Dellok Yonghui Radiating Pipe Manufacturing Co.,Ltd.
Dellok YONGHUI TECH Co.,Ltd. Dellok Yonghui Radiating Pipe Manufacturing Co.,Ltd.
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H HH Fin Bends DIN 17175 304 Stainless Steel Square Tube
DIN 17175 ST35.8 / I SMLS Carbon Steel Square H Fin Tubing with 90 Degree Bends
Description:
| Standard | DIN17175 |
| Material | St37.2,St35.4/8,St42,St45,St52,St52.4, A53B, A106B, API5LB,X42,X46,X52,X60, X65 STP G38,STP G42,STPT42,STB42,STS42,STPT49,STS49 |
| End protection | Plastic Caps |
| Outside coating | Black painting, anti-corrosion oil, galvanized or as per required by customers |
| Packing | wooden boxes, plastic film bags or according to different customers’ requests |
| Inspection and test | UT, ET, HT, RT, etc. and others according to the standard, or as the requests of the customers |
| Delivery condition | Annealed, Normalized, Normalized and tempered |
| Product Details | |
| Tube details: | Tube OD: 73 mm max. |
| Tube Length: 18 meters max. | |
| Fin Thickness: 1.5mm ~3.5mm | |
| Fin Pitch: 10mm Min. | |
| Production Capacity: | Daily capacity up to 20 tons; |
Manufacturing Process
Square or Rectangular H Fins are welded on a steel base tube. We call it H Fin Type Tubing.
Acceptance Criteria
Approved drawing and the delivery conditions (TDC) of clients.
Additional Services
Tube swaging, elbows, bends(90° / 180° or as per client's design).
Quality Tests
The Square or Rectangualr H Finned Tube quality is assured by hydrostatic or pneumatic tests, eddy current tests and tensile tests in order to verify the mechanical bonding between inner tubes and outer fins.
Surface Coating
Outside-Red oxide zinc phosphate primer and inside volatile corrosion inhibitor (VCI) in water soluble tablet form.
Delivery Condition: Tube ends are square cut, free burrs, internally dried and air blown clean, externally coated with varnish at both ends of Square or Rectangualr Fin Tube.
Applications:
Economizers ,
Heat exchangers
Marine boilers
Specifications:
| Items | General Materials | Popular ASTM /ASME Materials |
| Core Tube Material | Carbon Steel | 1. Carbon Steel: A106 / A179 /A192 / A210 etc... |
| Studs | Carbon Steel | 1. Carbon Steel
|
Dimensions Data Sheet We're Supplying.
| General Descriptions of H-fins | Popular Specifications we make |
| Tube OD(mm) | 25mm to 73mm |
| Tube Wall thickness(mm) | 2.5mm Min. |
| Tube length(mm) | 18000mm Max. |
| Fin thickness(mm) | 1.5mm to 3.5mm |
| Fin pitch(mm) | 10mm Min. |
| Please email us for more information. | |
Competitive Advantage:
We have more than 10,000 square meters workshop, including 6 H-FIN TYPE finning machines, daily extrusion capacity up to 20 tons.
The Square or Rectangular Fins H-Finned Tubes are the preferred tube choice for high pressure boilers.
Fins can be manufactured by stamping process in almost any shape and size.
In-line fin and tube spacing allows for cleaning with excellent choice in sooting or fouling atmospheres.
Fin height and spacing are limited only by heat transfer considerations.
Fins and tubing can be similar or dissimilar metals.
