NSF Product and Service Listings

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Drinking Water System Components - Health Effects

NOTE: Unless otherwise indicated for Materials, Certification is only for the Water Contact Material shown in the Listing. Click here for a list of Abbreviations used in these Listings. Click here for the definitions of Water Contact Temperatures denoted in these Listings.

Nungwon Metal Ind. Co., Ltd. (NWM) 
3 F, Nungdo Building 
29, Muhak-ro 25-gil 
Dongdaemoon-ku, Seoul 
Republic of Korea 
82 2 2254 2584

Facility : Kyungki-Do, Korea, Republic of

Pipes and Related Products

    Water Water
    Contact Contact
Trade Designation Size Temp Material

Copper Tube[1] [G] >= 3/16" O.D. C. HOT CU
Level Wound Coil[1] [G] >= 3/16" O.D. C. HOT CU
Pancake Coil[1] [G] >= 3/16" O.D. C. HOT CU
Straight Tube Type K,L,M[1] [G] >= 3/16" O.D. C. HOT CU

[1] Copper tube (Alloy C12200) is Certified by NSF to NSF/ANSI 61 for use in drinking water
    supplies of pH 6.5 and above.  Drinking water supplies that are less than pH 6.5 may
    require corrosion control to limit leaching of copper into the drinking water.
[G] Product is Certified to NSF/ANSI 372 and conforms with the lead content requirements for
    “lead free” plumbing as defined by California, Vermont, Maryland, and Louisiana state
    laws and the U.S. Safe Drinking Water Act.


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