Inner Grooved Tube

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Inner Grooved Tube

Product Details

Longda has a complete set of manufacturing and testing equipments ,which are the most
Advanced in the technical tube industry .Meanwhile ,we have established an effective
quality management system with strong execution.
We manufacture and control the products in accordance with ASTM (American Society
of Testing Materials) & ASME(American Society of Mechanical Engineers) standards.

1.Copper & Copper Alloys Tube
ASTM B75 ,ASTM B111,ASTM B359,ASME SB75,ASME SB111,ASME SB359
Chinese Standard : JB/T 10503, GB/T 19447 ,GB/T 17791,GB/T1527,GB/T 8890
DIN EN12451,DIN EN12449, EN12452, EN10204
2.Carbon Steel Tube: ASTM A179 ,ASME SA179 ,ASTM A498
3.Stainless Steel Tube :ASTM A213 ,ASTM A268 ,ASTM A803
4.Titanium & Titanium Alloy Tube :ASTM B338, ASTMB861,ASME SB338 ,ASME SB861, GB/T 3624, GB/T 3625, EN17861
Fin Tube Materials

Fin Tube Material	China GB	ISO	EN	UNS	JIS
Copper	TP2	Cu-DHP	CW024A	C12200	C1220
Copper	TP1	Cu-DLP	CW023A	C12000	C1201
Admiralty Brass	HSn70-1	CuZn28Sn1As	CW706R	C44300	C4430
Aluminum Brass	HAl77-2	CuZn20Al2As	CW702R	C68700	C6870
Copper Nickel 90/10	BFe10-1-1	CuNi10Fe1Mn	CW352H	C70600	C7060
Copper Nickel 90/30	BFe30-1-1	CuNi30Mn1Fe	CW354H	C71500	C7150
Carbon Steel Tube	10	-	E215	A179	STB340
Stainless Steel	06Cr19Ni10	-	X5CrNi18-10	304	SUS304
Stainless Steel	06Cr17Ni12Mo2	-	X5CrNiMo17-12-2	316	SUS316
Titanium Alloy	TA1	-	TI1	GR1	-
Titanium Alloy	TA2	-	TI2	GR2	-

Range of Available Dimensions

Product Category	Material				Plain End		Finned Dimensions
Inner Grooved Tube	C12200, C12000	C44300, C68700	C70600, C71500	A179	OD (mm)	End WT (mm)	Norminal Wall under Fin (mm)	Ridge Number (n)	Ridge Height (mm)
	☆	☆	☆		12.0	0.70	0.55	75	0.25
	☆	☆	☆		12.7	0.70	0.55	75	0.25
	☆	☆	☆		12.7	1.0	0.71	50	0.50
	☆	☆	☆		16	0.75	0.55	75	0.30
	☆	☆	☆		16	0.80	0.60	75	0.30
	☆	☆	☆		16	0.90	0.70	75	0.30
	☆	☆	☆		16	1.0	0.75	50	0.50
	☆	☆	☆		16	1.0	0.80	75	0.30
	☆	☆	☆		12.7	1.0	0.81	60	0.20
	☆	☆	☆		16	0.75	0.55	75	0.30

Product Category	Finned Dimensions (Continue)
Inner Grooved Tube	Helix Angle ( °)	Nominal Inside Surface Area( m2/m)	Actual Inside Surface Area( m2/m)
	18	0.034	0.060
	18	0.036	0.061
	2	0.035	0.063
	23	0.047	0.080
	23	0.046	0.078
	23	0.046	0.074
	2	0.046	0.078
	23	0.045	0.080
	18	0.035	0.051
	23	0.047	0.080

Application & Advantage

Inner Grooved Tube /Direct Expansion Heat Exchanger Tube
It is a type of inner gooved copper tube in straight length ,is designed for direct expansion shell & tube evaporators or condensers .Inner Ridges of the tubes are optimized by testing and statistical research work to acquire the best heat transfer performance ,while still keeping reasonable inernal pressure drop.

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