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In the urban water supply project, the cost of the water supply pipeline accounts for a relatively large investment in the entire water supply project, accounting for 50-70% of the total cost of the entire water supply project. Therefore, choosing the right pipe and good construction quality is the fundamental guarantee for ensuring the safe operation of the urban water supply pipe network.
The main components of ductile iron pipes are carbon, silicon, manganese, sulfur, phosphorus and magnesium. A certain amount of spheroidal graphite is distributed on the ferrite and pearlite matrix. The proportion of ferrite and pearlite in the matrix is ​​different according to the nominal diameter and the elongation requirement. The proportion of pearlite in small diameter is small. Generally not more than 20%, the general control of large diameter is about 25%. Minimum tensile strength: 420/Mpa, minimum yield strength 300/Mpa, minimum elongation 7%.
Ductile iron pipe implementation standard GB/T13295-2008 ISO2531/2008
Implementation of the national GB/T13295-91 standard ISO2531-K9.
The following is the specifications and quotation of ductile iron pipe of a pipe company in Shandong:
Product name specification material weight / root (KG unit price note
DN100 ductile iron 9552006 meters
DN150 ductile iron 14441006 meters
DN200 ductile iron 1194.006 m
DN250 ductile iron 25506 meters
DN300 ductile iron 32339506 meters
DN350 ductile iron 40306 meters
DN400 ductile iron 48239506 meters
DN450 ductile iron 57740506 meters
DN500 ductile iron 66940506 meters
DN600 ductile iron 88241506 meters
DN700 ductile iron 112342506 meters
DN800 ductile iron 139443006 meters
DN900 ductile iron 169006 meters
DN1000 ductile iron 201706 m
DN1200 ductile iron 275806 meters
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Guangzhou Jointair Co., Ltd. , https://www.jointair.cn