What does ERW stand for?

What does ERW mean?

ERW	ERWeitert International » German
ERW	Electric Resistance Welded Business » Products
ERW	Electric Resistance Weld Academic & Science » Electronics
ERW	Electrolyzed Reduced Water Academic & Science » Chemistry
ERW	Execute Read Write Computing » Assembly
ERW	Electric Resistance Weld
ERW	Equal Rights Washington Governmental » Politics
ERW	Engine Rebuilders Warehouse Business » Firms
ERW	Explosive Remnants of War Governmental » Environmental