Process planning and inspection follow the same factory quality system used for our other manufactured components. Background on the plant and quality documents is available on our factory introduction and quality control and technical documentation pages. We are a manufacturer, not a trading-only office; this point is also explained in the FAQ Are you a manufacturer or a trading company?
Which applications do these parts serve?
These flanges, housings and adapters are commonly used in pumps, valves, fluid and gas systems, industrial equipment and automotive gas assemblies. The function, pressure rating and sealing method are defined by the customer design. We machine to the drawing or sample and do not change the design unless the customer asks us to review it.
What should you send to get a quotation?
A 3D file is useful for programming, but it is usually not enough on its own for a reliable quote. Please send the following to sales@scyuncheng.com, or contact us on WhatsApp at +8618628088808:
A 2D drawing, a 3D file, or a clear photo of the sample. If both a drawing and a 3D file are available, send both.
Material and surface-finish requirements, including anodizing type or coating color if already decided.
Quantity for the sample and for later batch production.
Critical tolerances, the thread standard, and any inspection requirement. Please mark which dimensions must be held after surface treatment.
The target delivery date and the shipping destination.
We can review the files, confirm the process route and quote samples first. After the sample is approved, batch production can start.
FAQ
Is a 3D file enough to quote custom CNC flanges and housings?
A 3D file helps the machinist understand the shape, but it usually does not include tolerances, thread standards, material notes or finish requirements. For an accurate quotation, please also provide a 2D drawing or a short note that lists material, quantity, surface finish and the dimensions that are critical. If only a physical sample is available, we can discuss how to measure the key features before production.
Will anodizing change the size of aluminum flanges and housings?
Yes. Anodizing forms an oxide layer on the aluminum surface, and this layer adds a small amount of thickness. The added thickness depends on the anodizing type and process. If a bore, fit or sealing face has a tight tolerance, the drawing should state whether the dimension applies before or after anodizing. We can machine with an allowance and inspect the part after finishing when this is required. Please do not assign a very tight tolerance to a feature unless that feature actually controls assembly or sealing, especially on anodized surfaces.
Can a cast housing meet tight tolerances without CNC machining?
Usually not on the features that control assembly. Castings are suitable for the main body shape, but sealing faces, bores, bolt-hole position and threads are normally finished by CNC machining. A practical approach is to leave non-contact walls as-cast and machine only the functional surfaces. This avoids paying for tight tolerance on faces that do not mate with another part. If you are unsure which dimensions should be machined, send the drawing and we can comment on the process before quoting.
To start a project, send the drawing or sample details to sales@scyuncheng.com or message WhatsApp +8618628088808. You can also use the contact page.
