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the inner and outer plastic-coated epoxy resin steel pipes are suitable for water supply and drainage, drinking water, clean water, seawater, warm water, oil, gas, and other media transportation. the inner and outer surfaces of the steel pipe or only the outer surface can be coated as required. plastic-coated pipes cannot be connected, only threaded or flanged. plastic-coated pipes are steel-plastic composite products that use steel pipe as the base pipe, plastic powder as the coating material, a plastic layer on the inner surface, and a plastic layer or another anti-corrosion layer on the outer surface. in the construction of water supply pipelines, pipes with a nominal diameter of less than mm are selected, plastic-coated pipes are selected, and clamp connections are selected as the connection method. if the base pipe of plastic-coated epoxy resin steel pipe is straight seam steel pipe, it shall meet the requirements of gb/t3091-2015 standard for base pipe; if the base pipe is spiral submerged arc welded steel pipe, it shall meet the requirements of sy/t5037-2018 standard for base pipe; if the base pipe is seamless steel pipe, it shall meet the requirements of gb/t8163-2012 standard for base pipe. if the base pipe is other steel pipes, it should meet the requirements of the industry standard for the base pipe. the above are the requirements for the capacity and construction of plastic-coated steel pipes.
the inner and outer plastic-coated epoxy resin steel pipes pay attention to some details during construction, which can better ensure the correct use. the inner and outer plastic-coated epoxy resin steel pipes have passed the mandatory c certification, the us fm, and ul export qualification certification, organize production in strict accordance with the requirements of the iso: 2 quality management system, and implement erp management internally. the inner and outer plastic-coated epoxy resin steel pipes have successively introduced vertical split type boxless injection molding automatic lines, plastic-coated pipe fittings production lines, plastic-impregnated pipe production lines, and electrostatic spraying production lines. while introducing foreign technologies and processes, the company has successively cooperated with wuhan university, shandong university, and several design institutes to develop ultra-polymer wear-resistant pipes, ultra-wear-resistant ceramic pipes, pipe fittings, and other products. the inner and outer plastic-coated epoxy resin steel pipes have advanced scientific research institutions and laboratories, and are equipped with inspection and testing equipment such as metallographic, mechanical tests, and automatic analyzers for molten iron in front of the furnace. the products have passed the type inspection of the fixed fire extinguishing system and the quality supervision and inspection of fire-resistant components, the safety certificate of coal mine products issued by the safety mark of mining products, and the quality inspection and testing of electrical equipment in the power industry; and have won many and new technology achievement awards.