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NDT Images - Carestream Health

ndt.carestream.com NDT Images AN OVERVIEW Your guide to proper processing and interpretation of radiography films for ... understand a wide variety of casting and welding defects that appear on images obtained during images will be compromised. Often, those Non-Destructive Testing (NDT).

http://www.carestream.com/ndt-Image_Guide.pdf

Date added: October 2, 2012 - Views: 30

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Recognition of Welding Defects in Radiographic Images by ...

Res. J. Appl. Sci. Eng. Technol., 2(3): 295-301, 2010 297 (a) Slag inclusions (b) Porosity (c) Incomplete penetration Fig. 1: Image after preprocessing

http://www.maxwellsci.com/print/rjaset/v2-295-301.pdf

Date added: November 6, 2011 - Views: 47

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Detection of Welding Defects using S-TOFD and Digital Image ...

images from actual readings taken by Shear-wave Time of Flight Diffraction (s-TOFD) technique have also been presented with their respective processed results. General ... Detection of Welding Defects using S-TOFD and Digital Image Processing Techniques

http://research.ijcaonline.org/volume48/number1/pxc3879909.pdf

Date added: May 3, 2013 - Views: 15

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A METHOD FOR DETECTION WELDING DEFECTS IN RADIOGRAPHIC IMAGES

A method for detection welding defects in radiographic images 309 International Journal of Machine Intelligence ISSN: 0975–2927 & E-ISSN: 0975–9166, Volume 3, Issue 4, 2011

http://www.bioinfopublication.org/files/articles/3_4_24_IJMI.pdf

Date added: October 25, 2013 - Views: 6

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CLASSIFICATION OF WELDING DEFECTS IN RADIOGRAPHS USING ...

Abstract: In patterns recognition applied to welding defects in digitized radiographic images, there are two research fields basically: ... G.X. Padua et al “Detection of Welding Defects on Radiographic Patterns Using Artificial Neural Networks”. 3rd PANNDT. June 2003.

http://www.ndt.net/article/wcndt2004/pdf/radiography/715_padua.pdf

Date added: December 30, 2011 - Views: 22

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9. Welding Defects

9. Welding Defects 109 A distinction of arising defects by their origin is shown in Figure 9.5. The development of the most important welding defects is explained in the following paragraphs.

http://mercury.kau.ac.kr/welding/Welding%20Technology%20II%20-%20Welding%20Metallurgy/Chapter%209%20-%20Welding%20Defects.pdf

Date added: February 20, 2012 - Views: 461

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Lecture 6 Weldability and defects in weldments

Weldability and defects in weldments Subjects of Interest •Reviews of weld design and weldability •Residual stresses and weld distortion •Weld metal inhomogeneities

http://eng.sut.ac.th/metal/images/stories/pdf/06_%20Weldability%20and%20defects%20in%20weldments.pdf

Date added: May 18, 2012 - Views: 135

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Automatic Defect Detection and Counting In Radiographic ...

considering defects in weldment images as object of interest. To detect defects in radiographic weldment images, ... A Mahmoudi and al. A novel method for welding defects detection in radiographic images. In 4th International Symposium on Image/Video

http://www.ijcaonline.org/volume10/number2/pxc3871971.pdf

Date added: May 23, 2013 - Views: 2

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Image Thresholding for Weld Defect Extraction in Industrial ...

in the case of the radiographic images of welded joints that the major part of images presents complicated shape histograms due to several factors ... “Evaluation of the relevant features of welding defects in radiographic inspection,” Materials Research, vol. 6, n° 3, pp.

http://waset.org/publications/12939/image-thresholding-for-weld-defect-extractionin-industrial-radiographic-testing

Date added: January 10, 2014 - Views: 1

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Shielding gas . Gases for all types of stainless steel .

used for TIG welding stainless steel than for steel, but not all gas mixtures are suitable for all material types, i. e. hydrogen ... the scrapping or repairing of welding defects can be a significant cost and must be avoided.

http://www.linde-gas.com/internet.global.lindegas.global/en/images/Shielding_gases_for_stainless_steel_60785_1217_82204.pdf

Date added: May 11, 2013 - Views: 4

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Contour Estimation in Synthetic and Real Weld Defect Images ...

