Active Member
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[China]
Address: Chengchang Industrial Park,Huangtu Town,Jiangyin City,Jiangsu Province,China
Contact name:Antonio Zhou
Jiangsu Liangyi Co.,Limited |
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We are professional ASTM A213 T91 F11 T5 T9 T12 T22 Alloy Steel HF spiral welding Welded Fin Tubes pipes finned tubes pipes tubings fintubes For Economizers from china
igh Frequency Resistance Welded Helical Steel Fin Tubes is widely used in the recovery of waste heat from boiler flue gas.
| General HF welding production capacity | General specifications of HF welding fin tube |
| Welding Facility: 4 finning machines; Daily production capacity up to 40 tons; HFW Fin type: solid plain and serrated. | Tube OD: 19mm min. Tube Length: 18 meters max. Fin Height: 32 mm max. Fin Thickness: 0.8mm min Fin Pitch: min. 4 mm for solid fins & 3.3mm for serrated fins. |
Manufacturing Process: The fin strip is welded continuously and spirally wound onto a
polished bare tube. And the tube and fins are bonded together by
using high frequency resistance welding technique.
We produce both solid plain and serrated helical welded steel
finned tube. And also, all spiral welding tubes could be bent in
the middle or at the end of fin tubes,
Acceptance Criteria:
INTERNATIONAL STANDARD FOR DIMENSIONS, TOLERANCES, AND TESTS OF
HIGH FREQUENCY RESISTANCE WELDED FINS or the delivery conditions
(TDC) of clients.
Visual check:
Un-welded parts of fin, fin damage after fining, copper pollution,
tears, wrap etc…
Dimensional check:
Fin height, fin spacing, fin inclination, fin corrugation, length
of finned & un-finned portion etc…
Bending check:
Ovality, thickness and area reduction.
Surface Coating:
outside-Red oxide zinc phosphate primer and inside volatile
corrosion inhibitor (VCI) in water soluble tablet form.
Tube End Finish:
Bevel @ (30°~35°)
Bevel Root Size
0.5mm~1.5mm
Delivery condition
Tube ends are square cut, free burrs, internally dried and air
blown clean, externally coated with varnish at both ends of helical
welded tubes.
Documentation:
It shall include QAP, WPS, PQR& WPQ, raw materials mill
certificates, inspection and test samples results and warranty
certificate of manufacturer.
Applications:
The High Frequency Resistance Welded Helical Fin Tubes are widely
applied in fired heaters, heat exchanger, boilers, economizers,
pre-heaters, coolers, heat pipes, heaters etc….
Applications:
The High Frequency Resistance Welded Helical Fin Tubes are widely
applied in fired heaters, heat exchanger, boilers, economizers,
pre-heaters, coolers, heat pipes, heaters etc….
Specifications:
A wide range of fin and tube materials could be combinations are
available.
| Items | General Materials | Popular ASTM Materials |
| Core Tube Material | Carbon Steel , Alloy Steel, Heat Resistant Steel, Stainless Steel etc. | 10#,20#,15CrMo,Cr5Mo,Cr9Mo,1Cr18Ni9Ti,0Cr18Ni9,
00Cr17Ni14Mo2,SA106B,SA106C, SA192, SA179, SA178,SA214, SA210-A1, SA210-C,TP304/304L/304H, TP409/410,TP316/316L,TP321/321L,TP347H,T11,T22,T91,etc. |
| Fins Material | Carbon Steel , Alloy Steel, Heat Resistant Steel, Stainless Steel etc. | Q235-BF,08F,08AL, 1Cr18Ni9Ti, 0Cr13, 1Cr13, 0Cr18Ni9, 09CrCuSb, CS,A1008-B,SPHC, SPCC, TP304/304L,TP316/316L,TP321/321L,etc. |
Dimensions Data Sheet We Can Supply.
| Solid Helical Steel Fin Tubes Fabrication Range | Solid fins(mm) | Serrated fins | ||
| Min | Max | Min | Max | |
| Tube OD(mm) | 19 | 219 | 19 | 219 |
| Fin Height(mm) | 8 | 26 | 8 | 32 |
| Fin Thickness(mm) | 0.8 | 2.8 | 1 | 1.6 |
| Fins Density(mm) | 4(250FPM) | 20 | 3.3(303FPM) | 20 |
| Tube Length(mm) | N/A | 18000 | N/A | 18000 |
| Additional supply range : (1) Tube swaging process for joint of 2 tubes. (2) Spacer rings (material: steel) are available. (3) One side is solid plain fins and the other is serrated fins, 2 fin types on same tube. | ||||
Competitive Advantage:
