Copper Pipe
Copper tubing is most commonly used for refrigerant lines in heating systems and HVAC systems. There are two basic types of copper tubing: soft copper tubing and hard copper tubing. Copper tubing is joined using flare connections, compression connections, compression connections or soldering. Copper has a high level of corrosion resistance.
Professional Copper Tube Supplier--GNEE
Some of the most common ways to use a copper pipe nowadays is for construction industry for water supply lines and refrigerant line in heating, ventilation, and air-conditioning (HVAC) systems. Whilst this can mean AC, many don't realize that this copper tube system is what keeps our refrigerators and our freezers alive.
While the majority of the copper tube applications lie in the residential sector, where they are used to convey potable water in homes and offices, refrigerator industries, firefighting systems, and medical and residential gas suppliers are also catching up.
Industry-leading copper production technology
Soft Copper
Soft (or ductile) copper tubing can be easily bent to bypass obstacles in the path of a pipe. Although the work-hardening of the drawing process used to size the tubing hardens or stiffens the copper, it is carefully annealed to make it soft again; therefore, it is more expensive to produce than unannealed rigid copper tubing. It can be joined by any of the three methods used for rigid copper, and it is the only type of copper tube suitable for flared connections. Soft copper is the most popular choice for split air conditioner and heat pump refrigerant lines.
Hard Copper
Hard copper is a popular choice for plumbing. Rigid or "hard" copper tubing is often referred to as "pipe". Copper "pipe" refers to the nominal size or inside diameter of the pipe. It is joined using solder/solder, rolled groove, compression or crimp/press connections. Hard copper, hardened by the work-hardening of the drawing process, cannot be bent and elbow fittings must be used to get around corners or obstacles. If heated and cooled in a process called annealing, rigid copper will soften and can be bent/formed without breaking.
Top quality copper products
|
Nominal Bore (NB) |
Outer Diameter (Inch OD) |
|
1/8" |
1/4" |
|
1/4" |
3/8" |
|
3/8" |
1/2" |
|
1/2" |
5/8" |
|
5/8" |
3/4" |
|
3/4" |
7/8" |
|
7/8" |
1" |
|
1" |
1 1/8" |
|
1 1/4" |
1 3/8" |
|
1 1/2" |
1 5/8" |
|
2" |
2 1/8" |
|
2 1/2" |
2 5/8" |
|
3" |
3 1/8" |
|
3 1/2" |
3 5/8" |
|
4" |
4 1/8" |
| Copper Tubing Sizes (CTS) for Plumbing[2] | ||||
|---|---|---|---|---|
| Nominal size |
Outside diameter (OD) [in (mm)] |
Inside diameter (ID) [in (mm)] |
||
| Type K | Type L | Type M | ||
| 1⁄4 | 3⁄8 (9.5) | 0.305 (7.747) | 0.315 (8.001) | |
| 3⁄8 | 1⁄2 (12.7) | 0.402 (10.211) | 0.430 (10.922) | 0.450 (11.430) |
| 1⁄2 | 5⁄8 (15.875) | 0.528 (13.411) | 0.545 (13.843) | 0.569 (14.453) |
| 5⁄8 | 3⁄4 (19.05) | 0.652 (16.561) | 0.668 (16.967) | 0.690 (17.526) |
| 3⁄4 | 7⁄8 (22.225) | 0.745 (18.923) | 0.785 (19.939) | 0.811 (20.599) |
| 1 | 1+1⁄8 (28.575) | 0.995 (25.273) | 1.025 (26.035) | 1.055 (26.797) |
| 11⁄4 | 1+3⁄8 (34.925) | 1.245 (31.623) | 1.265 (32.131) | 1.291 (32.791) |
| 11⁄2 | 1+5⁄8 (41.275) | 1.481 (37.617) | 1.505 (38.227) | 1.527 (38.786) |
| 2 | 2+1⁄8 (53.975) | 1.959 (49.759) | 1.985 (50.419) | 2.009 (51.029) |
| 21⁄2 | 2+5⁄8 (66.675) | 2.435 (61.849) | 2.465 (62.611) | 2.495 (63.373) |
| 3 | 3+1⁄8 (79.375) | 2.907 (73.838) | 2.945 (74.803) | 2.981 (75.717) |
Type K has the thickest wall section of the three types of pressure rated tubing and is commonly used for deep underground burial, such as under sidewalks and streets, with a suitable corrosion protection coating or continuous polyethylene sleeve as required by the plumbing code. In the United States, it usually has green-colored printing. This pipe designation is used in the Refrigeration Industry.
Type L has a thinner pipe wall section and is used in residential and commercial water supply and pressure applications. In the United States, it usually has blue-colored printing.
Type M has an even thinner pipe wall section and is used in residential and commercial low-pressure heating applications. In the United States, it usually has red-colored printing.
Copper Products Factory
Reliable team
Group has 5 subsidiary corporations, located in Anyang, Tianjin, Hongkong and Singapore countries and districts. Headquarters is in hometown of oracle in Henan province, location of world cultural heritage" Yin Ruin", Anyang city, one of eight ancient capitals of China.
Our materials are designed to be strong, durable, and resistant to wear and tear, ensuring that they can stand up to even the toughest conditions. At our manufacturing facilities, we use state-of-the-art equipment and technology to ensure that every product meets our strict quality standards. We are committed to sustainability and environmentally-friendly practices, and we strive to reduce waste and conserve resources in all aspects of our operations.
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