| Customization: | Available |
|---|---|
| After-sales Service: | Support |
| Warranty: | 1 Year |
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The ASTM A179 standard is an essential benchmark for those seeking seamless cold drawn low-carbon steel pipes specifically engineered for the demanding environments of heat exchangers, condensers, and similar high-efficiency heat transfer equipment. These pipes, known for their slender wall thickness, are the ideal choice for tubular heat exchangers and condensers, ensuring optimal performance and reliability in heat transfer operations.
ASTM A179 standard steel pipes are celebrated for their exceptional heat transfer capabilities, robust mechanical strength, and impressive corrosion resistance. These characteristics make them indispensable in a variety of industrial applications, including heat exchangers and condensers. Industries such as petroleum, chemical, pharmaceutical, food, light industry, machinery, and instruments routinely depend on these pipes for their vital processes, demonstrating their versatility and superior quality.
A heat exchanger is a pivotal device dedicated to the transfer of heat from a hot fluid to a cold one, often referred to simply as a heat exchanger. These devices are foundational in numerous industrial sectors, including chemical, petroleum, power, and food industries, playing a critical role in production efficiency. Heat exchangers serve multifunctional purposes as heaters, coolers, condensers, evaporators, and reboilers in chemical production, showcasing their broad applicability and importance.
The heat exchange tube is a crucial component nestled within a heat exchanger's cylinder, tasked with enabling the smooth transfer of heat between two media. Renowned for its high thermal conductivity and excellent isothermal properties, it stands as a powerful device capable of rapidly conveying thermal energy from one location to another, thereby enhancing the efficiency of the entire heat exchange process.
The primary mission of heat exchanger tubes is to facilitate heat transfer between two or more fluids at varying temperatures. Through this process, they efficiently carry out critical functions such as heating, cooling, condensation, and evaporation. The performance of these tubes is instrumental in defining the heat exchanger's overall efficiency, reliability, and durability, underscoring their vital role in industrial applications.
Application of Heat Exchanger Tubes in Different Industries
1. Chemical Industry: Within the realm of chemical production, heat exchanger tubes are indispensable in core processes like heating reaction materials, cooling end products, and recovering waste heat. These functions greatly enhance energy utilization efficiency, driving productivity and sustainability.
2. Petroleum Industry: Throughout the intricate processes of petroleum refining, heat exchanger tubes are employed to heat crude oil, facilitate product separation, and ensure the smooth progression of production operations.
3. Power Industry: In the power sector, especially within power plant boilers, heat exchanger tubes are leveraged to heat or cool fluids, aligning with the specific requirements of power generation.
4. Food Industry: In the dynamic field of food processing, heat exchanger tubes are crucial for the precise heating and cooling of food ingredients and products, ensuring meticulous temperature control throughout the production stages.
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Permissible Variations in Outside Diameter
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Outside Diameter
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Permissible Variations, in. [mm]
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| in. [mm] | over | under |
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Hot-Finished Seamless Tubes
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| 4[101.6] and under | 1/64[0.4] | 1/32[0.8] |
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Welded Tubes and Cold-Finished Seamless Tubes
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| under 1 [25.4] | 0.004[0.1] | 0.004[0.1] |
| 1 to 11/2 [25.4 to 38.1],incl | 0.006[0.15] | 0.006[0.15] |
| over 11/2 to 2[38.1 to 50.8],excl |
0.008 [0.2]
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0.008 [0.2] |
| 2 to 21/2 [50.8 to 63.5],excl |
0.010 [0.25]
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0.010 [0.25] |
| 21/2 to 3[63.5 to 76.2],excl |
0.012 [0.3]
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0.012 [0.3] |
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Permissible Variations in Wall Thickness
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Outside
Diameter,
in. [mm]
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Wall Thickness, %
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0.095 [2.4] and Under |
Over 0.095 to 0.150 [2.4 to 3.8], incl |
Over 0.150 to 0.180
[3.8 to 4.6], incl
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Over
0.180[4.6]
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|||||
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Over
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Under
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Over
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Under
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Over
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Under
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Over
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Under
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Seamless, Hot-Finished Tubes
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4 [101.6] and under
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40 | 0 | 35 | 0 | 33 | 0 | 28 | 0 |
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Seamless, Cold-Finished Tubes
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||||||||
| over | under | |||||||
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11/2[38.1] and under
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20 | 0 | ||||||
| over 11/2[38.1] | 22 | 0 | ||||||
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Welded Tubes
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All sizes
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18 | 0 | ||||||
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Permissible Variations in Weight Per Foot
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Method of Manufacture
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Permissible Variation in Weight
per Foot, %
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Over
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Under
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Seamless, hot-finished
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16 | 0 |
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Seamless, cold-finished:
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11/2 in. [38.1 mm] and under OD
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12 | 0 |
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Over 11/2 in. [38.1 mm] OD
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13 | 0 |
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Welded
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10 | 0 |
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Chemical Composition
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Carbon, %
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0.06-0.18
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Manganese, %
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0.27-0.63
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Phosphorus, max, %
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0.035
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Sulfur, max, %
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0.035
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tensile properties
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Tensile strength, min, ksi [MPa]
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47 [325]
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Yield strength, min, ksi [MPa]
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26 [180]
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Elongation in 2 in. or 50 mm, min, %
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35 |
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Hardness Requirements
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| Hardness,max,HRB | 72 |
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Mechanical Tests Required
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Flattening Test
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Extract 2 pcs from each batch and collect one specimen each for testing |
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Flaring Test
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Extract 2 pcs from each batch and collect one specimen each for testing |
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Flange Test
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Extract 2 pcs from each batch and collect one specimen each for testing |
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Hydrostatic Test
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Test one by one |
| Outer diameter of heat exchange tube(mm) | ||||||||||||
| 10 | 12 | 14 | 16 | 10 | 20 | 25 | 32 | 35 | 38 | 45 | 50 | 57 |
Q: Are you trading company or manufacturer?
A: We are professional manufacturer for steel pipes,and our company also is a very professional and technical foreign trade company for steel products. We have more export experience with competitive price and best after-sales service. Apart from this,we can provide a wide range of steel products to meet the requirement of customer.
Q:Will you delivery the goods on time?
A: Yes,we promise to provide best quality products and delivery on time no matter if the price change lot or not. Honesty is our company's tenet.
Q: Do you provide samples ? is it free or extra?
A: The sample could can provide for customer with free,but the freight will be covered by customer account. The sample freight will be returned to customer account after we cooperate.
Q: How can I get your quotation as soon as possible?
A: The email and fax will be checked within 24 hours,meanwhile,Wechat and WhatsApp will be online in 24 hours. Please send us your requirement and order information,specification(Steel grade,size,quantity,destination port),we will work out a best price soon.
Q: Do you have any certifications?
A: Yes,that's what we guarantee to our clients. we have IS09000,IATF16949 certinicate,ISO 14001 certificates etc.Our products are of high quality and we have professional engineers and development team.
Q: What is your terms of payment?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipmenit or paid against copy of B/L within 5 working days. 100% Irrevocable L/C at sight is favorable payment term as well.
Q: Do you accept the third party inspection?
A: Yes absolutely we accept.
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