1.boiler tube/fin tube 2.material:stainless steel, carbon steel 3.no leakness 4.ISO9001

specification of fin tube
material	specification(mm)	OD of fin	heat exchanging area(M2)	height of fin	thickness of fin(mm)	distance between fin(mm)	longest(m)
carbon steel tube with extruded aluminium fin	Φ 18 X 2.0	Φ38	0.72	10	0.3	3	3
	Φ 21 X 2.0	Φ44	0.96	12	0.3	3	3
	Φ 21 X 2.0	Φ51	1.15	15	0.3	3	3
	Φ 25 X 2.5	Φ50	1.2	12.5	0.3	3	3
	Φ 25 X 2.5	Φ55	1.37	15	0.3	3	3
	Φ 32 X 2.5	Φ62	1.56	15	0.3	3	3
carbon steel tube  with crimped carbon steel fin	Φ 18 X 2.0	Φ38	0.57	10	0.3	4 to 5	3
	Φ 21 X 2.0	Φ51	0.68	15	0.3	5 to 8	3
	Φ 21 X 2.0	Φ45	0.76	12	0.3	5 to 8	3
	Φ 25 X 2.5	Φ50	0.96	15	0.3	5 to 8	3
	Φ 25 X 2.5	Φ55	1	15	0.3	5 to 8	3
	Φ 32 X 2.5	Φ62	1.1	15	0.3	8 to 10	3
	Φ 32 X 2.5	Φ72	1.21	20	0.3	8 to 10	3
stainless steel tube  with crimped stainless steel fin	Φ 18 X 2.0	Φ38	0.62	10	0.3	4	3
	Φ 21 X 2.0	Φ51	0.75	15	0.3	5	3
	Φ 21 X 2.0	Φ45	0.87	12	0.3	5	3
	Φ 25 X 2.5	Φ50	1	12.5	0.3	5	3
	Φ 25 X 2.5	Φ55	1.25	15	0.3	5	3
stainless steel tube with extruded aluminium fin	Φ 18 X 2.0	Φ38	0.72	10	0.3	3	3
	Φ 21 X 2.0	Φ51	0.96	12	0.3	3	3
	Φ 21 X 2.0	Φ45	1.15	15	0.3	3	3
	Φ 25 X 2.5	Φ50	1.2	12.5	0.3	3	3
	Φ 25 X 2.5	Φ55	1.37	15	0.3	3	3
	Φ 32 X 2.5	Φ62	1.56	15	0.3	3	3
copper tube  with crimped copper fin	Φ 16 X 1.0	Φ36	0.56	10	0.3	3.2 to 3.5	3
	Φ 16 X 1.0	Φ36	0.66	10	0.3	2.6 to 2.8	3

boiler tube /fin tube