FAQ

	The E7018 welding rods I've been buying are now marked E7018 H4R. What does the H4R mean? Are these rods different than the E7018 rods I've used before?
	Why is hydrogen a concern in welding?
	What is the maximum plate thickness which can be welded with Innershield NR-211MP (E71T-11) wire?
	What electrode can I use to join mild steel to stainless steel?
	What consumable should be used to weld cast iron?
	What consumable can be used to weld on SAE 4130 steel tubing?
	What consumable should be used for weathering steel?
	What are you recommendations for welding AR400 wear plate ?
	What consumables are better for welding over rusty, dirty steel?
	What flux-cored wires are better for welding on high sulfur steel?
	What precautions should I take when welding T-1 steels?
	Why are the Charpy impact values from my test welds lower than that printed on your Certificate of Conformance?
	I'm welding with an Innershield FCAW-SS wire and occasionally get porosity or “chicken tracks”. How can I eliminate this?
	Can I use flux-cored wires (FCAW-GS or FCAW-SS) on a constant current (CC) stick welding power source?
	Why is preheat sometimes required before welding?
	What is interpass temperature?
	Is MIG welding a low Hydrogen process?
	Does it really matter if we use 1.0mm or 1.2mm diameter, there is hardly any difference ?
	Is the specification EN440:G3Si1 the same as the the old SG3 specification?
	What length of 6mm leg length fillet will I get from an 18Kg spool of Supramig?
	Which wire is best for butt welds, Supramig or Supramig Ultra?
	Which wire is best for fillet welds, Supramig or Supramig Ultra?
	Does Carbon Dioxide shielding gas give a colder weld and less penetration?
	All mild steel MIG welding wire is the same, the only difference is the price !!
	Frequently Asked Questions in Aluminum Welding

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