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A179 Cold Drawn Low-Carbon Steel Tube For Heat Exchanger Or Condenser
Overview
The ASTM A179 is the standard specification for seamless cold-drawn carbon steel heat exchanger and condenser tubes. This standard is specifically designed for applications where efficient heat transfer is crucial, such as in heat exchangers, condensers, and other related systems. The standard for A179 seamless steel tube is developed by the American Society of Mechanical Engineers (ASME), specifically ASME SA179 or ASTM A179, which specifies the requirements for the manufacturing, chemical composition, mechanical properties, dimensional tolerances, and other aspects of the pipe material.
This type of tube is particularly suitable for tubular heat exchangers, condensers, and similar heat transfer equipment, as it has a small wall thickness and reliable quality and performance, which can meet the usage needs of various heat exchangers under different working conditions. A179 seamless steel tube is a high-quality tube suitable for specific applications, its manufacturing and use must comply with strict standards and specifications.
ASTM A179 - Key Points
1. Scope
The fluid being transferred is usually at a high temperature and requires heat exchange.
The tubes are used in non-corrosive and mildly corrosive environments.
2. Chemical Composition
Carbon (C): 0.05% max
Manganese (Mn): 0.30% - 0.60%
Phosphorus (P): 0.035% max
Sulfur (S): 0.035% max
The low carbon content ensures the material is ductile, weldable, and suitable for applications where forming and processing are required.
3. Mechanical Properties
Tensile Strength: Minimum tensile strength of 45,000 psi (310 MPa).
Yield Strength: Minimum yield strength of 25,000 psi (170 MPa).
Elongation: The elongation should be a minimum of 35% in 8 inches (200 mm) or 40% in 2 inches (50 mm), ensuring the material's flexibility.
4. Dimensions and Tolerances
Outer Diameter (OD): Generally ranges from 3/8 inch to 2 inches (9.5 mm to 50 mm).
Wall Thickness: The wall thickness of these tubes is usually thinner compared to other types of steel tubes, offering better heat transfer performance.
Length: Tubes can be cut to various lengths depending on the design and application requirements.
5. Testing
Flattening Test: The tube is flattened to test its ability to withstand pressure and deformation without cracking.
Hydrostatic Test: Each tube must undergo a hydrostatic test to check for leaks and ensure structural integrity.
Dimensional and Mechanical Tests: Tubes are checked for consistency in dimensions, tensile strength, yield strength, and elongation.
6. Manufacturing Process
The tubes are produced by the cold-drawing process, which involves pulling the tube through a die to reduce its diameter and increase the length. This process enhances the mechanical properties of the material and improves surface finish, contributing to better heat exchange performance.
7. Applications
Power Generation (e.g., steam condensers and cooling systems)
HVAC systems (heating and cooling systems)
Chemical and Petrochemical industries (where heat exchangers are used)
Refrigeration (where condensers are essential)
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
1990
Total Annual:
50M-75M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Holding Group equipments production base at Jiangsu Jiangyin City, Jinjiang City and Yancheng City. Total production area around 184000 square meters, main products : Heat Exchanger, Condenser, Pressure Vessel , Fired Heater, Economizer, Columns, Reactor.
... Yuhong Holding Group equipments production base at Jiangsu Jiangyin City, Jinjiang City and Yancheng City. Total production area around 184000 square meters, main products : Heat Exchanger, Condenser, Pressure Vessel , Fired Heater, Economizer, Columns, Reactor.
...
