ASTM A179 Seamless Cold-Drawn Steel Tube Heat Exchanger & Condenser Tube
Price:
Negotiable
MOQ:
100 KGS
Delivery Time:
7-45 Days
Brand:
YUHONG
Product Description
ASTM A179 Seamless Cold-Drawn Steel Tube Heat Exchanger & Condenser Tube
Product Introduction & Standard Specification
The ASTM A179 / A179M Seamless Cold-Drawn Low-Carbon Steel Tube is a premium-grade tubing specifically engineered for high-efficiency heat transfer applications. This specification covers seamless, cold-drawn tubes with a minimum wall thickness, making them ideal for constructing reliable and compact heat exchangers, condensers, and similar thermal equipment.
The standard applies to tubes with outside diameters ranging from 1/8 inch to 3 inches (3.2 mm to 76.2 mm). It's important to note that mechanical property requirements do not apply to tubes with an outside diameter smaller than 1/8 inch [3.2 mm] or a wall thickness under 0.015 inches [0.4 mm]. This product conforms to the latest ASTM A179/A179M-24 standard and often meets the complementary general requirements of ASTM A450/A450M.
Material & Manufacturing Process
This tube is manufactured from low-carbon steel using a seamless process, ensuring there are no welded seams that could be potential failure points under thermal cycling and pressure. The final dimensional accuracy and enhanced mechanical properties are achieved through a cold-drawing process. The steel is produced under controlled conditions, with both heat (melt) analysis and product analysis performed to guarantee chemical composition conformity.
Chemical Composition & Mechanical Properties
The chemical composition is tightly controlled to ensure optimal weldability, formability, and corrosion resistance. A typical optimized composition for high-performance tubes is shown below.
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.06 - 0.18 |
| Manganese (Mn) | 0.27 - 0.63 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
The cold-drawing and subsequent heat treatment give the tubes excellent mechanical properties, often exceeding the minimum standard requirements for strength and ductility.
| Property | ASTM A179 Requirement |
|---|---|
| Tensile Strength | ≥ 325 MPa (47 ksi) |
| Yield Strength | ≥ 180 MPa (26 ksi) |
| Elongation (in 2 inches or 50 mm) | ≥ 35 % |
Key Features & Testing
To guarantee integrity, every tube undergoes a series of stringent tests as per the standard:
- Hydrostatic Test: Verifies pressure tightness and strength.
- Flattening Test & Flaring Test: Assess ductility and the ability to withstand forming without cracking.
- Hardness Test: Ensures material consistency.
- Non-Destructive Electric Test: Often performed (e.g., eddy current) to check for imperfections.
- Surface Condition: Tubes are supplied free of scale, with advanced options like pickling and passivation available for a superior surface finish (e.g., Ra ≤ 0.8μm) that improves heat transfer and corrosion resistance.
Product Applications
ASTM A179 tubes are the material of choice for critical heat transfer surfaces across industries:
- Power Generation: Condenser and feedwater heater tubes in fossil-fuel and nuclear power plants.
- Oil & Gas / Petrochemical: Heat exchangers, coolers, and condensers in refineries and chemical processing plants.
- Marine Industry: Shell-and-tube heat exchangers for engine cooling and other shipboard systems.
- HVAC & Refrigeration: Components in industrial cooling systems and evaporators.
- Industrial Boilers: As boiler tubes where high thermal conductivity is needed.
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Company
Yuhong Group Co.,Ltd
Location
20TH FLOOR,NO.1 NEW WORLD BUILDING ,NO.1018 MINAN ROAD,YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE, CHINA
Contact Person
Jikin Cai