| Customization: | Available |
|---|---|
| After-sales Service: | Support |
| Warranty: | 1 Year |
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The ASTM A179 standard is the epitome of excellence for seamless cold drawn low-carbon steel pipes, meticulously crafted for the manufacture of high-efficiency heat exchangers, condensers, and similar heat transfer marvels. These pipes boast a slender wall thickness, making them the perfect choice for state-of-the-art tubular heat exchangers, condensers, and other advanced heat transfer equipment.
ASTM A179 standard steel pipes stand out with their superior heat transfer capabilities, reliable mechanical strength, and robust corrosion resistance. They are indispensable in the production of heat exchangers and condensers, finding widespread application in diverse industries such as petroleum, chemical, pharmaceutical, food, light industry, machinery, and instruments, proving their versatility and reliability.
A heat exchanger is a sophisticated device designed to transfer heat efficiently from a hot fluid to a cold fluid, earning its reputation as a pivotal component across sectors like chemical, petroleum, power, and food industries. They are instrumental in production, functioning as heaters, coolers, condensers, evaporators, and reboilers within chemical manufacturing, underscoring their indispensability in multiple industrial applications.
The heat exchange tube is a critical component within a heat exchanger, strategically positioned inside the cylinder to facilitate the efficient transfer of heat between two media. Renowned for its high thermal conductivity and exceptional isothermal properties, it serves as a dynamic conduit for swift thermal energy transfer, optimizing the heat exchange process.
The primary role of heat exchanger tubes is to facilitate heat transfer between multiple fluids at varying temperatures, accomplishing vital processes such as heating, cooling, condensation, and evaporation. The performance of these tubes is crucial, directly influencing the heat exchanger's efficiency, reliability, and longevity, ensuring consistent and effective heat transfer solutions.
Application of heat exchanger tubes in different industries
1. Chemical industry: Heat exchanger tubes are pivotal in chemical production, playing an essential role in processes like the heating of reaction materials, cooling of products, and waste heat recovery, thereby markedly enhancing energy utilization efficiency and operational efficacy.
2. Petroleum industry: Heat exchanger tubes are vital in petroleum refining, where they are integral to heating crude oil, product separation, and other processes, ensuring the seamless progression and optimization of production activities.
3. Power industry: In the realm of power generation, heat exchanger tubes are crucial components in power plant boilers, where they adeptly heat or cool fluids to meet the rigorous demands of power production, maintaining efficiency and reliability.
4. Food industry: During the intricate processes of food production, heat exchanger tubes are essential for the precise heating and cooling of food ingredients and products, guaranteeing meticulous temperature control and quality assurance 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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