2026\/01\/13<\/p>\n\n\n\n
Introduction: You think you are buying castings, but in fact you are buying the \"stability\" of the supply chain.<\/pre>\n\n\n\nIn the field of international trade and industrial manufacturing, purchasing managers at many equipment manufacturers, machine tool manufacturers, and engineering machinery and automation system suppliers often face a dilemma: the unit price of castings may seem cheap, but the subsequent \"hidden costs\" are shockingly high.<\/p>\n\n\n\n
Purchasing steel castings is not merely a matter of \u201ccomparing prices.\u201d It is a meticulous process of conceptual verification and stress testing. The quality of a casting not only determines the structural strength of the product but also directly affects the smoothness of subsequent CNC machining, the precision of assembly, and the consistency of final product mass production.<\/p>\n\n\n\n
When industries around the world face shortages of labor, fluctuating energy prices, and unstable supply chains, common mishaps in casting procurement often follow the same pattern:<\/p>\n\n\n\n
This article will take a professional perspective from qiao fu shen professional(QFS Casting), using 20 years of vertical integration experience to break down how to lock down a win from the RFQ (request for quote) stage.<\/p>\n\n\n\n
True professional purchasing considers the TCO (total cost of ownership). In the foundry industry, the three things that usually eat up the profit are usually the following:<\/p>\n\n\n\n
Castings are usually the \"foundation base\" or \"core structure\" of the entire machine. If the castings are late by two weeks, all the expensive machining equipment and assembly manpower will be shut down as well. The cost of this \"idle time\" far exceeds the difference in price of the castings themselves.<\/p>\n\n\n\n
Poor-quality castings often come with \"improper machining allowance\" or \"uneven material hardness.\" This can lead to accelerated tool wear and longer machining times. If internal defects are discovered only at the final process step, all the value generated by previous processes is lost.<\/p>\n\n\n\n
If parts such as \"car engine cylinder\" or \"heat treatment furnace tools\" break down at the customer's end, in addition to the cost of replacement, the company loses the brand reputation it has built over decades.<\/p>\n\n\n\n
A complete RFQ is the strongest tool for reducing disputes. If suppliers can quote based on detailed information, their accuracy will increase by more than 40%.<\/p>\n\n\n\n
| \n Category<\/p>\n<\/th>\n | \n The key information you must provide<\/p>\n<\/th>\n | \n Why does this matter in determining your success or failure?<\/p>\n<\/th>\n<\/tr>\n |
|---|---|---|
| \n Image specifications<\/p>\n<\/td>\n | \n 2D engineering drawings, 3D CAD files, version control number<\/p>\n<\/td>\n | \n Avoid production downtime due to version errors; 3D files help simulate trench design.<\/p>\n<\/td>\n<\/tr>\n |
| \n Material specifications<\/p>\n<\/td>\n | \n Steel type name (such as ASTM, DIN, JIS), mechanical properties requirements<\/p>\n<\/td>\n | \n The different steel grades affect the melting temperature and heat treatment route, directly affecting the cost.<\/p>\n<\/td>\n<\/tr>\n |
| \n Production planning<\/p>\n<\/td>\n | \n Sample quantity, monthly demand, and annual estimated production<\/p>\n<\/td>\n | \n The decision on mold strategy (wood mold, aluminum mold, or steel mold) and the degree of automation.<\/p>\n<\/td>\n<\/tr>\n |
| \n Processing information<\/p>\n<\/td>\n | \n Required processing surface markings, processing reference levels, residual requirements, and tolerance grades<\/p>\n<\/td>\n | \n Insufficient machining yield is the most common failure point in castings; this must be defined in the previous section.<\/p>\n<\/td>\n<\/tr>\n |
| \n Surface treatment<\/p>\n<\/td>\n | \n Surface roughness (Ra), paint\/sandblasting requirements, anti-rust regulations<\/p>\n<\/td>\n | \n Avoid disputes that arise during appearance inspection, such as \"You think you can, but I don't think you can.\"<\/p>\n<\/td>\n<\/tr>\n |
| \n Inspection standards<\/p>\n<\/td>\n | \n Measurement items, NDT (UT\/MT\/PT) percentage, inspection report format<\/p>\n<\/td>\n | \n Ensure the traceability of products, especially aerospace and automotive parts.<\/p>\n<\/td>\n<\/tr>\n |
| \n Heat treatment<\/p>\n<\/td>\n | \n Normalization, Tempering, Retort, Hardness Range Requirements<\/p>\n<\/td>\n | \n Affects dimensional stability and workpiece life, especially high-temperature parts such as honeycomb panels.<\/p>\n<\/td>\n<\/tr>\n |
| \n Packaging transportation<\/p>\n<\/td>\n | \n Anti-rust grade, wooden box specifications, hook point design, and transportation risk coverage<\/p>\n<\/td>\n | \n Large castings (such as those in the 5,000kg class) are extremely vulnerable to damage during transportation if they are not designed with a lifting point.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n <\/p>\n\n\n\n 3. qiao fu shenThe four major technology paths: solutions tailored to different needs<\/h2>\n\n\n\n |