B280 Copper Pipe for HVAC & Refrigeration Systems

When buyers source copper tubing for air conditioning and refrigeration projects, long-term reliability usually matters more than simply meeting the minimum standard. B280 Copper Pipe is manufactured specifically for pressure-bearing refrigeration lines, offering excellent cleanliness, stable dimensions and high thermal conductivity. As a China B280 Copper Pipe Supplier, we provide straight lengths and pancake coils with customized sizes, suitable for OEM production, HVAC installation and large engineering projects.

Product Specifications

Item	Details
Standard	ASTM B280
Material	High Purity Copper (C12200)
Outside Diameter	1/8"–4-1/8" (3.18–104.8 mm)
Wall Thickness	0.30–2.50 mm
Length	Straight Length, Coil or Customized
Temper	Soft (O60), Half Hard, Hard
Surface	Bright, Clean, Oil-Free
Supply Form	Straight Tube / Pancake Coil
Processing	Cutting, Bending, End Expansion

Element	Content Limit
Cu + Ag	Min. 99.90%
Phosphorus (P)	0.015% ~ 0.040%
Bismuth (Bi)	Max. 0.001%
Lead (Pb)	Max. 0.005%
Iron (Fe)	Max. 0.05%
Zinc (Zn)	Max. 0.03%

Item	Soft Annealed Coil (O Temper)	Hard Straight Tube (H Temper)
Tensile Strength	≥205 MPa	≥310 MPa
Yield Strength	≤69 MPa	≥275 MPa
Elongation	≥40%	≥10%
Hardness (HV)	40 ~ 65 HV	90 ~ 120 HV
Surface Finish	Bright Annealed (BA), oil-free & nitrogen sealed ends	Clean drawn smooth finish
Key Feature	Super ductile, easy flaring & bending	High rigidity, straight for fixed pipeline

Why Many HVAC Buyers Choose B280 Copper Pipe?

Made for Refrigeration Service

Unlike general-purpose copper tubes, ASTM B280 tubing is produced specifically for refrigeration and air conditioning systems. The inside surface is cleaned during manufacturing to reduce residual contaminants that could affect compressor performance.

High Heat Transfer Efficiency

Copper has thermal conductivity of approximately 390 W/m·K, allowing refrigerants to exchange heat quickly while improving overall system efficiency.

Easy Fabrication On Site

The tube can be flared, bent and brazed without complicated machining, helping installers shorten installation time and reduce fitting costs.

Good Pressure Reliability

Uniform wall thickness and stable dimensional tolerance make B280 Copper Pipe suitable for medium and high-pressure refrigerant systems used in commercial HVAC equipment.