the coating methods of plastic-coated steel pipes for large-diameter water delivery are divided into two categories: internal coating and external coating at the same time, and internal coating and external coating separately.process coating methods are also divided into

epoxy resin-coated steel pipes inside and outside first pre-treat the base pipe--grind the steel pipe (advantages: automatic spraying makes the inner and outer walls of the base material evenly coated, and the leveling property is good. it meets the cj/t120-2008 standard and gb/t

requirements for the adhesive powder of the anti-corrosion coating of tpep anti-corrosion steel pipes: as the middle layer adhesive of tpep anti-corrosion coating, it must meet the requirements of the national standard gb/t23257 "buried steel pipeline polyethylene anti-corrosion

1. process comparison: since the plastic-coated steel pipe is constructed under no pressure, the lining layer has no internal stress. the lining layer and the steel pipe are a one-step process, and the construction process is simple. the plastic-lined steel pipe first needs to ex

there are different opinions on the cleaning methods of plastic coated steel pipes. the following summarizes some of the cleaning methods for plastic-coated steel pipes.(1) rust removal by spraying (throwing) shooting: rust removal by spraying (throwing) shooting is drive

first, definitions, classification, and terminology1. plastic-lined steel pipe1.1 definition: plastic-lined steel pipes are steel-plastic composite products with steel pipes as the base pipe, treated inner and outer surfaces, galvanized outside and painted or painted, and lined with polye

as we all know, plastic-coated steel pipes can be used not only in the field of water supply and drainage but also in the field of automatic sprinkler fire extinguishing systems, groundwater sewage dredging pipes, central air-conditioning cooling circulating water pipes, cable th

the coating methods of plastic-coated steel pipes for large-diameter water delivery are divided into two categories: internal coating and external coating at the same time, and internal coating and external coating separately.process coating methods are also div

first, the composition of epoxy resin coated anti-corrosion steel pipe:1. steel pipe: seamless steel pipe, straight seam steel pipe, spiral steel pipe, and other steel pipes2. epoxy resin coating this product is a two-component, high-solid coating with epoxy resin a

first. epoxy anti-corrosion layer:1. the epoxy anti-corrosion layer is suitable for anti-corrosion on the outer wall of steel pipelines for buried oil, water, and gas, and the temperature of the transport medium is required to be lower than or equal to 110°c.2. the raw material is e

features of inner and outer plastic-coated steel pipes: inner and outer epoxy resin-coated steel pipes are steel-plastic composite pipes made of welded steel pipes as the base material, and sandblasting chemical double pre-treatment, preheating, inner and outer coating, curing, a

plastic-coated steel pipe is a new type of pipeline material recently developed in china. it adopts a composite structure with a plastic-coated protective layer inside and outside, and a reinforced welded steel pipe or seamless pressure-bearing steel pipe in the middle, which ove

advantages of outer polyethylene inner epoxy resin coated steel pipe:1. it has high mechanical strength and is suitable for harsh environments;2. the inner and outer coatings can prevent metal oxidation and have good chemical corrosion resistance;3. the coati

precautions for the use of plastic-coated steel pipes and analysis of connection and installation: metal saws or threading machines should be used for extrusion cutting and gas cutting to avoid excessive temperature and the strong extrusion during cutting, which will melt and def

the inner and outer walls of plastic-coated steel pipes are coated with epoxy resin, the surface is smooth, the fluid resistance is reduced, the flow rate is increased, no scale is formed, and microorganisms generally do not grow. the service life of the fire water supply (gas) p

plastic-coated composite steel pipes usually refer to double-sided plastic-coated pipes, also known as plastic-coated steel pipes on the outside and inside. for composite steel pipes, the early de-rusting technology plays a vital role in the quality of the finished pipe. therefor

plastic-coated steel pipes, also known as plastic-coated pipes, steel-plastic composite pipes, and plastic-coated composite steel pipes, use steel pipes as the substrate and weld a layer of plastic anti-corrosion layer or steel-plastic composite steel pipe with plastic anti-corro

the detection of plastic-coated steel pipes has always been an important existence for us. given the existing conditions, the following inspections and tests are often carried out by us:appearance inspection: visually inspect the appearance quality of the coated steel pip