C12200 Copper Tube

Henan Gnee New Material Co., Ltd. is one of the most professional manufacturers and suppliers of c12200 copper tube in China, specialized in providing high quality copper products with competitive price. Welcome to buy discount c12200 copper tube for sale here from our factory. Customized orders are welcome.

C12200 is a deoxidized high-phosphorus (DHP) copper tube. The phosphorus content – held between 0.015% and 0.040% – removes oxygen from the copper during melting. That small addition makes a big difference: regular copper without deoxidation (like C11000) can become brittle and crack when you weld or braze it. C12200 doesn't have that problem. It's been the standard choice for water supply lines, refrigerant circuits, fuel oil systems, and compressed air for decades. Not because it's the cheapest, but because it fails less often.

Soft (Annealed)

Best for: Tight-radius bends, flaring for flare fittings, refrigeration lines that run through tight chases, and anything that needs to coil.

Half-Hard

Best for: General plumbing inside walls, water supply risers, and light structural runs where you need some rigidity but still might need to make a gentle bend.

Hard (Drawn)

Best for: Straight pipe runs, high-pressure hydraulic lines, and applications where the tube serves as a structural support – not just a conduit.

Outside Diameter (OD) & Length

K/L/M Wall Thickness Series (ASTM B88)

In copper tube for plumbing and HVAC, K, L, M indicate wall thickness. K is thickest, M is thinnest.

Actual wall thickness example – 1/2″ (12.7mm) OD:

For air conditioning refrigerant lines, Type L is the industry standard. Type K is overkill for most AC work unless code requires it or lines are underground. Type M is not recommended for refrigerant – too thin.

Tolerances (ASTM B75)

Hardness Reference

ASTM B75 – Seamless copper tube for general applications (most common)

ASTM B88 – Water service tube (types K, L, M)

EN 1057 – European standard for plumbing, heating, and gas

BS 2871 – British standard for copper tubes (Part 1 for water, Part 3 for gas)

JIS H3300 – Japanese standard (designated as C1220)

AS 1432 – Australian standard for copper tubes (available on request)

C12200 is the practical choice for 90% of plumbing and HVAC jobs. You get weldability and corrosion resistance without paying the premium for oxygen-free copper. We've seen contractors switch from C11000 to C12200 after just one leaky joint during pressure testing. It's not worth saving the small difference.

Air conditioning systems – residential split systems, commercial rooftop units, chilled water loops, and VRF refrigerant lines

Refrigeration – walk-in coolers, display cases, industrial freezers, and suction/liquid lines

Plumbing and potable water – hot and cold water distribution in residential and commercial buildings

Solar thermal systems – collector loops with glycol or water-based heat transfer fluids

Compressed air – distribution lines where rust from black pipe is unacceptable

Fuel oil and diesel – supply and return lines for generators and boilers

Hydraulic and lubrication – low to medium pressure return and supply lines

Oxygen and inert gas – clean tube available for medical and industrial gas systems

Food processing and dairy – sanitary surface finish available on request

1. What is the chemical composition of C12200 copper tube?
C12200 contains a minimum of 99.9% copper and 0.015% to 0.040% phosphorus. The phosphorus removes oxygen during melting to prevent hydrogen embrittlement when brazing. Lead is kept below 0.005%, making it safe for drinking water.

2. Can you provide a Mill Test Certificate with actual batch values?
Yes. Every shipment comes with an MTC showing chemical composition, tensile strength, yield strength, elongation, and hardness from your specific heat number. We archive records for five years.

3. What is the difference between C12200 and C1220?
Same material. C12200 is the UNS designation (North America). C1220 is the JIS designation (Japan). Both are DHP copper with 0.015–0.040% phosphorus. We can certify to either standard.

4. Is C12200 approved for drinking water systems?
Yes. It meets NSF/ANSI 61 and WRAS requirements with lead below 0.005%. We can supply certification with your order upon request.

5. What is the maximum working pressure for C12200?
Depends on OD, wall thickness, and temper. For 1/2″ OD x 0.032″ wall (annealed), burst pressure exceeds 2000 psi. Working pressure is typically 1/4 to 1/3 of burst. Send us your size and we will calculate it.

6. Can you cut to custom lengths?
Yes. Straight lengths from 0.5m to 12m. Coils from 15m to 100m. Standard cuts are free on orders over 10 tons. Small cutting fee applies for smaller quantities.

7. What tempers do you supply – soft, half-hard, or hard?
All three. Soft (annealed) bends easily and flares well. Hard (drawn) stays straight and resists dents. Half-hard is in between. Half-hard typically adds 7–10 days lead time.

8. What is your lead time for a 20ft container?
15–25 days for standard sizes after deposit. Stock items (1/2″, 3/4″, 1″, etc.) can ship in 7 days. Non-standard sizes or thick walls take 30–40 days.

9. Do you accept third-party inspection (SGS, BV, TÜV)?
Yes. You arrange the inspection company. We provide samples, test documents, and floor access. Notify us 5 days ahead. No release without your approval.

10. How do you prevent corrosion during ocean shipping?
Plastic caps on both ends for straight lengths. VCI paper and VCI bag wrap for moisture protection. Steel bands secure the bundle. Coils get core inserts and full wrap. All wooden crates are ISPM-15 certified.

Straight lengths get plastic caps pressed onto both ends to keep out dirt and moisture. The entire bundle is wrapped in VCI paper, then stretch film, then a heavy-duty VCI bag for double moisture protection. Steel bands – three to four per bundle depending on length – hold everything tight so tubes do not rub against each other. Coils get cardboard or plastic core inserts to prevent inner diameter collapse, then VCI film and a polyethylene bag, with four steel bands crisscrossed. All wooden crates and pallets are ISPM-15 certified for export. Waterproof labels show heat number, OD and wall, temper, standard, and length on every bundle and crate.

Our C12200 copper tube is made in our own factory, not sourced from traders. We run two horizontal continuous casting furnaces that each melt about 50 tons of copper per day, feeding into a 1,630-ton extrusion press that forms hollow shells. From there, three-roll planetary rolling mills reduce wall thickness by up to 90% in a single pass, followed by six chain-type drawing benches that produce final sizes from 6mm to 219mm OD. Bright annealing furnaces with nitrogen atmosphere give soft temper tubes a clean, shiny surface without oxidation. On the finishing end, we have eddy current testers, an ultrasonic wall monitor, and a laser micrometer. Our on-site lab includes a spectrometer, tensile testing machine, and hardness tester. We keep spare parts for all major machines so production does not stop for weeks. We offer video walkthroughs for serious buyers who want to see the line before ordering.

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