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DELLOK EN 10204 TP304 TP316L Stainless Steel Length 18m Low Fin Tubes

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DELLOK EN 10204 TP304 TP316L Stainless Steel Length 18m Low Fin Tubes
Features Gallery Product Description Request A Quote
Fins Type: Integral, N Type
OD: 12.7 Mm~25.4mm
Length: 18 Meters Max.
Height: 1.2 Mm ~2.77mm
Thickness: Appr. 0.3mm
Pitch: 30 FPI /28 FPI/ 26 FPI/ 36 FPI /43 FPI
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TP304 Low Fin Tubes


EN 10204 Stainless Steel Tubes


TP316L Low Fin Tubes

Basic Infomation
Place of Origin: China
Brand Name: DELLOK
Certification: CE. ISO,EN10204. 3.1 Cert.
Model Number: Low Finned Tubes
Payment & Shipping Terms
Packaging Details: (1) All integral low fin tubes are packed in hexagonal bundles. (2) Steel frame case sealed by plywoods; 3: Solid fumigated seaworthy wooden box.
Delivery Time: Ex-work with 5 weeks after order.
Payment Terms: L/C, T/T Contact us for details
Supply Ability: 60000 meters month
Product Description

TP304 TP316L Stainless Steel Length 18m Low Fin Tube


TP304 / TP304L , TP316 / TP316L , Austenitic Stainless Steel Corrugated Low Fin Tube​

Product Details
Fin details: Thickness: appr. 0.3mm
Height: 1.2 mm ~2.77mm
Length: No Limit
Pitch: 30 FPI /28 FPI/ 26 FPI/ 36 FPI /43 FPI
OD: 12.7 mm~25.4mm



The fins are rolled out of outer wall of the plain tubes by a pass roller. Tubes and fins are in same piece tube. We call it “N” fin type. All integral low fin tube quality is assured by hydrostatic or pneumatic tests, eddy current tests & MARCO tests in order to verify design specifications. The acceptance certification include WOLVERINE / HPT / GEWA-K & GEWA-KS

We can provide the integral low fin tubes with un-finned section gaps( 5mm Min.) in the middle of core tube OR bent with designed Bend Radius. The desiccants are put into the each package for continental transportation.


It has many uses such as heating systems, Ventilation systems, Refrigeration and climate control systems, Mechanical engineering, Automotive manufacturing and Chemicals and pertrochemical and power plant technology​


Tube Materials:
ASTM A213 / A213M :Seamless Ferritic & Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
ASTM A312/ A312M : Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
ASTM A269/ A269M :Seamless and Welded Austenitic Stainless Steel Tubing for General Service


Plain tube (mm) Finned section dimensions (mm) Ratio De
D×t Tp dd dr di η mm
19×2 0.8 18.8 17 134 2.8 17.9
19×2 1 18.8 16.8 13.4 2.5 17.8
19×2 1.25 18.8 16.6 13 2.2 17.8
19×2 1.5 18.8 16.6 13 2 17.7
19×2 2 18.8 16.4 13 1.7 17.5
25×2.5 0.8 24.8 23 18.8 2.8 23.9
25×2.5 1 24.8 22.6 18.8 2.75 23.7
25×2.5 1.25 24.8 22.3 18 2.5 23.6
25×2.5 1.5 24.8 22.3 18 2.2 23.5
25×2.5 2 24.8 22 18 1.8 23.4
25×2.5 2.5 24.8 22 18 1.6 23.3
D------Outside diameter of plain end section
Dof----Diameter of top fins
Dr-----Root diameter of finned section
Di-----Inside diameter of finned section
T------Wall thickness of plain end section
Tp-----Fin pitch
De----Equivalent diameter of finned tube
L------Plain tube end length
Please email us for more information.


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 habe 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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