Webco Tubing Boiler Testing

Webco's goal is to provide the highest quality product possible to the customer. To that end, we maintain an extensive and comprehensive suite of testing methodologies, such that we can not only ensure specification are met, but that we are also capable of testing well beyond specification when a customer's needs calls for it. Below are the standard testing methodologies used for Webco Welded Boiler Tubing. Other testing, and testing beyond specification is available.

Full Body Eddy Current Testing (Standard)

Full body eddy current testing is performed to ASTM A450 requirements and in accordance with practice E 309, for ferromagnetic products, and practice E 426 for non-magnetic products.The eddy current test method employs an encircling test coil that combines exciter and sensor capabilities. The tubular product is Eddy Current Testing

examined as it passes through the center of the coil in a longitudinal direction. Alternating current is passed through the exciter portion of the coil, which due to the close proximity induces corresponding eddy currents to flow in the tubular product. The sensor portion of the coil detects the resultant electromagnetic flux related to the eddy currents. Discontinuities in the tubular product disrupt the natural flow of eddy currents. The sensor detects this disruption and generates an indication signal.The system is calibrated to a reference standard, (a sample tube of the same size and material as the product to be tested). The reference standard contains machined artificial discontinuities. Shape and dimensions of the discontinuities are closely controlled to specification requirements. The reference standard is passed through the test coil at the same speed as the intended production. The magnitude of the signal produced by the artificial discontinuities is adjusted to a threshold level. During normal production, any discontinuity in the tubular product that produces a signal equal to or greater than the established threshold will activate a combination of audio and visual indications as well as signal location marking and sorting systems.

Weld Zone Ultrasonic Testing (Standard)

Weld Zone ultrasonic testing is performed to ASTM A450 requirements and in accordance with practice E 273. The weld zone ultrasonic test method employs multiple transducers, positioned in static locations on opposite sides weld seam. The transducers utilize piezoelectric crystals that transmit and receive sound. An electrical impulse is sent to the crystal, causing it to vibrate at a specific frequency and emit a beam of ultrasonic waves. A coupling, typically water, is use to transfer the beam to the tube. The beam enters the tube wall at an angel, and travels through the weld seam reflecting from the inner wall to the outer wall as it proceeds. A discontinuity in the weld zone will reflect some of the beam back to the transducer crystal, which causes it to vibrate. The vibration is converted back to an electrical impulse, providing an indication on an electronic display. The system is calibrated to a reference standard, (a sample tube of the same size and material as the product to be tested). The reference standard contains machined artificial discontinuities. Shape and dimensions of the discontinuity are closely controlled to specification requirements. The transducers are carefully positioned on the reference standard in relation to the artificial discontinuities. The magnitude of the signal produced by the artificial discontinuities is adjusted to a threshold level. During normal production, a discontinuity in the weld zone that produces a signal equal to or greater than the established threshold will activate a combination of audio and visual indications as well as signal location marking and sorting systems.

Full Body Ultrasonic Testing (Non-Standard)

Full body ultrasonic testing is performed to ASTM A450 requirements and in accordance with practice E 213. The full body ultrasonic test method employs multiple transducers, positioned on opposite sides of the tube that rotate around the tube at a high rate of speed. The transducers utilize piezoelectric crystals that transmit and receive sound. An electrical impulse Ultrasonic Testing

is sent to the crystal, causing it to vibrate at a specific frequency and emit a beam of ultrasonic waves. A coupling, typically water, is use to transfer the beam to the tube. The beam enters the tube wall at an angle, and travels around the tube reflecting from the inner wall to the outer wall as it proceeds. A discontinuity in the tube wall will reflect some of the beam back to the transducer crystal, which causes it to vibrate. The vibration is converted back to an electrical impulse, providing an indication on an electronic display. The system is calibrated to a reference standard, (a sample tube of the same size and material as the product to be tested). The reference standard contains machined artificial discontinuities. Shape and dimensions of the discontinuity are closely controlled to specification requirements. The reference standard is passed through the rotating transducers. The magnitude of the signal produced by the artificial discontinuities is adjusted to a threshold level. During normal production, any discontinuity in the tubular product that produces a signal equal to or greater than the established threshold will activate a combination of audio and visual indications as well as signal location marking and sorting systems.

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Recent News

Webco Industries, Inc. Reports Fiscal 2009 Fourth Quarter and Year-End Results
For its fiscal 2009 fourth quarter, the Company reported a net loss of $16,000, or a loss of $0.02 per diluted share, compared to net income of $5,345,000, or $7.02 per diluted share, for the same quarter in fiscal 2008. [ 10/13/2009 ] Read More...

Webco Industries, Inc. Reports Fiscal 2009 Third Quarter Results
For its fiscal 2009 third quarter, the Company reported a net loss of $2,993,000, or a loss $3.93 per diluted share, compared to net income of $3,417,000, or $4.49 per diluted share, for the same quarter in fiscal 2008. [ 6/8/2009 ] Read More...

Webco Industries, Inc. Reports Fiscal 2009 Second Quarter Results
For its fiscal 2009 second quarter, the Company reported a net loss of $4,993,000, or $6.54 per diluted share, compared to net income of $3,514,000, or $4.63 per diluted share, for the same quarter in fiscal 2008. [ 3/11/2009 ] Read More...

Webco Industries, Inc. Reports Fiscal 2009 First Quarter Results
For its fiscal 2009 first quarter, the Company reported net income of $5,083,000, or $6.65 per diluted share, compared to $4,657,000, or $6.14 per diluted share, for the same quarter in fiscal 2008. [ 12/1/2008 ] Read More...

Webco Industries, Inc. Reports Fiscal 2008 Fourth Quarter and Year-End Results
For its fiscal 2008 fourth quarter, the Company reported net income of $5,345,000, or $7.02 per diluted share, compared to $2,887,000, or $3.81 per diluted share, for the same quarter in fiscal 2007. [ 10/6/2008 ] Read More...


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