COPTECH doo - Hard copper tubes R290

hard copper tubes

:: Copper tubes are widely applied:

· Water supply
· Drainage and sanitation
· Gas reticulation
· Refrigeration
· Heating
· Air conditioning
· Electrical component
· Automotive Instrumentation
· Medical gases
· General engineering

We offer sanitary and industrial copper tubes mostly of the following standards:

EN 1057, EN 12735-1, EN 12735-2, EN 12449, ASTM B280, ASTM B68/251, ASTM B88, NF EN 1056, GOST 617, GOST 11383, JUS C.D5-500, JUS C.D5-502 ...

For information for sizes and prices please email us at info@copper-tubes.net
or telephone us on +381(0)11 32 82 510

Copper tubes - dimensions, allowable pressures and weights

DxS (mm)	6x1	8x1	10x1	12x1	15x1	16x1	18x1	22x1	28x1,5	35x1,5	42x1,5	54x2	76x2,5
Pressure (bar)*	145	109	87	71	57	52	48	38	46	36	30	31	25
Weight (kg/m)	0,140	0,197	0,253	0,309	0,393	0,421	0,477	0,590	1,116	1,411	1,705	2,919	5,158

* Values indicated for pressure in the table above are computed for soft tubes with safety factor N=5. Values indicated for allowable pressure relate only to tubes, not to their joints.

Weight and maximum allowable working pressure of fluids are computed using the following equations for each copper tube size:

For weight:	For pressure:
Q = (D - S) x S x π x γ, gr/m	P = 200 Rm S / DN, bara
where:	where:
D - outer diameter, mm	200 - conversion constant
S - wall thickness, mm	Rm - tensile strength, N/mm²
γ - specific weight of copper, 8.94 kg/dm³	S - wall thickness, mm
π - 3,14	D - outer diameter, mm
	N - safety factor (5)

:: Hard copper tubes R290

Mechanical properties according to EN 1057 for hard copper tubes

Temper	Temper designation	Tensile strength (N/mm²)	Elongation (%) A5	Hardness HV5 (approximately)
hard	R290	min. 290	3	min.100

Delivery conditions and packaging for half-hard copper tubes

Temper designation	Outer Diameter(mm)	Wall thickness (mm)	Delivery condition	Packaging
R290	5 - 76	0,5 – 2,5	up to 6 m, straight length	In bundles wrapped in plastic foil