the primary classification of the weld defects in radiogram images (planer defect, volumetric defect), through image analysis by geometric invariant moments. In [7], the authors use the adaptive thresholding to extract the weld defect in

http://waset.org/publications/12045/contour-estimation-in-synthetic-and-real-weld-defect-images-based-on-maximum-likelihood

Date added: December 11, 2013 - Views: 1

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Volume 1, Issue 6, June 2012 An Innovative Method for Defect ...

welding defects in radiographic images by using image processing techniques, including noise reduction, contrast enhancement, thresholding and labeling, were implemented to help in the recognition of weld regions and the detection of weld ...

http://www.ijeit.com/vol%201/Issue%206/IJEIT1412201206_35.pdf

Date added: August 3, 2013 - Views: 3

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A Review on Inspection of welding defects using Segmentation ...

A Review on Inspection of welding defects using Segmentation Techniques A.Nirmala , V.Sridevi . ... ographic images with classical level set methods, the propagating front may not be able to capture the real boundaries. The enhanced

http://www.ijser.org/researchpaper/A-Review-on-Inspection-of-welding-defects-using-Segmentation-Techniques.pdf

Date added: March 8, 2014 - Views: 1

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Steel Surface Defects Detection and Classification

Surface Defects on Rolled Steel Using Computer Vision and Artificial Neural ... X., Wong, B. S., Tan, C. S.: Recognition of Welding Defects in Radiographic Images by Using Support Vector Machine Classifier. Research Journal of Applied Sciences, Engineering and Technology, Vol. 2, No.3 ...

http://onlinepresent.org/proceedings/vol3_2012/53.pdf

Date added: March 13, 2013 - Views: 19

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Weld assessments and weld properties - :: สำนัก ...

Weld assessments •Weldments normally contain defects. However we need to keep weld defects at a minimum level to maintain reliable products. Pressure vessel weld joint heat treatment

http://eng.sut.ac.th/metal/images/stories/pdf/07_%20Weld%20porperties%20and%20assessment.pdf

Date added: November 6, 2012 - Views: 13

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Development of An Automated Inspection System for Welding ...

quality of radiographic images is a key factor for detecting the welding defects. Therefore, varying the luminances of the film illuminator ... identifying the non-welding flaws where the welding defects do not occur. The non-welding flaws are

http://eprints.usm.my/14796/1/paper3.pdf

Date added: February 20, 2012 - Views: 18

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Segmentation of Weld Defects in X-ray Image Based on Partial ...

Segmentation of Weld Defects in X-ray Image Based on Partial Surface Reconstruction Runshi HOU, Dong DU, Jiaxin SHAO, Li AW NG, ... Liao T W. Automatic Identification of Different Types of Welding Defects In Radiographic Images[J] .NDT and E International, 2002, 35(8): 519 ~528.

http://www.ndt.net/article/wcndt2008/papers/27.pdf

Date added: February 20, 2012 - Views: 10

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Quality Level Assessment for Imperfections in GMAW

welding defects in radiographic images by using support vector machine classifier. Research Journal of Applied Sciences, Engineering and Technology 2(3): 295–301. 11. Kumar, Rajneesh, et al. 2005. Applica-tion of digital image magnification for surface

http://www.aws.org/wj/supplement/WJ_2014_03_s85.pdf

Date added: March 20, 2014 - Views: 2

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CLASSIFICATION OF WELDING DEFECTS IN RADIOGRAPHS USING ...

CLASSIFICATION OF WELDING DEFECTS IN RADIOGRAPHS USING TRAVERSAL PROFILES TO THE WELD SEAM G. X. Padua 1, ... Wang, G, Li ao, T. W. Automatic Identification of Different Types of Welding Defects in Radiographic Images. NDT&E International 2002; 35: 519-528. 5. R. R.

http://www.romeu.eng.br/WCNDT2004_Germano_final.pdf

Date added: July 24, 2013 - Views: 2

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www.iosrjen.org A Novel Approach for Automatic Detection of ...

