Some questions about the bearing capacity of nodular cast iron pipes!
But the key is that the cast iron pipe needs centrifugal casting, especially the longer tube. Therefore, we must understand whether the production plant has this production condition, otherwise, the higher quotation may not be able to produce.
The minimum tensile strength of ductile iron is 400MPa, and the stresses can be calculated according to the wall thickness, diameter and safety factor.
The pipe diameter is D, the tube thickness is T, and the internal bearing pressure P is related to the yield limit [S] of the pipe:PD=2T[S]Or [S]=PD/ (2T)If the P=3MPa, D=300mm and T=6 mm are substituted, the pipe yield limit should be given[S]=3*300/ (2*6) = 75 MPaI think the ductile iron pipe's yield limit should be greater than this value. Factory production should be all right. Only ductile iron pipe production, low product specifications, prices are higher.
