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Thanks for reaching out about the HR14series contact tips—our company supply these for Tweco torches with the standard 1/4''UNF*38 thread, and they're made from either Cu-E or CuCrZr alloy, which gives good conductivity and heat resistance for high-duty-cycle MIG work. Most buyers go with CuCrZr for heavy use since it holds up longer under heat, but Cu-E is fine for lighter jobs and costs a bit less.
2, we offer eight diameters from 0.6mm up to 2.0mm, though the 1.2mm is the most common pick for general steel welding—basically, you can order any mix of sizes packed as 50 pieces per bag or whatever works for you. Lead time is usually 15-20 working days for standard orders, but we keep stock on the popular sizes like 0.8mm and 1.0mm so those can ship faster if you need them urgently.
One thing buyers often ask about is thread fit—these tips have a 1/4''UNF thread (38mm length), and they're machined to snug tight so they don't loosen during welding, which saves you from arc instability. Not suited for euro-style torches or M8 thread torches, just so you're clear—this is a Tweco-compatible system.
We're ISO9001 and CE certified, and each batch gets a COA on request—so if you need TUV paperwork or RoHS compliance, just mention it when you place the order. Pricing varies by quantty and materail; for a typical bulk order of 5,000 pieces or so, our company can offer a better per-unit rate than smaller MOQs, though we'll do smaller runs if you're testing first.
Teh CuCrZr tips handle heat better than standard Cu-E, especially on pulsed or high-amperage MIG profiles, but they're slightly harder to machine, so we usually hold a 0.02mm tolerance on bore diameter for consistent wire feed. It's a detail most catalogs skip, but it matters for aluminun or stainless welding where drag can cause burnback.
Anyway, if you're comparing suppliers, we've been making these in Changzhou for years and ship via sea or air depending on your timeline—just confirm the diameters and quantity, and we'll send a quotation with lead time.
Our standard MOQ is 500 pieces per size and material, but we can be flexible for first-time orders or samples. Just reach out to confirm.
Yes, we include certificates like ISO9001, CE, and RoHS with every order. Just let us know if you need a specific one like TUV.
Typically 15–20 working days for that volume, depending on the material mix. We'll confirm once we know the exact sizes and quantities.
Yes, the 0.6mm size is available in both Cu - E and CuCrZr. Just specify the material when you order.
Absolutely, we can do custom packaging and labeling per your request. Just share the details, and we'll adjust the price accordingly.
