GB/T 5777-2008: Seamless steel pipe and tubing methods for ultrasonic testing

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Scope

This standard specifies the ultrasonic testing principle, ultrasonic testing methods,
reference block, ultrasonic testing equipment, ultrasonic testing conditions, ultrasonic
testing procedures, result evaluation and ultrasonic testing report for seamless steel
tubes.
This standard is applicable to the ultrasonic testing for longitudinal and transverse
defects of seamless steel tubes for various purposes. The testing methods stated in
this standard are mainly applicable to test the defects that destroy the metal continuity
of steel tubes, but can not effectively test laminar defects.
This standard is applicable to the inspection of tubes with an outside diameter greater
than or equal to 6 mm, and with a wall thickness-outside diameter ratio less than or
equal to 0.2.For tubes with a wall thickness-outside diameter ratio greater than 0.2,
one of the methods specified in annex C shall be used by agreement between
manufacturer and purchaser.
Electromagnetic ultrasonic testing may be carried out according to this standard.

Basic Data

Standard ID	GB/T 5777-2008 (GB/T5777-2008)
Description (Translated English)	Seamless steel pipe and tubing methods for ultrasonic testing
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H26
Classification of International Standard	77.040.20
Word Count Estimation	15,196
Date of Issue	2008-08-05
Date of Implementation	2009-04-01
Older Standard (superseded by this standard)	GB/T 5777-1996
Quoted Standard	GB/T 9445; YB/T 4082; JB/T 10061
Adopted Standard	ISO 9303-1989 (E), MOD
Regulation (derived from)	National Standard Approval Announcement 2008 No.14 (Total No.127)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the detection principle of ultrasonic testing of seamless steel tubes, detection methods, testing conditions, , detection step, comparative samples, detection equipment evaluation and testing results report. This standard applies to a variety of uses seamless steel vertical, ultrasonic inspection face transverse defects. This standard is mainly used to test the testing method destroys the continuity of the metal pipe defects, but can not effectively test laminar defects.