Yuhong Group Co.,Ltd
| Payment Terms | T/T,L/C |
| Supply Ability | 1000 Tons per month |
| Delivery Time | 7-45 Days |
| Packaging Details | Ply wooden case, Woven bag |
| Brand Name | YUHONG |
| Model Number | ASTM A179 |
| Certification | CE, TUV, PED, ABS, LR, BV, DNV-GL, CCS, KR, NK |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T,L/C | Supply Ability | 1000 Tons per month |
| Delivery Time | 7-45 Days | Packaging Details | Ply wooden case, Woven bag |
| Brand Name | YUHONG | Model Number | ASTM A179 |
| Certification | CE, TUV, PED, ABS, LR, BV, DNV-GL, CCS, KR, NK | Place of Origin | China |
| High Light | ASTM A179 seamless steel tube ，cold-drawn heat exchanger tube ，condenser tube with warranty | ||
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.
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.
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 % |
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.
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.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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