was 1.7325 million tons, a month on month decrease of 5.18% and a year-on-year decrease of 18.25%.

　　At present, the off-season effect of the domestic steel market is becoming apparent, and the impact of cold weather on project progress is becoming more apparent. The impact on building materials demand is also more significant, and the demand for manufacturing steel has slightly improved driven by the recovery of export orders. The regional production restrictions for autumn and winter have been implemented, and the release of production capacity in northern regions is significantly restricted. However, in southern regions, the relaxation of power restriction policies and the driving force of regional demand have increased the release of production capacity. At the same time, due to the significant decline in coke prices in the early stage, the profits of steel mills have improved and their willingness to release production capacity has been strengthened. Therefore, steel production at the end of the year will remain low and may increase compared to the previous period, while the year-on-year decline is still significant. According to estimates from the Lange Steel Research Center, the daily crude steel production in China in December 2021 may be around 2.4 million tons, with key large and medium-sized steel enterprises expected to maintain a crude steel production of around 1.8 million tons.

　　The main performance characteristics of drainage pipes are as follows

　　1、 Water release property

　　The orifice is located in the valley, and due to the bidirectional interaction between the wave crest and the filtering fabric, the orifice is not easily blocked, ensuring a smooth permeable system.

　　2、 Corrosion resistance

　　Compared to soft spring drainage pipes, plastic is less prone to rusting.

　　3、 Economic type

　　Compared with other drainage pipes of the same diameter, its selling price is lower.

　　Cast iron drain pipes are suitable for piping engineering under various conditions. The horizontal and vertical drainage methods of cast iron drain pipes include 1 longitudinal drainage hole. Vertical drainage is suitable for paving structures with waterproof layers for vertical drainage. The inner diameter of the drainage pipe is generally 010-015m, and the lower end of the pipe should extend at least 015-020m below the bottom of the roadway slab to prevent moisture from seeping into the surface of the main beam ribs. There are 2 transverse drainage holes for the cast iron drainage pipe, and rectangular cast iron drainage pipes are generally installed at the intersection of the wall guardrail and the bridge deck for transverse drainage. For some small bridges with small spans and no sidewalks, sometimes in order to simplify the structure and save materials, horizontal holes can be directly reserved on the protective belts or curbstones on both sides of the roadway. Iron pipes or PVC pipes can be used to extend the water bridge outside, and the pipe mouth should protrude from the component 002-003m to facilitate dripping. This article briefly discusses the anti-corrosion process of cast iron drainage pipes.

　　Because the water tightness performance of the flat mouth is poor. Therefore. In addition to strictly controlling the quality of the pipes and fittings, special attention should be paid to the protection of the ends of the pipes and fittings, as well as the ovality and flatness of the ends. The installation and construction should be strictly carried out according to the operating procedures, especially when installing straight pipes. Each pipe interface needs to be fixed to the load-bearing wall of the building with a riser clamp. Qualified cast iron pipes require lining with standard thick cement pipes, and the outer wall needs to be sprayed with zinc and coated with asphalt paint. Qualified cast iron drainage pipes can be used for the above. Although there is water flow for a long time, oxygen is scarce, and it is not easy to corrode compared to the outer wall. However, cement lining is necessary. Cast iron drainage pipes are mainly responsible for rainwater and highway drainage tasks. Cast iron drainage pipes are exterior steel pipes formed by adding other additives to high-density steel.

　　4、 Organic combination of strength and flexibility

　　The double corrugated structure effectively enhances the external pressure strength of the drainage pipe, and the drainage system will not be affected by external pressure deformation, which will affect the drainage effect of the drainage pipe.

　　Installation and Application of Cast Iron Drain Pipe

　　1. The installation and construction of drainage pipes must be strictly carried out in accordance with the requirements. The drainage pipes should protrude from the bottom of the structure, not less than 30mm, and the longitudinal spacing between them cannot exceed 4m.

　　2. Cast iron drainage pipes are more suitable for paving structures with waterproof layers. The lower end of the pipe should extend no less than 0.2m from the bottom of the roadway to avoid leakage from the surface of the main beam ribs.

　　Cast iron drain pipes are suitable for paving structures with waterproof layers. The pipe body should be smooth, free of sand holes, and have a long service life, making it a good choice for drainage systems.

　　Because there are many types of cast iron drain pipes. Sometimes if you can't figure out the later installation work, you can't proceed to the next step. For example, the Z-type drain pipe adopts a flat mouth connection, which requires high quality of the pipe material. 1. The pipe material and fittings of the Z-type drain pipe are different from plastic products, especially the geometric dimensions of the fittings are larger, which are used in the construction of reserved holes. It is necessary to verify whether the layout dimensions on the drawings are consistent with the actual installation dimensions. The cast iron drainage pipe of the bridge should be reserved to prevent secondary chiseling for subsequent installation and construction. Precautions for cast iron drainage pipes: The installation and construction of cast iron drainage pipes for 2Z type bridges should be strictly carried out according to the operating procedures, especially when installing straight pipes. At each pipe interface, a riser clamp should be used to fix the riser to the load-bearing wall of the building; Horizontal pipes should be equipped with hangers at each interface, especially at the bathroom where hygiene is more concentrated.

　　Drain pipe manufacturer shares installation method for rectangular drain pipes on bridges

　　The construction of drainage pipes should be carried out according to the design requirements. The drainage pipes should protrude from the bottom of the structure by no less than 30mm and have a longitudinal spacing of no more than 4m. For bridges on overpasses and highways, the drainage pipes should not be directly hung under the slab. The drainage pipes can be directly led to the ground through longitudinal and vertical drainage pipes, or according to the design requirements. The pipes should have good fixing devices, such as anchor rails and clamps, and other embedded parts Innovations: Beautiful and elegant appearance, smooth, low coefficient, pipeline corrosion resistance, wear resistance, no scaling, fluid resistance, fluid transport efficiency, and reduced noise It has the advantages of high impact strength, high mechanical properties, good toughness, and strong bending resistance, which solves the problem of crushing during construction and use Especially suitable for drainage pipes on roads and railways Wide temperature range, good weather resistance, and good dimensional stability during temperature changes Lightweight, low price, easy to transport, install, maintain and upkeep Mainly used in railway bridge drainage, aquaculture, agricultural irrigation and drainage, electrical engineering, and chemical wastewater discharge systems

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