Type K Copper Tubing Coils are manufactured to spec ASTM B88 is the Standard Specification for Seamless Copper Tube, ANSI/NSF Standard 61 Drinking Water System Components.
Type K copper tubing (ASTM B88, Alloy C12200) has the thickest wall among standard types, making it ideal for domestic water, fire protection, solar, compressed air, LPG, and HVAC systems. Known for superior pressure capacity and durability, Type K is preferred when frost lines are deep or system pressures fluctuate.
At CopperTubingSales.com, we offer Type K in coils (e.g., 100ft, 60 ft lengths) and custom cut lengths in nominal sizes (1/2″, 3/4″, 1″, etc.). Our tubing is ordered by nominal ID, so 1/2″ Type K yields 0.625″ OD with a 0.040″ wall. We provide physical wall‑thickness charts and ASTM B‑88/B280 spec PDF links directly on each product page.
All tubing ships from the U.S., typically in 1–2 business days, to both the U.S. and Canada. We support returns, full ASTM/B88 certification, and volume pricing. Whether you’re plumbing a residential build or serving HVAC trades, you’ll find reliable Type K copper solutions here.
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