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Shandong Changyu Pipe Industry Co., Ltd. specializes in the production and sales of ductile iron pipes, flexible cast iron pipes, flexible anti-seismic cast iron pipes, national standard ductile iron pipes and other series of products. It mainly produces centrifugal ductile iron pipes with a production specification of dn80mm-dn800mm, with an annual output of 200000 tons. The products are strictly produced and inspected in accordance with the international standard ISO2531 to ensure that each cast pipe has good mechanical properties It has a long service life and is a professional ductile iron pipe manufacturer in Shandong Province. The company has passed ISO9001 quality management system certification, environmental management system certification and health management system certification, forming a perfect management system. The products have T-type, W-type and other interface forms and a variety of internal and external anti-corrosion treatment technologies (can be lined with cement, epoxy asphalt, epoxy resin, etc.) suitable for acid and alkali environment. The new cast iron pipes, pipe fittings and accessories for water and gas pipelines (GB) are adopted/ T13295-2008) national standard: the product can not only be used in the underground pipe network of pressure transmission and distribution of urban natural gas and gas, but also widely used in the pipe network of water transmission, oil transportation, urban pipe network, garden community, fire engineering pipeline, as well as the production process pipe network of food, pharmaceutical, chemical and other industries, which can meet the needs of various users. Supporting pipe fittings include: 45 degree elbow, 90 degree elbow, 22.5 degree elbow, straight tee, reducer tee, cross, sleeve, reducer, socket plug, plug-in, short flange pipe, pipe a, B and other pipe fittings of various specifications. Our factory also produces φ 700, φ 630, φ 600 light, heavy, nodular cast iron manhole covers, cast iron rainwater grates, ladders, single and multi household water meter manhole covers. The products are of high quality. Compared with gray iron pipe and steel pipe, the ductile iron pipe fittings have excellent mechanical properties and characteristics such as high strength, high elongation, corrosion resistance, high pressure resistance, earthquake resistance, thin wall, etc., and they are of compact structure, good sealing performance and simple installation. Ductile iron pipe is also called cast iron pipe and ductile iron pipe. Ductile iron pipe is made of pig iron. According to the different manufacturing methods, it can be divided into: Sand Mold Centrifugal socket straight pipe, continuous cast iron straight pipe and sand mold iron pipe. According to the different materials used, it can be divided into: gray iron pipe, ductile iron pipe and high silicon iron pipe. Cast iron pipes are mostly used in water supply, drainage and gas pipeline engineering.

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