What Welding Quality Aspects Need to Be Checked in Steel Parts Processing?
Sep 10, 2025
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In steel parts processing, welding quality inspection is a critical step that directly affects the overall quality and safety of the parts. Below are the main aspects of welding quality inspection for steel parts, presented clearly and in sections, with reference to relevant numerical information from related articles:
Pre-Welding Inspection
Base Material and Welding Materials:
Check the material type, specifications, quality certificates, etc., of the steel and welding materials to ensure they meet design requirements and relevant standards.
Groove and Assembly:
Inspect the dimensions, shape, and cleanliness of the groove, as well as the gap and misalignment after assembly, to ensure they comply with welding process requirements.
Welding Equipment:
Check the performance and condition of welding equipment (e.g., welding machines, torches), as well as the supply of power and gases.
In-Process Welding Inspection
Welding Parameters:
Verify that welding parameters such as current, voltage, and welding speed are set correctly, and record the actual parameters used during welding.
Welding Operation:
Observe whether the welding operation is standardized, including welding angle, sequence, and weld bead overlap.
Interpass Cleaning:
Ensure that slag, spatter, and other impurities are promptly cleaned after each welding pass to guarantee the quality of subsequent layers.
Post-Welding Inspection
Visual Inspection:
The weld surface should be smooth and even, free from defects such as cracks, slag inclusions, or porosity.
Weld width and height should meet design requirements, with uniform transitions on both sides of the weld.
Check for unacceptable defects such as undercut, incomplete fusion, or root shrinkage.
Dimensional Inspection:
Use measuring tools to check deviations in weld dimensions and shape, ensuring compliance with drawing and specification requirements.
Nondestructive Testing (NDT):
For critical or complex welds, perform nondestructive testing such as X-ray or ultrasonic testing to detect internal defects.
Select the appropriate NDT method and proportion based on the weld grade and requirements. For example, Grade 1 welds should undergo 100% UT (Ultrasonic Testing), while Grade 2 welds may require 20% RT (Radiographic Testing).
Mechanical Performance Tests:
Conduct mechanical tests such as tensile tests or impact tests as needed to evaluate the strength and toughness of the weld.
Records and Reports
Welding Records:
Maintain detailed records of all welding parameters and inspection results for traceability and analysis.
Inspection Report:
Issue a comprehensive welding quality inspection report that clearly indicates the weld quality grade and any identified issues for user reference and use.
Titanium product forms available from GNEE
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Item Name |
china wholesale stock astm b337 b338 gr1 gr2 gr9 titanium pipe titanium tubes seamless |
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Material |
pure titanium and titanium alloy |
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Standard |
ASTM B337, ASTM B338. ASTM B861, ASTM B862 |
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Brand |
China Grades: TA1, TA2, TC4 (Gr5 Equivalent), TA9 (Gr7 Equivalent), TA10 (Gr9 Equivalent), TA18 |
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Shape |
Round Titanium Tube/Pipe, Square Titanium Tube/Pipe, Rectangular Titanium Tube/Pipe, Titanium Coil Tube |
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Type |
Seamless & Welded (ASTM B337/B338 for Industrial & Heat Exchanger Applications) |
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Product name |
Pure Titanium bar/Pure Titanium rod/Titanium alloy bar/Tianium alloy rod |
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Standard |
GB/T 2965-2007 GB/T 13810-2007, ASTM B348,ASTM F67,ASTM F136, AMS4928,MIL4911 |
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Titanium type |
Commercially Pure(CP) / Titanium alloy |
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Grade |
TA1 TA2 TA3 TA4 TA5 TA6 TA7 TA8 TA9 TA10 TA11 TA12 TA13 TA14 |
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Diameter |
3-350mm |
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Length |
Max6000mm |
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Technique |
Forging, machining |
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Surface |
Acid surface or polishing, sand blasted surface |
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Shape |
Round, flat, square, hexagonal |
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Application |
Metallurgy, electronics, medical, chemical, petroleum, pharmaceutical, aerospace, etc. |
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Production Name |
Titanium plate/Titanium sheet |
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Grade |
Gr1, Gr2, Gr3,Gr4,Gr5, Gr7, Gr6,Gr9, Gr11, Gr12 ,Gr16, Gr17,Gr25 |
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Size |
All sizes can be customized |
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Application |
Metallurgy, electronics, machinery, medical treatment, chemical industry, petroleum, medical treatment, aerospace |
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Feature |
High corrosion resistance, low density, good thermal stability |
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Technology |
Hot Forged, Hot Rolled, Cold Rolled, Annealing, Pickling |
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Surface |
Bright, Polished, Pickling, Acid cleaning, Sandblasting |
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Packing |
Export Standard Woodcase |
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Delivery time |
10-25days according to the quantity and process of the product |
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Quality and test |
Hardness test, Bending test, Hydrostatic etc. |
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Product name |
Titanium wire |
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Grade |
GR1,GR2,GR3,GR4,GR5,GR7,GR9,GR11,GR12,GR23 etc.
ERTi-1, ERTi-2, ERTi-3, ERTi-4, ERTi-5, ERTi-7, ERTi-9, ERTi-11, ERTi-12 |
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Size |
Dia：0.1-8mm or customizable |
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Standard |
ASTM B348,ASME SB348,ASTM B863,AWS.A5.16,GB/T3623-2007 |
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MOQ |
10kg |
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Quality and test |
Annealing, Ultrasonic testing |
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Application |
Aerospace, Chemical, Medical, Eye Frames,Welding etc |
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Feature |
High strength,Light weight,Excellent heat conduction and corrosion resistance |
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Condition |
Annealed (M), Hot Worked (R), Cold Worked (Y) |
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Surface |
Bright, Polished, Pickling, Sandblasting |
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Package |
Wooden Box |
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Product Name
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Custom Precision CNC Machining Services
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Material
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Metal: Aluminum, Stainless Steel, Copper, Iron, Titanium Alloy, Zinc Alloy, Magnesium Alloy.
Plastic: Nylon, ABS, POM, PC, PP, PE, PETG, PEEK, PMMA, PVC, UHMW.
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Surface treatment
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Anodizing, Polishing, Electroplating, Powder Coating, Sandblasting, Magnetic Polishing, Spray Painting, Drawing, Embossing, Electrophoresis, Screen Printing, Laser Engraving.
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Process
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3-Axis/4-Axis/5-Axis/6-Axis CNC Milling, CNC Turning
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Application
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Mechanical Spare Parts, Aerospace Components, Automotive Parts, Maintenance Parts
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Maximal Part Size
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3000 mm (118 in)
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Minimal Part Size
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2 mm (0.08 in)
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Drawing format
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DWG, DXF, PDF, SOLIDWORKS, PRT, STP, STEP, IGS, etc.
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Certification
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ISO 9001:2015
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GNEE is a specialized manufacturer and exporter of high-quality titanium products, including pipes, sheets, bars, wires, and fabricated parts.
We utilize advanced CNC machining, rolling, and welding equipment to ensure precision manufacturing. All products undergo strict chemical, mechanical, and non-destructive testing to guarantee compliance with international standards.
Our export-safe packaging includes wooden crates and waterproof wrapping to ensure secure delivery. If you have any needs, please feel free to contact us immediately：info@gneemetal.com
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