产品简介 PRODUCT INTRODUCTION
美国标准 AMERICAN STANDARDS
管线管
LINE PIPE
● 标准 Standard：
API SPEC 5L
● 用途 Application：
用于石油、天然气工业中的气、水、油输送
It is used for conveying gas,water,and petroleum of both the oil and natural gas industries.
尺寸公差 Tolerance on Dimension：
| 标准 | 外径公差 | 壁厚公差 |
| Standard | Outside Diameter | Wall Thickness Tolerance |
| API SPEC 5L | Tolerance | Tolerance |
| D<60.3 | +0.41mm,-0.80mm | +15.0 %S -12.5%S |
| D≥60.3 | +0.75%D -0.75%Dmm |
● 机械性能 Mechanical Properties:
标准
Standard | 钢级
Grade | 屈服强度(MPa)
Yield strength | 抗拉强度(MPa)
Tensile Strength | 延伸率（%）
Elongation |
| API SPEC 5L | PSL1 | 查API SPEC 5L 表3
See table 3
of API SPEC 5L |
| A25 | ≥172 | ≥310 |
| A | ≥207 | ≥331 |
| B | ≥241 | ≥414 |
| X42 | ≥290 | ≥414 |
| X46 | ≥317 | ≥434 |
| X52 | ≥359 | ≥455 |
| X56 | ≥386 | ≥490 |
● 化学成分 Chemical Composition(%)
标准
Standard | 钢级
Grade | C | Mn | P | S |
| Max | Max | Min | Max | Max |
| API SPEC 5L | PSL1 |
| A25Ⅰ | 0.21 | 0.60 |
| 0.030 | 0.030 |
| A25Ⅱ | 0.21 | 0.60 | 0.45 | 0.080 | 0.030 |
| A | 0.22 | 0.90 |
| 0.030 | 0.030 |
| B | 0.28 | 1.20 |
| 0.030 | 0.030 |
| X42 | 0.28 | 1.30 |
| 0.030 | 0.030 |
| X46,X52,X56 | 0.28 | 1.40 |
| 0.030 | 0.030 |
