Direct technical answer
How capillary tubing is manufactured and specified
Capillary tube manufacturing starts with material grade selection and tube size planning, then moves through drawing or sourced tube preparation, OD and ID control, wall thickness review, cut-to-length processing, surface finishing, inspection, and packing. Buyers should define the required material, outside diameter, inside diameter, wall thickness, tolerance, cut length, surface condition, and application before asking for quotation.
Key points for buyers and engineers
- Use OD, ID, and wall thickness together; a single diameter is not enough for technical sourcing.
- Match 304, 304L, 316, or 316L stainless steel to corrosion, cleaning, and application requirements.
- For thin wall tubing, confirm bore consistency, end deformation risk, burr control, and packing method.
- Ask for inspection notes or measurement method when tolerance is critical to assembly or flow performance.
Technical facts to compare
Useful next pages
FAQ
What information is needed for a capillary tube manufacturing quote?
Send material grade, OD, ID, wall thickness, tolerance, length, quantity, end condition, surface finish, application, and any inspection or documentation requirements.
Why are OD and ID both important?
OD controls fit with the surrounding assembly, while ID affects flow path, clearance, probe function, and internal passage requirements.
RFQ information to prepare
For supplier review, prepare material grade, OD, ID, wall thickness, cut length, tolerance, quantity, surface finish, application, drawing files, inspection requirements, packing notes, and destination country.
Supplier quote support is available through Dongguan Yefa Metal Materials Co., Ltd, while this page remains focused on capillary tubing technical data and sourcing decisions.