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Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Specifications
Price :
800-1000 USD/Ton
Tolerance :
≤1/1000 of total length
Payment Terms :
L/C,T/T
Wall Thickness (WT) :
6.2 mm / 7.5 mm / 8 mm
Length :
1–12 meters (customizable)
Heat Treatment :
Normalized / Annealed
Packaging Details :
In bundles or in wooden boxes.
Standard :
ASTM A210 / ASTM A213
Brand Name :
Torich
Model Number :
SA213
Certification :
ISO 9001 TS16949
Place of Origin :
China
MOQ :
2tons
Supply Ability :
5000tons per year
Delivery Time :
30-45days
Material :
ASTM SA210 A1 / SA210 C / SA213 T2
Grade :
A1, C, T2
Outer Diameter (OD) :
28.6 mm / 38.1 mm / 63.5 mm / 66.7 mm
Description
8 Inner Ribbed Tube SA210C / A1 SA213 T2 28.6X6.2 38.1X7.5 63.5X7.5 66.7X8
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Inner-Ribbed Seamless Steel Tube for High-Efficiency Heat Transfer

Inner-ribbed seamless steel tubes (also known as internally threaded tubes) are precision cold-drawn or cold-rolled tubes engineered to enhance heat transfer efficiency in high-temperature environments. By forming continuous spiral ribs on the inner wall, these tubes significantly improve fluid turbulence, reduce steam film formation, and ensure uniform heat distribution—making them ideal for boiler evaporator systems and high-performance heat exchangers.

Technical Specifications
Parameter Description
Material ASTM SA210 A1 / SA210 C / SA213 T2
Standard ASTM A210 / ASTM A213
Grade A1, C, T2
Outer Diameter (OD) 28.6 mm / 38.1 mm / 63.5 mm / 66.7 mm
Wall Thickness (WT) 6.2 mm / 7.5 mm / 8 mm
Length 1-12 meters (customizable)
Tolerance OD: ±0.75% / WT: ±10%
Straightness ≤1/1000 of total length
Surface Condition Pickled / Oiled / Phosphated
Heat Treatment Normalized / Annealed
Key Features
  • Enhanced Heat Transfer Efficiency: Internal spiral ribs increase heat transfer coefficient by 1.5-2.5 times compared to plain tubes
  • Anti-Film Formation: Effectively disrupts steam film formation, improving thermal conductivity and preventing overheating
  • Uniform Wall Temperature: Reduces localized hot spots, minimizing risk of tube failure
  • Precision Rib Geometry: Rib count options (4, 6, 8, 12) with consistent pitch and depth ensure optimized fluid dynamics
  • High Dimensional Accuracy: Cold drawing process ensures tight tolerances and superior internal surface quality
Technical Advantages
How do you ensure consistent rib geometry and internal quality?

We utilize advanced cold-drawing mandrel technology combined with in-line dimensional inspection systems to maintain precise rib height, pitch, and uniformity across the full tube length.

Can the tubes withstand long-term high-temperature boiler conditions?

Yes. Materials such as SA213 T2 (Cr-Mo alloy steel) offer excellent creep resistance and oxidation resistance, making them suitable for prolonged exposure above 500°C.

How do you guarantee cleanliness and internal surface integrity?

All tubes undergo controlled atmosphere processing and protective gas treatment to prevent oxidation and contamination, ensuring clean internal surfaces critical for heat exchange efficiency.

Compliance Standards
  • ASTM: ASTM A210 / ASTM A213
  • EN: EN 10216-2
  • GOST: GOST 8732 / 8734
  • JIS: JIS G3461 / G3462
  • GB: GB/T 3087 / GB/T 5310
Primary Application

Boiler Evaporator Tubes in Thermal Power Plants

Chemical Composition (wt.%)
Grade C Mn Si Cr Mo
20G 0.17-0.23 0.35-0.65 0.17-0.37 -- --
SA210 A1 ≤0.27 ≤0.93 ≥0.10 -- --
SA210 C ≤0.35 0.29-1.06 ≥0.10 -- --
SA213 T2 0.10-0.20 0.30-0.61 0.10-0.30 0.51-0.81 0.44-0.65
15CrMoG 0.12-0.18 0.40-0.70 0.17-0.37 0.80-1.10 0.40-0.55
Mechanical Properties
Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Hardness
20G 410-550 ≥245 ≥24 --
SA210 A1 ≥415 ≥255 ≥30 ≤143 HBW
SA210 C ≥485 ≥275 ≥30 ≤179 HBW
SA213 T2 ≥415 ≥205 ≥30 ≤163 HRW
15CrMoG 440-640 ≥235 ≥21 --
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Frequently Asked Questions
Are you trading company or manufacturer?

Manufacturer, also can do trading.

How long is your delivery time?

Generally speaking, it is 10-15 days if the goods are in stock, or it is 30-40 days if the goods are not in stock, according to quantity.

Do you provide samples? Is it free or extra?

Yes, we could offer the sample for free charge but need pay the cost of freight.

What is your terms of payment?

Payment ≤ 2000 USD, 100% in advance. Payment ≥ 2000 USD, 30% T/T in advance, balance before shipment. If you have another question, please feel free to contact with me.

Product tags

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Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications

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Product Detail
Price :
800-1000 USD/Ton
Tolerance :
≤1/1000 of total length
Payment Terms :
L/C,T/T
Wall Thickness (WT) :
6.2 mm / 7.5 mm / 8 mm
Length :
1–12 meters (customizable)
Heat Treatment :
Normalized / Annealed
Contact Supplier
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications
Ribbed Tube with Enhanced Heat Transfer Efficiency Anti-Film Formation and Uniform Wall Temperature for High-Temperature Applications

TORICH INTERNATIONAL LIMITED

Verified Supplier
12 Years
zhejiang, ningbo
Since 1997
Business Type :
Manufacturer, Distributor/Wholesaler, Importer, Exporter, Trading Company, Seller
Main Products :
Precision Steel Tube, Seamless Steel Tube, Stainless Steel Tube
Total Annual :
25000000-30000000
Employee Number :
100~200
Certification Level :
Verified Supplier
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