Krautkrämer
Testing Machines
Full Body Ultrasonic Inspection ofTubes with Rotating Probe System
Krautkrämer ROT Series Rotaries for
Linear Tube Transport
The requirements on OCTG pipe products have been
constantly rising due to advanced exploration techniques
like hydraulic fracturing or horizontal drilling. Seamless tubes(e. g. for risers or drill pipe) are usually tested for flaws on
the outer and inner surface and for inside wall defects. As
well wall thickness- and dimensional measurement (GEO)
takes place. Waygate Technologies rotary testing machines
are the optimum solution to fulfill the required test task on
small to medium diameter ranges, representing a compact
solution that can be integrated directly into the production
process. Beside seamless tubes, electrically-welded tubes(ERW) having flash- trimmed weld seams are also tested
on rotation units if the later tube application specifies acorresponding test.

Test procedure
The tubes are transported to the testing machine via linear
roller conveyors having speeds up to 120 m/min. The tests
are normally carried out in single tube testing mode but it isalso possible to test in continuous end-to-end testing mode
to reduce the untested ends and to increase the productivity.
Several triple or double roller drivers overtake the guidance
and the constant transport of the tubes directly in frontof and behind the rotation mechanics. Precisely guided
by additional bushes in the ROT mechanics, the tubes areimmersed in the rotating water jacket.
Ultrasonic properties
The test mechanic’s rotor contains ultrasonic test modules
which are equipped with probes for the required test
specification and which are successively released for testingin order to obtain as short untested tube ends as possible.
The probes are not in direct contact with the tube surface.

The new, fully parallel operating high-end ultrasonic test andevaluation electronics, type USIP|xx, processes all signals andcarries out a separate evaluation according to flaw type andposition. In order to avoid or to limit misinterpretations due toelectrical interferences, a noise suppression takes place bymeans of a dynamic dual-threshold method prior to issuing
the flaw result. Thanks to this noise suppression method, no test
shot is lost, and every single pulse is evaluated. Test results canbe stored, visualized in online stripcharts and/or submitted to a
Level 2 network. An immediate marking of the defective areasat the output end of the guiding device and the subsequentsorting of the tubes can be implemented as well.
If required, additional Eddy Current inspection can be offered.
Both the UT and EC equipment will be integrated into a single
test bench, which offers minimum space requirements.

Test Specifications• EN ISO 10893 – 8, -10, -12• API 5 CT, API 5 L, API 5 D, API 5 C2• Other Specifications on Request

Technical Specifications• Longitudinal and Transverse Flaw Test
• Lamination test
• Wall Thickness and Excentricity test
• Geometry Measurement (ID, OD, Ovality)
Typical Data of the Testing Machines
Krautkrämer
ROT

Typical Dia.
[mm]

Typical Feeding Speed[m/min]65

10-90

30-120180

20-177.8

30-120250

40-244.5

30-96

350

60-323.930-80

Typical features, detailed information on request• Measuring accuracy for wall thickness
measurement: ± 0.03 mm• Measuring accuracy for geometry
measurement: ± 0.05 mm

Test Electronics• Higher accuracy possible by means of averaging

High-end UT Electronics Platform USIP|xx• WINDOWS, 64 bit operating system• Max. 20kHz pulse repetition frequency in full parallel
operation• 20 bit amplitude per channel• 5 gates including interface trigger gate, measurement
resolution 2,5 ns• Pre-defined and customizable digital filter• Gigabit ethernet connection to Control PC• Automatic sensitivity adjustment• Extensive monitoring functions, self-tests and diagnostic
supports• Integrated geometry measurements (GEO) on request

Copyright 2021 Baker Hughes Company. All rights reserved.
BHCS39029(06/2021)

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