| Grade: | Gr. A， Gr. B ， Gr. C 10# ， 20% 16Mn ，20G， A1 P11， P22， P5， P9， P91 | Standard: | ASTM A213， ASTM A312， ASTM A335 ， ASTM A790 ， ASTM A106 |
|---|---|---|---|
| Packing: | Ply-Wooden Case， Iran Case | Delivery Time: | 5—15 Days |
| Fin Material: | 11 Cr ， 13 Cr， SS409， SS410 | ||
| High Light: | finned copper tube， extruded finned tube | ||
ASTM A335 P9 with 11 Cr/ 13 Cr Studded Fin Tube ， Pin Tube
Description:
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… |
Fin | Carbon Steel | 1. Carbon Steel |
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 of TONG CHUANG 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.
