| Customization: | Available |
|---|---|
| After-sales Service: | Support |
| Warranty: | 1 Year |
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The esteemed ASTM A179 standard pertains to seamless cold drawn low-carbon steel pipes, ingeniously crafted for the manufacture of heat exchangers, condensers, and other sophisticated heat transfer equipment. These pipes boast a uniquely small wall thickness, rendering them exceptionally suitable for tubular heat exchangers, condensers, and similar advanced heat transfer apparatus.
ASTM A179 standard steel pipes are renowned for their superior heat transfer performance, robust mechanical strength, and outstanding corrosion resistance. These pipes are extensively utilized in essential equipment like heat exchangers and condensers across various industries, including petroleum, chemical, pharmaceutical, food, light industry, machinery, and instrumentation.
A heat exchanger is an ingenious device designed to transfer a portion of heat from a hot fluid to a cold fluid, commonly referred to as a heat exchanger. These devices are quintessential in numerous industrial sectors such as chemical, petroleum, power, and food, playing a pivotal role in production. Heat exchangers serve multifaceted purposes as heaters, coolers, condensers, evaporators, and reboilers in the chemical production domain, underscoring their extensive applicability.
The heat exchange tube, a crucial component of a heat exchanger, is strategically placed within the cylinder to facilitate the exchange of heat between two media. It is lauded for its high thermal conductivity and excellent isothermal properties, enabling swift transfer of thermal energy from one point to another with remarkable efficiency.
The principal function of heat exchanger tubes is to facilitate heat transfer between two or more fluids at varying temperatures, thereby enabling processes such as heating, cooling, condensation, and evaporation. The performance of these tubes is critical, directly impacting the heat transfer efficiency, reliability, and longevity of the heat exchanger.
Application of Heat Exchanger Tubes Across Varied Industries
1. Chemical Industry: Within chemical production, heat exchanger tubes play a pivotal role in key processes such as heating reaction materials, cooling products, and reclaiming waste heat, thereby remarkably boosting energy utilization efficiency.
2. Petroleum Industry: During petroleum refining, heat exchanger tubes are indispensable in heating crude oil, facilitating product separation, and other vital processes, ensuring seamless progression of the production cycle.
3. Power Industry: In power plant equipment such as boilers, heat exchanger tubes are essential for heating or cooling fluids, adeptly meeting the demands of power generation.
4. Food Industry: In the realm of food processing, heat exchanger tubes are integral in heating and cooling food ingredients and products, ensuring precise temperature control throughout the production process.
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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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