LL Type Radiator Spacer Box SA210 Carbon Steel Seamless Tube
A179 SMLS Carbon Steel , OD19X1.25WT, LL Type Fins Radiator Tube with Spacer Box
Manufacturing process: The fin strip (normally aluminum and copper) is folded into an L SHAPE and wound onto the base tube surface under tension. The feet of the fins are joined together and cover the finned surface.
Surface Protection
Both bare ends shall be Zinc or Aluminum metalized applied by an electro spray arc system coating.
Acceptance Criteria
API Standard 661(Air-Cooled Heat Exchangers for General Refinery Service) or the delivery conditions (TDC).
Accessories
Tube Support Box, Clamp or Spacer Box (Material: Aluminum, Zinc and Stainless Steel).
Delivery Condition
Tube ends are square cut, free burrs, internally dried and air blown clean, externally coated with varnish at both ends of LL Type Tension Wound Finned Tube.
Packing:
The desiccants are put into each package for continental transportation as well.
Applications:
The common application fields are:
Heat exchangers units for power plant(electric, nuclear, thermal and geothermal power plants);
High corrosive systems (condensers, evaporators, sea water desalinations, fertilizing, urea systems, ammonia, gas, corrosive acids);
The petroleum, chemical and petrochemical industries;
The food processing and refrigeration industries;
Natural gas treatment;
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Product Details |
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Tube details: |
Tube OD: 12.7 mm~25.4mm |
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Tube Length: 18 meters max. |
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Fin Height: 1.2 mm ~2.77mm |
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Fin Thickness: appr. 0.3mm |
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Fin Pitch: 30 FPI /28 FPI/ 26 FPI/ 36 FPI /43 FPI |
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Production Capacity: |
Daily capacity up to 3000 meters; |
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LL Type Finned Tube (LL-Wound Fin Tubes) process: |
Fins made by wrapping base tube with fin strip, as in the case of type ‘L’ Tension Wound Type. |
Specifications:
LL Type Tension Wound Tube is combined with two different materials.
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Items |
General Materials |
Popular ASTM Materials |
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Core Tube Material |
Carbon steel, low-alloy steel, stainless steel, brass, copper, cooper-nickel alloys, aluminum bronze, nickel alloys. |
1. Carbon Steel: A179, A192,SA210 Gr A1/C,A106 Gr B 2. Stainless Steel: TP304/304L,TP316/TP316L 3. Copper:UNS12200/UNS14200/UNS70600, CuNi70/30,CuNi 90/10 4. Titanium: B338 Gr 2 |
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Fins Material |
Aluminum & Copper. |
1. Aluminum(Alu.1100,Alu.1060) 2. Copper. |
Competitive Advantage:
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
We have more than 10,000 square meters workshop, including 7 finning machines, daily capacity up to 5,000 Meters.
The finning machines are designed and assembled by ourselves and we can offer you finning machines and all accessories etc...
This method of manufacturing overlapped LL type enables us to place the finning on a very thin-walled tube with is particularly desirable when using high value alloys (titanium, stainless, copper, nickel).
The LL TYPE fin tubes can withstand a temperature of up to 170°C and provide a better corrosion protection by overlapping the feet of the L shapes. Maximum operating temperature: 170°C
