| Customization: | Available |
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| After-sales Service: | Support |
| Warranty: | 1 Year |
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The ASTM A179 standard is integral to the production of seamless cold drawn low-carbon steel pipes, meticulously crafted for optimum performance in the construction of heat exchangers, condensers, and similar heat transfer devices. These precision-engineered steel tubes boast a slender wall thickness, making them exceptionally suited for tubular heat exchangers and advanced condensation systems, ensuring superior thermal efficiency.
Renowned for their exemplary heat transfer properties, ASTM A179 standard steel pipes offer not only robust mechanical strength but also unparalleled corrosion resistance. Their versatility makes them a preferred choice for use in critical equipment like heat exchangers and condensers, spanning across diverse industries such as petroleum, chemicals, pharmaceuticals, food processing, light manufacturing, machinery, and instrumentation.
A heat exchanger is a pivotal apparatus dedicated to the seamless transfer of heat between a hot fluid and a cold fluid, and is commonly referred to by the same name. Ubiquitous across various industrial sectors, including chemical, petroleum, power generation, and food production, heat exchangers are indispensable to operational efficiency. They serve multiple roles as heaters, coolers, condensers, evaporators, and reboilers, playing a crucial part in the enhancement of chemical production and beyond.
The heat exchange tube, an essential component nestled within the cylinder of a heat exchanger, facilitates the dynamic transfer of heat between two media. Renowned for its high thermal conductivity and excellent isothermal characteristics, this device ensures the rapid conveyance of thermal energy, enabling effective energy distribution and optimal thermal management.
The fundamental role of heat exchanger tubes is to facilitate the efficient transfer of heat between two or more fluids at varying temperatures, thereby enabling processes such as heating, cooling, condensation, and evaporation. The operational efficacy, durability, and overall service life of a heat exchanger are directly linked to the performance of these critical tubes.
Versatile Applications of Heat Exchanger Tubes Across Industries
1. Chemical Industry: Within the realm of chemical manufacturing, heat exchanger tubes are indispensable for critical processes such as heating reaction materials, product cooling, and waste heat recovery, thereby dramatically enhancing energy efficiency and sustainability.
2. Petroleum Industry: Throughout the intricate process of petroleum refining, heat exchanger tubes are pivotal in heating crude oil, ensuring seamless product separation, and facilitating various other processes vital to maintaining a streamlined production flow.
3. Power Industry: Within power generation facilities, including power plant boilers, heat exchanger tubes are crucial in regulating the temperature of fluids, thereby meeting the stringent thermal requirements essential for efficient power production.
4. Food Industry: In the realm of food processing, heat exchanger tubes perform vital roles in the precise heating and cooling of ingredients and finished products, ensuring stringent temperature control and quality assurance 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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