Service Introduction
Conduct physical and chemical testing or non-destructive testing on steel plates, section steels, welding consumables, castings, forgings, welds, etc. used in the manufacturing, installation and maintenance of boilers, pressure vessels, pressure pipelines, LNG railway tank cars and amusement equipment, and assist enterprises to control the quality of special equipment.
Scope of application
Radiographic inspection: metal melting and welding joints suitable for pressure equipment, including steel, copper and copper alloys, aluminum and aluminum alloys, titanium and titanium alloys, nickel and nickel alloys; The joint types include butt joints of plates and pipes, butt welds of plug-in and placed pipe fillet joints, and pipe-tube sheet fillet welds.
Ultrasonic testing: It is suitable for ultrasonic testing of raw materials or parts and welded joints for pressure equipment made of metal materials, and also suitable for ultrasonic testing of pressure equipment made of metal materials and ultrasonic measurement of material thickness. Plates include carbon steel, low-alloy steel, aluminium and aluminium alloys, titanium and titanium alloys, nickel and nickel alloys, copper and copper alloys; Composite steel plates include stainless steel-steel, titanium-steel, aluminum-steel, nickel-steel, copper-steel; Steel forgings include carbon steel, low alloy steel; carbon steel and low-alloy steel bolt embryos with a diameter greater than or equal to 36M; Stainless steel forgings include austenitic stainless steel, austenitic-ferritic duplex stainless steel; Seamless steel pipes include carbon steel, low-alloy steel, austenitic stainless steel, austenitic-ferritic duplex stainless steel; carbon steel, low alloy steel, stainless steel welded joints; The surfacing layer includes austenitic stainless steel, nickel alloy and other surfacing layers.
Magnetic particle inspection: It is suitable for the detection of surface or near-surface defects such as plates, pipes, pipe fittings and forgings made of ferromagnetic materials, as well as the detection of surface or near-surface defects such as butt joints, T-welded joints and corner joints of ferromagnetic materials, but is not suitable for the detection of non-ferrous materials.
Penetrant testing: It is suitable for the detection of surface opening defects generated in the manufacture, installation and use of pressure equipment made of non-porous metal materials.
TOFD: It is suitable for testing the butt joints of the fully welded penetration structure type with the nominal thickness of the workpiece of 12mm~400mm and the material is low carbon steel or low alloy steel; It can detect stainless steel-steel composite plate, titanium-steel composite plate, aluminum-steel composite plate and nickel-steel composite plate for pressure equipment with a nominal thickness of more than or equal to 12mm of the base material (low carbon steel or low alloy steel); It can detect the pressure equipment of the surfacing layer such as austenitic stainless steel and nickel alloy for pressure equipment with a nominal thickness of more than or equal to 12mm of the base material (low carbon steel or low alloy steel).
Service Content
| Defect Types | Classification | Specific |
| Welding Defects | Burn-through |
Radiographic testing (RT), Ultrasonic testing (UT) with angle beam, Time-of-Flight Diffraction (TOFD)
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| Crecks | Penetrant testing (PT), Magnetic particle testing (MT), Radiographic testing (RT), Ultrasonic testing (UT) with angle beam, Time-of-Flight Diffraction (TOFD) | |
| Inclusions |
Penetrant testing (PT), Magnetic particle testing (MT), Radiographic testing (RT), Ultrasonic testing (UT) with angle beam, Time-of-Flight Diffraction (TOFD)
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| Incomplete fusion |
Magnetic particle testing (MT), Radiographic testing (RT), Ultrasonic testing (UT) with angle beam, Time-of-Flight Diffraction (TOFD)
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| Incomplete penetration | Penetrant testing (PT), Magnetic particle testing (MT), Radiographic testing (RT), Ultrasonic testing (UT) with angle beam, Time-of-Flight Diffraction (TOFD) | |
| Weld bead irregularities | Penetrant testing (PT), Magnetic particle testing (MT), Radiographic testing (RT), Time-of-Flight Diffraction (TOFD) | |
| Porosity | Penetrant testing (PT), Radiographic testing (RT), Ultrasonic testing (UT) with angle beam, Time-of-Flight Diffraction (TOFD) | |
| Undercut | Penetrant testing (PT), Magnetic particle testing (MT), Radiographic testing (RT), Ultrasonic testing (UT) with angle beam | |
| Defects Arising from Product Formation |
Cracks (all product formations) |
Penetrant testing (PT), Magnetic particle testing (MT), Radiographic testing (RT), Ultrasonic testing (UT) with angle beam
|
| Inclusions (all product formations) |
Magnetic particle testing (MT), Radiographic testing (RT), Ultrasonic testing (UT) with angle/straight beam
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|
| Laminations (plates, pipes) |
Penetrant testing (PT), Magnetic particle testing (MT), Ultrasonic testing (UT) with straight beam
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| Scale (forgings) |
Penetrant testing (PT), Magnetic particle testing (MT), Radiographic testing (RT)
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| Gas porosity (castings) |
Penetrant testing (PT), Radiographic testing (RT)
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| Defects Arising from Use |
Pitting corrosion |
Penetrant testing (PT), Magnetic particle testing (MT), Radiographic testing (RT), Ultrasonic testing (UT) with straight beam
|
| Localized corrosion |
Penetrant testing (PT), Ultrasonic testing (UT) with straight beam, Time-of-Flight Diffraction (TOFD)
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| Cracks |
Penetrant testing (PT), Magnetic particle testing (MT), Radiographic testing (RT), Ultrasonic testing (UT) with angle beam, Time-of-Flight Diffraction (TOFD)
|
Get Your Free Testing Plans and Quotation
Ask professional engineers for on-line service, and obtain testing proposals within 2 hours.
