Standard Number: SY/T 6858.4-2012(SY/T6858.4-2012)
Chinese:油井管无损检测方法 第4部分：钻杆焊缝超声波检测
English:Non-destructive testing methods for oil well pipe Part 4: Ultrasonic testing of drill pipe welds
Effective Date:2012-12-01
Standard Applicability:
PDF Downloadable: N
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