Petroleum Cracking Studded Finned Tubes
Petroleum cracking studded finned tubes are critical components used to enhance heat transfer in catalytic cracking units of refineries. They significantly improve heat exchange efficiency through needle-shaped structures (studs) welded to the surface, and also possess self-cleaning capabilities, effectively reducing fouling problems.
- Base Tube Material:
CS (A106, A333, A179, A210, P5, P11, P22)
SS (SS304, SS316, Duplex SS2205, Super Duplex SS32750)
Nickel Alloys (825, Inconel Alloy 625, High chrome high nickle incoloy alloy Monel 400) - Tube OD:15.88mm~273mm or customized
I. Surface Manufacturing Requirements for Petroleum Cracking Studded Finned Tubes:
1. The base tube surface should not have defects such as pits, dents, folds, creases, or grooves exceeding 0.3 mm in depth. If there are defects exceeding the limit, grinding is permitted, but the wall thickness after grinding shall not be less than the specified minimum wall thickness.
2. The straightness of the base tube of the petroleum cracking studded finned tube shall not exceed 2.5 mm in any 3 m section, and the straightness of the total length shall not exceed 6 mm.
3. The base tube should preferably be a single, seamless steel pipe without splices. If splicing is necessary, written consent from the buyer must be obtained, and the welding form, location, and inspection requirements shall be confirmed by the buyer. The welding of the steel pipe shall comply with the provisions of SH 3085 or SH/T 3417.
II. Material Requirements for Petroleum Cracking Studded Finned Tubes:
1. When carbon structural steel is used for the studs of the petroleum cracking studded finned tubes, it shall comply with the provisions of GB/T 700; when high-quality carbon structural steel is used, it shall comply with the provisions of GB/T 699; when heat-resistant steel is used, it shall comply with the provisions of GB/T 1221; when stainless steel is used, it shall comply with the provisions of GB/T 1220. The shape and dimensions of hot-rolled steel bars of various materials shall comply with the provisions of GB/T 702; the shape and dimensions of cold-drawn steel bars shall comply with the provisions of GB/T 905.
2. The studs of the petroleum cracking studded finned tubes should preferably be cold-drawn from steel bars 2 mm larger than the design diameter.
- Datasheet
- Drawing
- Certificates
| Parameter | Specification |
|---|---|
| Base Tube Material | CS (A106, A333, A179, A210, P5, P11, P22), SS (SS304, SS316, Duplex SS2205, Super Duplex SS32750), Nickel Alloys (825, Inconel Alloy 625, High chrome high nickel incoloy alloy Monel 400) |
| Tube OD | 15.88 mm ~ 273 mm or customized |
| Tube Wall Thick | 2 mm ~ 28.6 mm |
| Length | 1 Meters to 28 Meters (92 feet) |
| Fin Material | CS (08F, SPCC), SS (SS304, SS316, 409, 410, 321, 347) |
| Fin Height | 8 mm ~ 35 mm |
| Fin Thick | 1 mm ~ 1.5 mm |
| Fin Pitch | 3 ~ 333 FPM (1 FPI ~ 7 FPI) |
| Fin Type | Solid, U Type, S Type, Serrated |
| Finned tube welding rate | more than 98% |
| Tube Ends | Plain cut or beveled at any degree |
Studded Finned Tubes Appearance Dimension Inspection
Studded finned tubes appearance dimension inspection is one of the important links to ensure the quality and performance of fin tubes.
The inspection items mainly include fin height, fin spacing, fin thickness, base tube wall thickness and outer diameter, etc.
Welded Studded Fin Tube Manufacturing Machine
The stud tube manufacturing equipment is a specialized device used for welding studs onto the surface of heat transfer tubes. Its core function is to create a dense structure of studs on the tube surface through resistance welding, thereby increasing the heat transfer area and enhancing the heat transfer effect on the flue gas side.
Finned and Studded Tubes Package
Payment Terms:T/T, LC
Delivery: 15-30 days after payment
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Iron frame packing boxes and the desiccants are put into each package for continental transportation as well. or as required