Researchers have done extensive work on welding defects evaluation in radiographic testing. Suhaila Abd Halim et al. [1] ... “Hierarchical Segmentation Approach to Detection of Defects on Welding Radiographic Images”,

http://www.iosrjen.org/Papers/vol2_issue6%20(part-2)/A0260105.pdf

Date added: March 15, 2013 - Views: 1

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Segmentation of welding defects using - :: www.viZZion.cl ::

Segmentation of welding defects using a robust algorithm Miguel Carrasco1 and Domingo Mery2* 1 Departamento de Ingeniería Informática Universidad de Santiago de Chile

http://www.vizzion.cl/files/CarrascoMery_MEVAL.pdf

Date added: April 2, 2012 - Views: 14

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Defects detection in X-ray images and photos - ResearchGate

Defects detection in X-ray images and photos ROUMEN KOUNTCHEV Department of Radio Communications Technical University of Sofia ... of welding defects in real-time radiography. Non-Destructive Testing International, V. 23, No. 4, 1990,

http://www.researchgate.net/profile/Roumen_Kountchev/publication/228638382_Defects_detection_in_X-ray_images_and_photos/file/79e41510bfcc86b049.pdf

Date added: February 22, 2014 - Views: 3

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APPLICATION OF ARTIFICIAL NEURAL NETWORKS TO EVALUATE WELD ...

APPLICATION OF ARTIFICIAL NEURAL NETWORKS TO EVALUATE WELD DEFECTS OF NUCLEAR COMPONENTS ... Although Radiographic testing is widely used for welding defects, ... images is LVQ and RB neural networks. RADIAL BASIS NETWORK

http://www.physicsegypt.org/jnrp/v3n202.pdf

Date added: March 17, 2012 - Views: 60

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WELDING DEFECT PATTERN RECOGNITION IN RADIOGRAPHIC IMAGES OF ...

2 1. ABSTRACT: In this paper a new method for automatic recognition and separation between defected radiographic images of welds and correct ones is introduced.

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.96.3726&rep=rep1&type=pdf

Date added: December 17, 2011 - Views: 13

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New Jersey Section News - American Welding Society

New Jersey Section April Meeting Info —AWS NJ Section News April, 2014— Come out Earn Professional Development Hours Make valuable contacts Gain knowledge

http://sections.aws.org/newjersey/images/AWSNJApril2014.pdf

Date added: April 25, 2014 - Views: 2

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The Mechanisms of Formation of Weld Defects in High-Frequency ...

The Mechanisms of Formation of Weld Defects in High-Frequency Electric Resistance Welding The two kinds of defects associated with previously defined welding

http://www.aws.org/wj/supplement/WJ_1981_06_s104.pdf

Date added: July 3, 2013 - Views: 4

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Butt welds - Size

Root Welding Defects. Root L.O.F Causes Too small a root gap Arc too long Wrong polarity Electrode too large for joint preparation ... • Poor welding technique A shallow groove caused by contraction in the weld metal along each side of the penetration bead or

http://petropipe.epage.ir/images/petropipe/content/%D8%AC%D9%88%D8%B4/Weld%20Defect.pdf

Date added: March 9, 2014 - Views: 7

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Welding Analysis

CLEMEX Welding Analysis Image Analysis Report # 692 ... defects are potentially disastrous, and quality control serves to identify the defect, find the cause, ... 1 Images taken during the procedure are available in appendix A

http://www.clemex.com/clemex/media/assets/pdf/Applications/Image-Analysis-Reports/692_WeldingAnalysis.pdf

Date added: May 26, 2013 - Views: 3

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Radiographics pattern recognition of welding defects using ...

Radiographics pattern recognition of welding defects using linear classifiers R R da Silva, M H S Siqueira, ... (there are also equipments that generate digital images directly during the test[9]), a stage of the images preprocessing (application

http://www.romeu.eng.br/Insight_2001.pdf

Date added: July 24, 2013 - Views: 1

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Automatic detection of welding defects using texture features

Detection of welding defects using a pattern recognition schema ... types of welding defects in radiographic images. NDT&E International, 35(2002):519-528. Enquiry No 310-13 Enquiry No 310-12. Title: Mery Created Date: 9/11/2003 3:22:40 PM ...

http://web.ing.puc.cl/~dmery/Prints/ISI-Journals/2003-Insight-b.pdf

Date added: May 11, 2013 - Views: 4

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New Jersey Section News November, 2012 - American Welding ...

