ASME SA179 Cold Drawn Seamless Carbon Steel Tube
For Heat Exchanger & Condenser – OD 6~204mm | WT 1~18mm
Product Overview
Our ASME SA179 / ASTM A179 seamless cold drawn low carbon steel tubes are specifically designed for heat exchangers, condensers, and similar heat transfer apparatus. Manufactured by the cold drawing process at our Wuxi facility, these tubes deliver tight dimensional tolerances, smooth internal surfaces, and uniform wall thickness for optimal heat transfer efficiency.
Key Specifications:
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Standard: ASME SA179 / ASTM A179
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Material: Low Carbon Steel (≤0.25% C)
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Outer Diameter: 6mm – 204mm (Standard Stock: 19mm – 89mm)
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Wall Thickness: 1mm – 18mm
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Length: 3m – 12m (Custom lengths available)
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Manufacturing Process: Cold Drawn (Seamless)
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Surface Finish: Bright Annealed / As-drawn / Oiled
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Hardness: ≤72 HRB – excellent for tube expansion
✅ ASME SA179 certified – Compliant with ASME Boiler & Pressure Vessel Code Section II
✅ Seamless cold drawn – No weld seam – crevice-free corrosion resistance
✅ Low carbon content (≤0.25%) – Superior ductility for rolling and U-bending
✅ 100% hydrostatic & eddy current tested – Guaranteed leak-free bundles
✅ EN 10204 Type 3.1 MTC provided with heat number
✅ Factory direct – Competitive pricing and fast delivery
Chemical Composition
Element
Requirement
Significance
Carbon (C)
≤0.25%
Ensures ductility for tube expansion
Manganese (Mn)
0.27% – 0.63%
Provides strength
Phosphorus (P)
≤0.035%
Low for good formability
Sulfur (S)
≤0.035%
Low for good formability
💡 Low carbon content ensures tubes can be rolled, expanded, and U-bent without cracking – critical for heat exchanger fabrication.
Mechanical Properties
Property
Value
Significance
Tensile Strength
≥325 MPa (47,000 psi)
Adequate for heat exchanger pressures
Yield Strength
≥180 MPa (26,000 psi)
Low yield ensures good expansion
Elongation
≥35%
Excellent ductility for rolling
Hardness (HRB)
≤72
Soft – easy rolling, no over-rolling damage
Dimensional Tolerances
OD (mm)
Tolerance (mm)
WT (mm)
Tolerance (mm)
<25.4
±0.10
<2.0
±0.10
25.4 – 38.1
±0.13
2.0 – 3.0
±0.12
38.1 – 50.8
±0.15
>3.0
±0.15
50.8 – 76.2
±0.20
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Manufacturing Process – Cold Drawing
Cold Drawing Process Highlights:
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Hot rolled tubes are used as starting material
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Pickling removes scale – prepares the surface for cold working
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Cold drawing reduces diameter – increases strength and achieves precise dimensions
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Annealing relieves stress – restores ductility
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Straightening – ensures straightness tolerance
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Precision cutting – to exact customer length requirements
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100% NDT and hydrostatic testing – guarantees integrity
Key Applications
Industry
Equipment
Tube Size
Connection
Power Generation
Surface Condensers
5/8″ OD, 18 BWG
Rolled
Chemical Processing
Shell & Tube Heat Exchangers
1″ OD, 14 BWG
Rolled / Weld
HVAC
Chiller Evaporators / Condensers
1/2″ – 3/4″ OD
Rolled
Marine
Oil Coolers
5/8″ – 3/4″ OD
Rolled
Petrochemical
Process Coolers
3/4″ – 1-1/4″ OD
Weld
Why Choose Our ASME SA179 Tubes?
Advantage
Description
Cold drawing specialist
Dedicated cold drawing line for precise dimensions
Wide size range
OD 6-204mm – one-stop sourcing
Standard stock sizes
19-89mm – ready for immediate shipment
Low hardness (≤72 HRB)
Easy tube expansion – no cracking
Smooth ID/OD
Optimal heat transfer – minimal fouling
100% ECT + hydrostatic
Leak-free tube bundles
Full traceability
EN 10204 3.1 MTC with heat number
Contact for Quote
📧 Email: yjhtrade@gmail.com
📞 WhatsApp: +86 15106174543
🌐 Website: www.hzhmetals.com / www.wuxihengzhihui.com
Contact Person: Alice Yuan
Reply within 24 hours.
Tags: ASME SA179 Heat Exchanger Tube Condenser Tube Cold Drawn Seamless Tube Low Carbon Steel Tube SA179 Tube Power Plant Condenser
