JIS H3300 C1220T is a phosphorus-deoxidized seamless copper tube (Cu-DHP) supplied by Yuhong Group Co., Ltd. for heat exchanger, condenser, and refrigeration-circuit tube bundles. The grade contains ≥ 99.90% Cu + Ag with controlled residual phosphorus at 0.015–0.040%, a chemistry that suppresses hydrogen embrittlement during high-temperature brazing and supports consistent tube-to-tubesheet joint integrity.
The tube is cold-drawn and annealed to O, 1/2H, or H temper, giving fabricators a defined balance of bendability and pressure-containing strength rather than a single fixed condition. Typical buyer searches this page answers include "C1220T copper tube equivalent," "JIS H3300 heat exchanger tube," and "phosphorus-deoxidized copper tube supplier."
| Parameter | Value / Range | Practical relevance |
|---|---|---|
| Cu + Ag | ≥ 99.90% | High-purity copper matrix for thermal duty |
| Phosphorus (P) | 0.015–0.040% | Deoxidized melt; brazing reliability |
| Impurities | ≤ 0.10% | Controlled residual elements |
| Temper O (soft) | Tensile ≥ 205 MPa; elongation ≥ 40% | Bending and U-bend forming |
| Temper 1/2H | Tensile ≥ 240 MPa; elongation ≥ 10% | Higher strength with limited forming |
| Temper H | Tensile ≥ 295 MPa; elongation ≥ 3% | Strength-critical straight lengths |
Data reflect JIS H3300 C1220T requirements. Thermal conductivity is approximately 339 W/(m·K) for Cu-DHP, supporting heat-transfer calculations without relying on oxygen-bearing copper assumptions. Unlike C1100 oxygen-bearing copper, the phosphorus addition in C1220T is the deliberate metallurgical choice for brazed assemblies where reducing atmospheres and high torch temperatures are present.
In shell-and-tube heat exchangers and condensers, C1220T is used as the heat-transfer tube in straight, U-bend, or tube-bundle form. In clean freshwater and steam-condensate circuits, the tube provides a thermally efficient, braze-compatible surface that holds dimension through tube-sheet rolling and flaring.
For seawater or high-chloride cooling media, C1220T is not positioned as a direct substitute for copper-nickel grades; project specifications should confirm material selection against the actual chloride level, flow velocity, and fouling profile.
Compliance is supplied against JIS H3300 C1220T only. Each batch can be released with chemical analysis, tensile testing, eddy-current testing, hydrostatic testing, and dimensional inspection, with EN 10204 3.1 certification and third-party inspection (SGS/BV) available on request.
C1220T (JIS H3300) corresponds to UNS C12200 / Cu-DHP in composition family. This page supplies and certifies against JIS H3300 C1220T; C12200 is referenced only as a material-equivalence search term.
Indicative MOQ is 500 kg per size. FOB Ningbo/Shanghai is quoted against the confirmed specification. Lead time is 15–30 days after receipt of a technically clarified purchase order, subject to mill schedule and temper availability.
C1220T is routinely specified for clean freshwater and steam-condensate sides. Raw seawater with elevated chloride and erosion potential generally calls for a copper-nickel tube grade; share the water chemistry and velocity so the tube material can be checked against the actual duty.
Tubes are supplied in straight lengths or coil form, with ends capped and inner surface protected where specified. Export packing is plywood case / pallet with moisture-barrier lining, seaworthy for container or break-bulk shipment. Marking, bundle tagging, and mill test certificate packing follow the purchase-order document list.
Send the tube specification — OD × wall thickness × temper × quantity × application — to Yuhong Group Co., Ltd. for a JIS H3300 C1220T quotation covering FOB/CIF terms, MOQ confirmation, lead time, and certification scope.
