| International Grade Cross-Reference Table | |||||
| Material Type | China (GB) | International (ISO) | USA (ASTM) | Germany (EN) | Japan (JIS) |
| Phosphorus Deoxidized (DPA) | TP2 | Cu-DHP | C12200 | CW024A | C1220 |
| Electrolytic Tough Pitch (ETP) | T2 | Cu-ETP | C11000 | E-Cu58 | C1100 |
| Oxygen-Free (OF) | TU2 | Cu-OF | C10200 / C10100 | OF-Cu | C1011 |
| Mechanical Properties & Temper Table | |||||
| Temper Code | Condition | Tensile Strength Rm (MPa) | Elongation δ5 (%) | Vickers Hardness HV | Application Suggestion |
| O60 (Soft / Annealed) | Annealed (M) | 220 – 250 | ≥ 45 | 40 – 60 | Bending, flaring, coiling, HVAC hairpins |
| H55 (Light Drawn / Semi-hard) | Half Hard (Y2) | 270 – 305 | ≥ 125 | 70 – 110 | General plumbing, straight lengths for residential water lines |
| H80 (Hard Drawn) | Hard (Y) | ≥ 350 | ≥ 250 | 100 – 140 | High-pressure applications, underground service lines |
| Standard Specifications & Applications Table | ||||
| Standard | Tube Type / Series | Nominal Sizes (Inch) | Wall Types | Primary Applications |
| ASTM B88 | Water Tube | 1/4″ to 12″ | Type K (Heaviest), L (Standard), M (Lightest) | Potable water, plumbing, underground service lines |
| ASTM B280 | ACR Tube (Air Conditioning) | 1/4″ to 4-1/8″ | Standard (Actual OD) | Refrigerant lines, heat pumps, air conditioning systems |
| ASTM B819 | Medical Gas Tube | 1/4″ to 8″ | Type K, L | Oxygen, nitrous oxide, vacuum systems in hospitals |
| ASTM B306 | DWV Tube | 1-1/4″ to 8″ | Drain, Waste, Vent (Thinner wall) | Non-pressure drainage, waste, and vent lines |
| Supply Forms & Lengths Table | |||
| Form | Temper | Typical Lengths | Typical Applications |
| Straight Lengths | Hard (Drawn) / Annealed | 3m, 6m, 12m (10 ft, 20 ft) | Rigid plumbing, building installation, engineering structures |
| Coils (Level Wound) | Soft (Annealed) | 15m, 30m, 50m, 100m (50 ft, 100 ft) | Underground water lines, split AC refrigerant lines, radiant heating |
| Jumbo Coils | Soft (Annealed) | Continuous (custom weight) | Industrial HVAC, large-scale refrigeration, automotive heat exchangers |
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