Welding Defects Speaker: Robert F. Waite, PE, CWI The presentation will cover weld inspection re-quirements under the International Building Code (IBC), The AISC Steel Construction Manual, and AWS D1.1 Structural Welding Code. Mr. Waite will ...

http://sections.aws.org/newjersey/images/AWSwebNovember2012.pdf

Date added: December 22, 2012 - Views: 3

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spot weld deffects - Bing

Common Welding Defects Welding Defects and Causes Arc Welding Defects Spot Welding Procedure Spot Welding Process ... Lack of Penetration, Porosity, Slag inclusions, Undercuts are example of weld defects, Which lead to failure joint. Images of spot weld deffects bing.com/images

http://pdfdirpp.com/download/spot-weld-deffects.pdf

Date added: June 4, 2014 - Views: 1

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Detection of Weld Line Defect for Oil-gas Pipeline Based on X ...

Abstract—The optimal threshold method is used for the x-ray welding image segmentation in this paper. ... But the images of x-ray imaging system in actual industrial production are often more ... Research about Weld Defects of Computer pattern recognition method [A].

http://www.academypublisher.com/proc/wisa09/papers/wisa09p273.pdf

Date added: May 8, 2012 - Views: 8

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STATE-OF-THE-ART OF MONITORING AND IMAGING OF LASER WELDING ...

to information on the process dynamics in context with the generation of welding defects. Cameras provide images of the top weld pool and keyhole geometry, while photodiode sensors and pyrometers provide more abstract, as information-integrated, but industrially

http://www.datlas.se/web/PDF/State-of-the-art_of_monitoring_and_imaging_of_laser_welding.pdf

Date added: May 27, 2013 - Views: 2

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A VARIOUS FLAWS DETECTION USING SEGMENTATION TECHNIQUES IN ...

KEYWORDS: Radiographic images weld flaws; segmentation techniques; edge-based segmentation; region growing; watershed segmentation; SVM; ANN. I. ... implemented to detect welding defects in radiographic images. After extracting potential defects, two

http://www.e-ijaet.org/media/0001/81I8-IJAET0703820-ANALYSIS-OF-VARIOUS-FLAWS.pdf

Date added: August 31, 2013 - Views: 2

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NDT Images - Badania nieniszczące - forum :: Strona Główna

understand a wide variety of casting and welding defects that appear on images obtained during Non-Destructive Testing (NDT). FILM HANDLING ARTIFACTS While many factors can affect image quality,macroscopic defects known as artifacts are sometimes produced

http://www.ndt-imbn.com/portal/component/option,com_docman/task,doc_view/gid,30/Itemid,84/

Date added: October 3, 2013 - Views: 1

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Automated Weld Defects Detection Using Image Processing and ...

controlling different welding defects. The main purpose of this project is omission of the human interference in Visual Test of ... m the images erence model e defects. In m on a section a CCD camera ter the image nd the profile on matrix we f dimensions acted segment

http://profdoc.um.ac.ir/articles/a/1008883.pdf

Date added: May 8, 2013 - Views: 2

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CORRELATION BETWEEN PHOTODIODE MONITORING AND HIGH SPEED ...

CORRELATION BETWEEN PHOTODIODE MONITORING AND HIGH SPEED IMAGING OF THE DYNAMICS CAUSING LASER WELDING DEFECTS Paper 1708 Peter Norman, Hans Engström, Per Gren, Alexander F. H. Kaplan

http://www.datlas.se/web/PDF/CORRELATION_BETWEEN_PHOTODIODE_MONITORING_AND_HIGH_SPEED_IMAING.pdf

Date added: May 23, 2013 - Views: 1

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Automated Detection of Welding Defects without Segmentation

Automated Detection of Welding Defects without Segmentation Domingo Mery Pontificia Universidad Catolica de Chile Av. Vicuna Mackenna 4860(143), ... on 10 representative X-ray images yielding a performance of 94% in accuracy using only 14 features and support vector machines.

http://web.ing.puc.cl/~dmery/Prints/ISI-Journals/2011-MatEval-Welding.pdf

Date added: May 23, 2013 - Views: 2

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to the Typical Defects of Crystalline Photovoltaic Cells ...

over welding, the EL images of which have been ... mechanism, harm and resolution of those images, then the solution to defects is applied to productive practice of ...

http://www.ijesci.org/Download.aspx?ID=7791

Date added: June 26, 2013 - Views: 1

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Defect detection in partially complete SAW and TIG welds ...

