•铜：99.90%，磷：0.015-0.040%
•K型、L型和M型
•硬质（H58）、半硬质（H55）、轻退火（O50）、软退火（O60）
直管用于暖通空调和制冷应用以及水系统。具有高强度，高准确度和清洁度，热交换效率高，易于焊接，耐腐蚀性等特性。
尺寸 Size inch | 外径 Outside Diameter in (mm) | Type K in (mm) | Type L in (mm) | Type M in (mm) | 长度 Length |
| 1/4" | 0.375 (9.52) | 0.035 (0.89) | 0.030 (0.76) | / | 5.8m/6m |
| 3/8" | 0.500 (12.70) | 0.049 (1.24) | 0.035 (0.89) | 0.025 (0.64) | 5.8m/6m |
| 1/2" | 0.625 (15.88) | 0.040 (1.02) | / | 5.8m/6m | |
| 5/8" | 0.750 (19.05) | 0.042 (1.07) | / | 5.8m/6m | |
| 3/4" | 0.875 (22.23) | 0.065 (1.65) | 0.045 (1.14) | 0.032 (0.81) | 5.8m/6m |
| 1" | 1.125 (28.58) | 0.050 (1.27) | 0.035 (0.89) | 5.8m/6m | |
| 1 1/4" | 1.375 (34.93) | 0.055 (1.40) | 0.042 (1.07) | 5.8m/6m | |
| 1 1/2" | 1.625 (41.28) | 0.072 (1.83) | 0.060 (1.52) | 0.049 (1.24) | 5.8m/6m |
| 2" | 2.125 (53.98) | 0.083 (2.11) | 0.070 (1.78) | 0.058 (1.47) | 5.8m/6m |
| 2 1/2" | 2.625 (66.68) | 0.095 (2.41) | 0.080 (2.03) | 0.065 (1.65) | 5.8m/6m |
| 3" | 3.125 (79.38) | 0.109 (2.77) | 0.090 (2.29) | 0.072 (1.83) | 5.8m/6m |
| 3 1/2" | 3.625 (92.08) | 0.120 (3.05) | 0.100 (2.54) | 0.083 (2.11) | 5.8m/6m |
| 4" | 4.125 (104.78) | 0.134 (3.40) | 0.110 (2.79) | 0.095 (2.41) | 5.8m/6m |
| 5" | 5.125 (130.18) | 0.160 (4.06) | 0.125 (3.18) | 0.109 (2.77) | 5.8m/6m |
| 6" | 6.125 (155.58) | 0.192 (4.88) | 0.140 (3.56) | 0.122 (3.10) | 5.8m/6m |
