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DELLOK Welded Spiral Evaporator EN 10204 Carbon Steel Pipe Elbow

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DELLOK Welded Spiral Evaporator EN 10204 Carbon Steel Pipe Elbow
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Features
Specifications
Tube OD:: 19mm Min.
Fins Type: Solid/Plain, Serrated, Radial
Tube Length:: 18 Meters Max.
Fin Height:: 32mm Max.
Fin Thickness:: 0.8mm Min
Fin Pitch:: Min. 4 Mm For Solid Fins & 3.3mm For Serrated Fins.
High Light:

EN 10204 Carbon Steel Pipe Elbow

,

0.8mm 180 Degree Steel Pipe Elbow

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32mm Weld Elbows Steel

Basic Infomation
Place of Origin: China
Brand Name: DELLOK
Certification: CE. ISO,EN10204. 3.1 Cert.
Model Number: HFW
Payment & Shipping Terms
Packaging Details: (1) Steel frame case sealed by plywoods with each end capped; (2)Solid fumigated wooden box with each end capped.
Delivery Time: within 15days
Payment Terms: L/C, T/T Contact us for details
Supply Ability: 60000 meters month
Product Description

Welded Spiral Evaporator EN 10204 Carbon Steel Pipe Elbow

 

U Bent Welded Spiral Evaporator Tube , SA210 Gr. C SMLS Carbon Steel Tube

 

Detail:

High 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, we call it Hairpin 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….

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:

  1. We have more than 10,000 square meters workshop, including 4 ERW high Frequency welding fining lines, daily production capacity around 40 Tons;

  2. Our quality assurance plan for High Frequency Welding Spiral Steel Tubes. (2.1) Raw material control for both plain tubes and fins. (2.2) In process control with reports,as WPS, PQR&WPQ; weld deposition efficiency test before fabrication, Non-destructive test and tensile test etc. (2.3) Final inspection control with reports (Visual and dimensional check etc…).

  3. The High Frequency Resistance Welded Fin Tube is integrally extended for the max surface area to achieve efficiency. The heat transfer ratio of high frequency welding fin tube is about 8~9 times higher than other plain tubes.

  4. This Welded Helical Fin Tubes is a singular integral unit, eliminating heat contact resistance and losses. Generally tube side temperature up to 800 degree for stainess steel fins; Low carbon steels, withstanding up to 475 degree is the most common choice.

Our Service:
1. Inquiry-Professional quotation, or send inquiry item more details, we start contact more details
2. Confirm the price, lead time, payment term etc
3. Our sales send the Proforma Invoice with our seal, or you order online to us
4. Customer make the payment for deposit and send us Bank receipt
5. Initial Production Stage-Inform the clients that we have got the payment, and will make the samples according to your request, send you photos or samples to get your approval. After approval, we inform that we will arrange the production & inform the estimated time
6. Middle Production-send photos to show the production line which you can see you products. Confirm the estimated delivery time again.
7. End Production-Mass production products photos and samples will send to you for approval. You can also arrange the third party inspection
8. Clients make payment for balance and ship goods, inform the tracking number and check the status for clients
9. Order can be say "finish" when you receive the goods and satisfy with them
10. Feedback to our about Quality, Service, Market Feedback & Suggestion. And we can do better

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Contact Person : Pax Yang
Tel : +862569521609
Fax : 86-25-6952-5709
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