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FAQ

  • Q What three criteria must every INWELT cable batch meet?

    A

    Every batch of cables must pass three criteria simultaneously:

    • ✓ Correct cross-sectional area

    • ✓ 99.9% material purity

    • ✓ Stable and controlled resistivity


  • Q Pure copper vs copper-clad aluminium (CCA) — what is the difference?

    A

    INWELT rejects copper-clad aluminium and impurity-containing materials. Pure copper reduces resistance and heat generation across the entire welding circuit — from conductor to connection points — ensuring more stable and continuous current conduction that CCA cables cannot match. Consistent welding performance begins with the most fundamental choice of materials.

  • Q How does pure copper cable improve long-shift welding?

    A

    Pure copper conductors maintain stable arc output under high current, and their excellent thermal conductivity releases heat quickly. This reduces temperature build-up during long, high-load operation — welding performance stays stable even on full shifts.

  • Q What is the difference between an air-cooled and water-cooled TIG torch?

    A

    An air-cooled TIG torch uses ambient air to dissipate heat and generally offers a simpler, lighter setup with fewer components. A water-cooled TIG torch circulates cooling liquid through the torch, allowing it to handle higher current and longer duty cycles with lower torch temperatures. The choice depends mainly on welding current, duty cycle, operating time, torch size and application requirements.

  • Q Why does my plasma nozzle wear out so quickly?

    A

    Rapid plasma nozzle wear can result from incorrect cutting parameters, excessive piercing, incorrect torch height, poor compressed-air quality, moisture or oil contamination, or using the wrong consumables. Maintaining clean gas, correct standoff and proper operating parameters can help extend consumable life.

  • Q How do I choose the right TIG torch consumables?

    A

    Choose TIG torch consumables according to the tungsten electrode diameter, welding current, torch model and application. Common consumables include ceramic cups, collets, collet bodies, gas lenses and back caps. The correct combination should provide stable tungsten positioning, consistent shielding gas coverage and reliable heat resistance. Always check component compatibility before installation.

  • Q Which welding torch does INWELT recommend for shipbuilding?

    A

    Heavy-duty MIG torches and push-pull guns — built for long-reach, high-duty marine fabrication. Featured product: XPW400 push-pull gun.

  • Q How do I choose the right plasma cutting torch?

    A

    Choose a plasma cutting torch according to the plasma power source, cutting current, duty cycle, material type and thickness, cooling method and torch connection. The torch must be compatible with the plasma cutter and its control system. For demanding or continuous cutting applications, consider the torch's rated amperage, thermal management and available consumables to ensure reliable performance.

  • Q How do I choose the correct plasma torch consumables?

    A

    Select plasma torch consumables according to the plasma cutter model, torch type, cutting current, material and cutting application. Key consumables typically include the electrode, nozzle, swirl ring, shield and retaining cap. Using the correct consumable combination is essential for stable arc performance, consistent cut quality and reasonable consumable life. Avoid mixing incompatible components from different torch systems unless compatibility has been confirmed.

  • Q How can I extend the life of plasma torch consumables?

    A

    To extend plasma torch consumable life, use the correct amperage and cutting parameters, maintain clean and dry compressed air, keep the correct torch-to-work distance and minimize unnecessary piercing. Regularly inspect the electrode and nozzle for wear and replace them when their condition begins to affect arc stability or cut quality. Proper consumable installation and torch maintenance are also essential for maximizing service life.

  • Q Which torch does INWELT recommend for pressure vessels and pipelines?

    A

    TIG torches and plasma welding guns for precision, full-penetration welding. Featured products: TIG 26F torch and Plasma Welding Gun 350MPW.

  • Q How do I choose an air-cooled or water-cooled TIG torch?

    A

    Air-cooled TIG torches are commonly used for lower to moderate current applications and provide a simple, lightweight setup. Water-cooled TIG torches are generally preferred for higher current, longer welding cycles and applications where reduced torch heat is important. The choice should be based on welding current, duty cycle, working time and application requirements.

  • Q Does INWELT support global partnerships and distribution?

    A

    Yes. INWELT is built on long-term global partnerships, working with importers, distributors and manufacturers worldwide to deliver complete industrial welding solutions. Contact INWELT for partnership, distribution or OEM inquiries.

  • Q Does INWELT supply welding torch accessories?

    A

    Yes. Besides MIG, TIG and plasma torches, INWELT supplies welding torch accessories and consumables as part of a complete industrial welding ecosystem — one partner for torches and the parts that keep them running.

  • Q What causes poor shielding gas coverage in TIG welding?

    A

    Poor TIG shielding gas coverage can result from incorrect gas flow, leaks, excessive gas flow that creates turbulence, drafts, an incorrect torch angle or an unsuitable cup size. Inspect the gas hose, fittings, torch components and ceramic cup, and maintain stable shielding around the weld area.

  • Q How do I choose the right MIG welding torch?

    A

    Choose a MIG welding torch based on the required welding current, duty cycle, welding wire diameter, connection type and application. For light-duty welding, a compact air-cooled torch may be sufficient, while higher-current or continuous welding applications require a higher-rated heavy-duty torch. Compatibility with the welding machine, torch connector, liner, contact tip and gas nozzle should also be confirmed before selection.

  • Q How do I choose the correct MIG contact tip?

    A

    Select a MIG contact tip according to the welding wire diameter, wire material, welding current and application. The tip should provide consistent electrical contact while allowing the wire to feed smoothly. Using the correct tip size and material can help reduce wire feeding problems, burnback and premature tip wear. Always verify compatibility with the MIG torch and welding wire.

  • Q How often should I replace a MIG liner?

    A

    A MIG liner should be inspected regularly and replaced when it becomes worn, contaminated, kinked or causes inconsistent wire feeding. There is no universal replacement interval because liner life depends on wire type, welding current, torch length, operating conditions and maintenance.

  • Q How do I choose the right MIG contact tip?

    A

    Select a MIG contact tip based on the welding wire diameter, wire type, welding current and application. The contact tip should provide consistent electrical contact while allowing the welding wire to feed smoothly. Always follow the compatibility recommendations of the welding gun and welding wire manufacturer.

  • Q Why choose INWELT welding torches?

    A

    Four pillars: Engineering, Reliability, Performance, Partnership. Disciplined manufacturing standards, 100% inspection, pure copper cables and ≥20% annual R&D investment translate into torches that stay stable, reliable and consistent over years of use.


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Changzhou, Jiangsu, China

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