Technical Data
|
Items
|
Code
|
Dimensions
|
Tolerances
|
|
Tube outside diameter
|
D1
|
Φ25~Φ219 mm
|
±0.2 mm
|
|
Fin outside diameter
|
D2
|
Φ37~Φ279 mm
|
±0.75 mm
|
|
Fin pitch
|
M
|
4~90 mm
|
±0.2 mm
|
|
Fin height
|
H
|
6~30 mm
|
±0.75 mm
|
|
Tube thickness
|
δ1
|
2~16 mm
|
±0.15 mm
|
|
Fin thickness
|
δ2
|
0.8~2.5 mm
|
±0.1 mm
|
|
Unfinned tube ends length
|
L1
|
customized
|
±1‰*L1 mm
|
|
Unfinned tube ends length
|
L2
|
customized
|
±1‰*L2 mm
|
|
Maximum tube length
|
L
|
0.5~25 m
|
±1‰*L mm
|
FAQ
1.Q: Are you a factory or trading company?
A: We are professional manufacturer, and our company also is a very professional a trade company for steel products.We can provide a wide range of steel products.
2.Q:What do your factory do regarding quality control?
A: We have obtained ISO, CE and other certifications. From materials to products, we check every process to maintain good quality.
3.Q: Can I get samples before order ?
A: Yes, of course. Usually our samples are free. we can produce by your samples or technical drawings.
4.Q:How do you make our business long-term and good relationship?
A:We keep good quality and competitive price to ensure our customers benefit ; We respect every customer as our friend and we sincerely do business and make friends with them. No matter where they come from.
5.Q:what is your delivery time ?
A: Our delivery time is about one week, timing according to the number of customers.