Six Reasons to Choose DTI
Complete Qualifications
Complete QualificationsDTI has CMA, CNAS and other qualifications, including China's domestic and global relatively comprehensive leading qualifications at metal materials and corrosion test field. We can provide authoritative reports of national standard and industrial standard.
For DetailsProfessional Team
70% of the Personnel are Professional TechniciansDTI has a professional testing team, with 70% of professional technicians and 70% of undergraduate degree or above. From drafting proposals to sample analysis issuance, we are professional at each step to ensure the precision.
Learn MoreAdvanced Equipment
400 Units in Total, 92% Imported UnitsDTI has invested affluent budgets onto 450 sets of advanced large and medium-sized testing equipment. 92% of the equipment are imported from the U.S., Germany, Switzerland, installed at scores of labs cover an area of 8,000 m2 and services cover 1000+ segments.
See MoreAccurate Data
Accuracy Ratio Reaches 99%With the endeavour of professional technical testing team, advanced equipment, large number of databases, and solid implementation of lab quality control, DTI guarantees the overall accuracy rate of the reliable analysis data up to 99%.
Learn MoreComprehensive Service
One-stop Tracking ServiceDTI services cover the whole industries and provides the optimal solutions and technical support in terms of cycle time,cost-saving and qualifications based on numerous indicators, E2E supply chain solutions, all-round multi-dimensional product analysis.
Our ServicesCustomer Service
Regular visits and re-inspection are availableDTI 24*7 hours (China) service is available so that you could reach us anytime, anywhere. We also have an Emergency Service Access in case of special circumstance. DTI team visit their customers regularly each year, and the issued questionable report or items in reports can be repeated for free of charge. Moreover, the systematic training courses is also available so that our customers would be free of anxiety.
Consult NowOnly Four Steps to Get Your Reports
Issues You May Care About
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A. DTI has a comprehensive range of instruments and equipment, as well as numerous engineers with over 10 years of experience.
B. We offer consultative services with a broad industry scope, tailoring solutions to meet customer needs.
C. We provide one-stop technical services in the environmental field, with dedicated personnel throughout the process, allowing customers to stay informed about the progress of their reports in real time.
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A. Normally, we will issue a report within 5-7 working days after receiving the samples.
B. To expedite the report issuance and eliminate extensive manual processing steps, DTI employs collaborative efforts across multiple departments and utilizes automated sample handling technology for certain types of samples, making the reports faster and more accurate.
C. For clients who urgently need the report, expedited services are available.
D. The report issuance time varies depending on the specific type of product, and you can consult with our online customer service for details.
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DTI’s test data obtained from experiments are all true and valid, and will not maliciously alter or forge test data. The test reports issued by DTI are authoritative and credible and are recognized both in China and other countries.
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The specific standards vary depending on the testing items. Please consult online customer service for details.
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Our company promises that all test data obtained from the experiment are true and valid, and will not maliciously alter or falsify the test data. If any customer has any questions about the test data obtained from the experiment, please contact our technical staff, and our company will conduct a free re-inspection for the customer. If the data obtained after the replicated test are the same as the results of the initial test, our company will not change the test results. If they are different from the results of the initial test, our company will conduct multiple experiments on the samples during this period, and finally determine the results. Stable experimental data is used as the final test result.
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Due to the large amount of standard information and other reasons, many customers may not know what items need to be tested. In this case, we could provide customers with recommendations for related projects, but the customers are required to provide the following information:
1.Provide a detailed introduction of the product, especially its intended use.
2. Provide the general requirements for testing, for instance, is it for environmental compliance
3. Other information, such as a sample of the test report.
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Learn about Ding Testing & Inspection
DTI has served thousands of entities, including numbers of Fortune Global 500 enterprises. DTI always conveys trustfulness to the quality life ubiquitously.
DTI is devotional on providing services for metal comprehensive testing. Among the testing services, DTI has more advantage at implementation of various corrosion resistance tests for different type of materials. The range of testing capability includes the analysis of metal composition and metal metallographic, mechanical performance and metal corrosion resistance testing, failure analysis, R & D analysis, and product quality assessment etc.
DTI has been awarded the conformity of assessment from ISO/IEC17025, ISO9001, GB/T28001/OHSAS18001, GB/T14001/ISO14001, CNAS and CMA Certification.
- 30Nos.
Industrial Fields
- 200Nos.
Large Equipment
- 3K㎡
Lab Area Size
- 1KNos.
Clients Served
To be an influential, authoritative, third-party testing organization in China.
We provide professional inspection, testing, analysis for upstream and downstream supply chain of various industries, which covers industrial manufacturing, chemicals, offshore engineering, oil & gas, wind power, hydrogen energy, nuclear power, automotive structures, metals and minerals, equipment manufacturing, construction machinery, aerospace, etc.
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