| Customization: | Available |
|---|---|
| After-sales Service: | Support |
| Warranty: | 1 Year |
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The ASTM A179 standard defines the pinnacle of excellence for seamless cold drawn low-carbon steel pipes, crafted for supreme performance in heat exchangers, condensers, and similar sophisticated heat transfer systems. These meticulously designed steel pipes feature a slender wall thickness, perfectly tailored for optimal functionality in tubular heat exchangers, condensers, and a broad array of heat transfer equipment.
Embodying superior heat transfer capabilities, ASTM A179 standard steel pipes also boast commendable mechanical strength and robust corrosion resistance. Their versatility makes them indispensable in an array of equipment across industries such as petroleum, chemical, pharmaceutical, food, light industry, machinery, and instrumentation, particularly in applications involving heat exchangers and condensers.
A heat exchanger serves as a pivotal device in transferring heat from a hot fluid to a cold fluid, a process central to many industries including chemical, petroleum, power, and food sectors. These versatile devices are indispensable in production, efficiently functioning as heaters, coolers, condensers, evaporators, and reboilers, particularly in chemical manufacturing.
The heat exchange tube, a critical component of a heat exchanger, resides within the cylinder to facilitate thermal energy transfer between two media, boasting high thermal conductivity and exceptional isothermal properties. This device ensures rapid and efficient transfer of thermal energy, enhancing the overall functionality of heat exchangers.
The primary role of heat exchanger tubes lies in facilitating heat transfer between fluids at varying temperatures, thus enabling processes such as heating, cooling, condensation, and evaporation. The efficiency, reliability, and longevity of heat exchangers are profoundly influenced by the performance of these tubes.
Application of heat exchanger tubes in different industries
1. Chemical industry: Within the realm of chemical production, heat exchanger tubes are integral to crucial processes including heating reaction materials, cooling products, and waste heat recovery, thereby substantially maximizing energy utilization efficiency.
2. Petroleum industry: In the intricate process of petroleum refining, heat exchanger tubes are pivotal for heating crude oil, product separation, and various other essential processes, ensuring seamless and efficient production flows.
3. Power industry: Within the realm of power generation, heat exchanger tubes are vital components in power plant boilers, adeptly heating or cooling fluids to fulfill the rigorous demands of power production.
4. Food industry: Heat exchanger tubes play a critical role in food processing, expertly managing the heating and cooling of food ingredients and products, ensuring precise temperature regulation throughout the production cycle.
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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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