Category: Welding
2026-10-26
Welding Procedure Qualification and Welder Certification: What WPS, PQR, and WPQ Really Mean
When sheet metal welded products enter fields with high safety and traceability requirements—cabinets, rail transit, pressure equipment, new energy, and medical equipment—customers and third-party auditors often raise one requirement: provide welding procedure qualification records and welder qualification certificates. Many sheet metal companies have previously produced parts based only on the skill of an experienced welder, […]
Read More →2026-10-13
Weld Dressing and Cosmetic Finishing: From “Welded” to “Invisible”
In sheet metal welding, the welding pass only completes the structural joint. What actually determines how a product looks is the post-weld treatment. The same weld seam may appear as an obvious welded joint when left untreated, or be virtually invisible when properly dressed. This is the value of weld dressing and cosmetic finishing. Many […]
Read More →2026-09-08
TIG Welding vs. Conventional Welding: Differences and Applications
In sheet metal fabrication, “TIG welding” and “conventional welding” are often treated as the same thing. In reality, they use different principles, produce different results, and serve different applications. Many beginners choose a welding method by simply using whatever equipment is available, which often leads to unsatisfactory weld quality. Based on the production experience of […]
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