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As the name suggests, resistance welding is a method in which pressure is applied through electrodes after the welding parts are assembled, and the resistance heat generated by current passing through the contact surface of the joint and adjacent areas is used for welding. High-frequency welding: When high-frequency current passes through a metal conductor, two peculiar effects will be produced: skin effect and proximity effect. High-frequency welding uses these two effects to weld steel pipes. These two effects are used to achieve metal The basics of high-frequency welding.

When the spiral steel pipe is blocked, it will not only affect our use but also have a certain corrosion effect on some materials inside the spiral steel pipe. Therefore, it will have very bad effects if it is not cleared in time.

Capillary stainless steel tubes generally refer to thin tubes with an inner diameter of less than or equal to 1 mm. Because the diameter of such tubes is as thin as hair, they are called capillary tubes. Its use cases include medicine, building materials, automation instrument signal tubes, instrument wire protection tubes; precision optical ruler lines, industrial sensors, electronic equipment line protection tubes; electrical circuit safety protection, thermal instrument capillary protection, and hollow-core high-voltage optical cables. Internal support application.

A practical procurement checklist for B2B global steel buyers. Master chemical composition tolerances, mechanical tensile testing, ultrasonic non-destructive testing (NDT), EN 10204 3.1 certification, and seaworthy export packaging to eliminate sourcing risks.

Understand the critical distinctions between Hot-Dip Galvanized (GI), Galvalume (GL/Aluzinc), and Pre-Painted Galvanized Iron (PPGI/PPGL) coils. Explore coating mass standards (Z60-Z275, AZ50-AZ150) and topcoat paint systems for roofing and cladding.

Discover the key engineering differences, manufacturing processes, and application scenarios among Seamless, ERW, LSAW, and SSAW steel pipes under API 5L and ASTM standards. Learn how to optimize project costs while meeting stringent pressure and structural requirements.