| Customization: | Available |
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| After-sales Service: | Support |
| Warranty: | 1 Year |
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The ASTM A179 standard is a hallmark of quality for seamless cold drawn low-carbon steel pipes, meticulously engineered for the production of heat exchangers, condensers, and similar heat transfer equipment. With their reduced wall thickness, these pipes are particularly adept at optimizing the efficiency of tubular heat exchangers, condensers, and comparable apparatus, ensuring superior performance in heat transfer tasks.
ASTM A179 standard steel pipes are renowned for their exceptional heat transfer capabilities, mechanical strength, and robust resistance to corrosion. These attributes make them indispensable in a wide array of industries, including petroleum, chemical, pharmaceutical, food, light industry, machinery, and instrumentation, where they are vital components in heat exchangers and condensers, enhancing operational efficiency and durability.
A heat exchanger is a pivotal device tasked with transferring heat from a hot fluid to a cold one, epitomizing its role in thermal management across numerous industrial sectors like chemical, petroleum, power, and food production. These dynamic instruments serve crucial functions as heaters, coolers, condensers, evaporators, and reboilers, profoundly influencing the production efficiency by optimizing thermal energy management.
The heat exchange tube, an integral part of the heat exchanger, resides within the cylinder, facilitating the thermal exchange between two media. Its high thermal conductivity and excellent isothermal attributes make it an essential device for the rapid transfer of thermal energy, ensuring swift and efficient heat distribution across processes.
The primary role of heat exchanger tubes is to enable seamless heat transfer between multiple fluids at varying temperatures, effectively executing processes such as heating, cooling, condensation, and evaporation. The efficacy of these tubes directly impacts the heat exchanger's efficiency, reliability, and longevity, solidifying their critical status in industrial applications.
Application of heat exchanger tubes in different industries
1. Chemical industry: Within chemical production, heat exchanger tubes are instrumental in crucial operations like the heating of reactants, product cooling, and waste heat recovery, thereby substantially boosting energy utilization efficiency and enhancing overall process effectiveness.
2. Petroleum industry: During the intricate process of petroleum refining, heat exchanger tubes are pivotal in heating crude oil, separating products, and facilitating other essential procedures, ensuring the continuity and efficiency of the production process.
3. Power industry: In power plant systems, including boilers, heat exchanger tubes play a crucial role in heating or cooling fluids, thereby aligning with the specific thermal demands of power generation, ensuring optimal production efficiency.
4. Food industry: Throughout food processing, heat exchanger tubes are employed to precisely heat and cool food ingredients and products, thereby maintaining stringent temperature control essential for quality assurance and production efficiency.
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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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