| Customization: | Available |
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| After-sales Service: | Support |
| Warranty: | 1 Year |
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The ASTM A179 standard caters to the specialized requirements of seamless cold drawn low-carbon steel pipes. These exceptional pipes are expertly crafted for the manufacture of a wide array of heat transfer equipment, including heat exchangers and condensers. Known for their delicate wall thickness, they are the optimal choice for tubular heat exchangers, condensers, and similar heat transfer devices, ensuring superior performance and reliability.
ASTM A179 standard steel pipes boast outstanding heat transfer capabilities, remarkable mechanical strength, and robust corrosion resistance. These qualities make them indispensable in various industries such as petroleum, chemical, pharmaceutical, food, light industry, machinery, and instrumentation. They are extensively employed in equipment like heat exchangers and condensers, serving as a cornerstone for efficient operations across these sectors.
Heat exchangers are pivotal devices designed to facilitate the transfer of heat from a hot fluid to a cold one, ensuring optimal temperature regulation. Found across diverse industrial landscapes including chemical, petroleum, power, and food sectors, heat exchangers are essential for seamless production processes. They serve versatile functions as heaters, coolers, condensers, evaporators, and reboilers, underscoring their wide-ranging applicability in chemical production and beyond.
At the heart of a heat exchanger lies the heat exchange tube, ingeniously positioned inside the cylinder to mediate the heat exchange between two media. Renowned for their high thermal conductivity and excellent isothermal properties, these tubes serve as critical devices, swiftly and efficiently channeling thermal energy from one location to another with precision.
Heat exchanger tubes perform the crucial task of facilitating heat transfer between multiple fluids at varying temperatures. Through this dynamic process, they enable essential operations such as heating, cooling, condensation, and evaporation. The efficacy of heat exchanger tubes directly influences the heat transfer efficiency, reliability, and longevity of the entire heat exchanger system.
Application of heat exchanger tubes in different industries
1. Chemical industry: Within the chemical production realm, heat exchanger tubes are integral to key processes, including heating reactive materials, cooling end products, and harnessing waste heat. Their application significantly elevates energy utilization efficiency, propelling productivity.
2. Petroleum industry: In the intricate process of petroleum refining, heat exchanger tubes play a vital role. They are employed in heating crude oil, separating various products, and other critical processes, ensuring the seamless advancement of production operations.
3. Power industry: Heat exchanger tubes are vital components in power plant boilers and other equipment, where they are tasked with heating or cooling fluids to accommodate the precise requirements of power production, enabling efficient and reliable energy generation.
4. Food industry: During food processing, heat exchanger tubes are essential for maintaining stringent temperature control. They efficiently heat and cool food ingredients and products, safeguarding quality throughout the production process and enhancing product consistency.
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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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