T/ZGWJHXH 39-2020 Active Group standards

T/ZGWJHXH 39-2020 Ultrasonic Inspection of the Annular Docking Joint of the Flowmeter's Annular Chamber and Short Section

T/ZGWJHXH 39-2020

Publish Date: 2020-10-20 Implement Date: 2020-11-20 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/ZGWJHXH 39-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Industrial automation instrumentation and control devices

ICS Name: Pneumatic tools

Publish Date: 2020-10-20

Implement Date: 2020-11-20

Scope

Main technical content: This standard specifies the detection method and quality grading requirements for detecting workpiece defects using A-type pulse reflection ultrasonic detectors on the circumferential butt joints of flowmeter ring chambers. This standard applies to welded joints that meet the following conditions simultaneously: a) the base material is low-carbon steel or low-alloy steel; b) circumferential butt joints with fully penetrated welding structure; c) when the weld contains ferrite components, the applicable workpiece thickness is t: 6 mm ≤ t ≤ 150 mm, and the workpiece thickness on both sides of the weld is the same; when the weld contains austenite components, the applicable workpiece thickness is t: 10 mm ≤ t ≤ 80 mm, and the workpiece thickness on both sides of the weld is the same; d) outer diameter D0: D0 ≥ 159 mm. 1.3 Ultrasonic detection of other butt joints of flowmeters can also be implemented in accordance with this standard.