产品简介 PRODUCT INTRODUCTION
美国标准 AMERICAN STANDARDS
接箍：Coupling：
标准接箍：Standard Coupling
● 尺寸偏差：Dimensions and Tolerances
外径、壁厚、重量允许偏差 Outside Diameter, Wall Thickness and Weight Tolerances：
| 项目 Item | 允许偏差 Tolerance |
外径
Outside Diameter | 管体 Pipe Body | D≤101.60mm ±0.79mm |
| D≥114.30mm -0.5%OD./+1.0%OD. |
| 接箍 Coupling | ±1%OD |
| 壁厚 Wall Thickness | -12.5%t |
| 重量 Weight | 单根 Single Lengths | +6.50% |
| -3.50% |
| 车载量 Carload Lots | 0, -1.75% |
螺纹参数允许偏差 Thread Parameter Tolerances：
品种规格
Type and Size | 锥度
Taper
mm/m | 螺距 Pitch mm | 齿高
Height mm | 螺纹角度
Angle
度 deg. | 螺纹长度a
Length L4
外螺纹
External Thread | 管端倒角
Chamfer on End of Pipe
度 deg. | 紧密距a
Standoff |
每英寸
Per inch | 累计
Accumulative | 管体螺纹
Pipe Thread | 接箍螺纹
Coupling Thread |
圆螺纹油管
Round Thread Tubing
2 3/8”~4 1/2” | 10 牙/英寸
Threads per inch | +5.208
-2.600 | ±0.076 | ±0.152 | +0.051
-0.102 | 1½ | 1½P | +5
-0 | ±1½P | ±1½P |
8 牙/英寸
Threads per inch | +5.208
-2.600 | ±0.076 | ±0.152 | +0.051
-0.102 | 1½ | 1P | +5
-0 | ±1P | ±1P |
圆螺纹套管 Round Thread Casing
4”~7” | +5.208
-2.600 | ±0.076 | ±0.152 | +0.051
-0.102 | 1½ | 1P | +5
-0 | ±1P | ±1P |
偏梯形螺纹套管
Buttress Thread Casing
4 1/2”~7” | 接箍 Coupling | +4.50
-2.50 | ±0.051 | ±0.102 | ±0.025 | - | - | +5
-0 | +1½P
-O | +0
-1½P |
| 完整螺纹 Perfect thread | +3.50
-1.50 |
| 不完整螺纹 Imperfect thread length | +4.50
-1.50 |