An application of machine vision applied to the analysis of radioscopic images of incomplete weld geometries ... Methods for Flaw Detection During Welding’ which has been directed at the development and evaluation of techniques for the detection of defects during the welding process.

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.128.4215&rep=rep1&type=pdf

Date added: February 26, 2014 - Views: 1

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Study and characterization of welding defects during ...

Study and characterization of welding defects during manufacturing AISInSAE 1008 carbon steel vessels F.S. Montejano, ... 1008 carbon steel vessels through the submerged arc welding ... SEM images showing (a) Integranular fracture (100X),

http://www.menawelding.org/wp-content/uploads/2013/05/1008-steel-defects.pdf

Date added: July 24, 2013 - Views: 10

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An Automatic Welding Defects Classifier System

In this paper, we describe an automatic detection system to recognise welding defects in radiographic images. In a first stage, image processing techniques, including noise reduction, contrast enhancement, thresholding and labelling were implemented to help in the

http://repositorio.bib.upct.es/dspace/bitstream/10317/874/1/awd.pdf

Date added: August 31, 2013 - Views: 1

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EXAMINATION OF WELD DEFECTS BY COMPUTED TOMOGRAPHY

DEFECTS BY COMPUTED TOMOGRAPHY Received – Prispjelo: 2011-04-18 Accepted ... Welding speed has the highest impact on the energy input [3]. ... ture individual images which were processed by Image Tool. In this way, ...

http://public.carnet.hr/metalurg/Metalurgija/2012_vol_51/No_2/MET_51_2_233-236_Jovanovic.pdf

Date added: May 15, 2013 - Views: 5

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A Region-Based Model and Binary Level Set Function Applied to ...

Weld Defects Detection in Radiographic Images Yamina Boutiche ... to detect the welding defects and to calculate necessary information such as length, width, area and perimeter of the defects. This paper is concerned with image ...

http://sdiwc.net/digital-library/web-admin/upload-pdf/00000020.pdf

Date added: December 11, 2013 - Views: 1

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Vessel Failures 2 Rupture Hazard of Pressure Vessel Images of ...

Images of Pressure Vessel Failures An internal non-code weld had weakened the shell of this vessel. ... involving welding and annealing that ... defects, and testing according to the NBIC

http://www.epa.gov/region10/pdf/rmp/cepp_newsletter_0308.pdf

Date added: March 24, 2012 - Views: 23

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Overview of shielding gases - Linde Gas

For instance, adding oxygen and/or carbon dioxide to a shielding gas for MAG welding carbon steel increases its oxidation potential. In general, ... these welds can suffer from greater numbers of fusion defects than those made from gases with higher oxidation potentials.

http://www.linde-gas.com/internet.global.lindegas.global/en/images/Overview_of_shielding_gases_60734_1217_82202.pdf

Date added: May 7, 2013 - Views: 1

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Guidebook for the Fabrication of Non-Destructive Testing (NDT ...

specimens having standard known dimensions and in-laid artificial defects simulating the real ... TECHNOLOGY OF WELDING ... NON-DESTRUCTIVE TESTING: BASIC OVERVIEW OF COMMON METHODS 1.1. INTRODUCTION

http://www-pub.iaea.org/MTCD/publications/PDF/TCS-13.pdf

Date added: December 20, 2011 - Views: 84

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Improvement of Radiographic Test Method on 9% Ni Steel Welds ...

In the case of volumetric defects, their images may not disappear but become more distinctive when the radiation ... By these methods, unnecessary welding repairs because of false defects may be reduced, and efficiency can be improved not only in terms of time but also in

http://www.allriskengineering.com/library_files/AIChe_conferences/AIChe_2008/data/papers/P114521.pdf

Date added: May 2, 2014 - Views: 1

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WELDING POSITIONER - Profax - Home

LIMITED WARRANTY: Subject to the terms and conditions hereof, PROFAX, Pearland, TX warrants its products to be free from defects in workmanship and material at the time of delivery by PROFAX. ... The PROFAX Welding Positioner is designed for light loads, ...

http://profax-lenco.com/profax/images/Manual/Manuals/00317.pdf

Date added: May 16, 2013 - Views: 9