| Base Tube Grade: | ASME SA335 P9， ASTM A335 P9， ASME SA213 T9， ASTM A213 T9 | Stud Material Grade: | 1Cr13， 2Cr13， 3Cr13， 11Cr， 13Cr， SS409， SS410 ， SS304 ， Carbon Steel ， Alloy Steel |
|---|---|---|---|
| Stud Hight: | 1/2inch(12.7mm)， 5/8inch（15.875mm）， 3/4inch (19.05mm)， 7/8inch(22.23mm)， 1inch (25.4mm)，… | Stud Dia.: | 12.7mm， 15.88mm ，… |
| Fin Type: | Solid Fin ， High Frequence Weldding ， HFW， .. | Application: | Oil Furnace Tube ， Steam Furnace Tube， Reforming Tube |
| High Light: | Steam Reforming Furnace Finned Tube， A106 HFW Type Fin Tube | ||
ASTM A213 T9 ASME SA213 T11 Studded Fin Tube ，Steam Reforming Furnace
TONG CHUANG GROUP Studded tube is mainly used in petrochemical and coal chemical industry for tubular heating furnace， convection heat exchanger， air preheater， chemical equipment， heat exchange equipment. To expand the heat transfer area of the light tube by 2 to 3 times， it can improve the heat transfer coefficient of the flue gas side， improve the comprehensive thermal efficiency of the equipment， and is an energy-saving heat transfer element. Its main function is to expand the heat transfer area of the tube and improve the thermal efficiency of the heating furnace.
TONG CHUANG GROUP ASME SA213 T9 / ASTM A213 T9 material is the U.S. standard production of high temperature with chromium-molybdenum alloy heat-resistant steel， because of its good oxidation resistance， high temperature strength and resistance to sulfide corrosion performance， widely used in petroleum refining devices high temperature， high pressure， flammable， explosive pipeline， especially the heating furnace direct heat pipe， the medium temperature up to 550 ~ 600 ℃
Chemical Composition of A213 T9
| Compositions | Data |
| UNS Designa-tion | K41545 |
| Carbon(max.) | 0.15 |
| Manganese | 0.30-0.60 |
| Phosphorus(max.) | 0.025 |
| Sulfur(max.) | 0.025 |
| Silicon(max.) | 0.50 |
| Nickel | … |
| Chromium | 4.00-6.00 |
| Molybdenum | 0.45-0.65 |
| Other Elements | … |
Mechanical Properties of A213 T9
| Properties | Data |
| Tensile strength， min， (MPa) | 415 Mpa |
| Yield strength， min， (MPa) | 205 Mpa |
| Elongation， min， (%)， L/T | 30/20 |
Application:
Heat Exchangers
Boilers
Power Plants
Refineries
Waste-to-Energy Plants
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.
