| Customization: | Available |
|---|---|
| After-sales Service: | Support |
| Warranty: | 1 Year |
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Crafted to adhere to the ASTM A179 standard, these seamless cold drawn low-carbon steel pipes redefine precision in the manufacture of heat exchangers, condensers, and other heat transfer equipment. With a distinctively small wall thickness, these pipes are engineered to excel in tubular heat exchangers, condensers, and similar devices, ensuring superior performance.
ASTM A179 standard steel pipes are renowned for their exceptional heat transfer capabilities, robust mechanical strength, and outstanding corrosion resistance. These attributes make them indispensable in heat exchangers and condensers across diverse industries such as petroleum, chemicals, pharmaceuticals, food processing, light industry, machinery, and instrumentation.
A heat exchanger is an ingenious device that efficiently transfers heat from a hot fluid to a cold one, enriching its role in industries like chemical, petroleum, power, and food processing. These versatile machines can function as heaters, coolers, condensers, evaporators, and reboilers, making them integral to a wide range of industrial processes.
The heat exchange tube, a critical component nestled within the heat exchanger's cylinder, is designed for optimal heat transfer between two media. Boasting high thermal conductivity and exceptional isothermal properties, this device swiftly channels thermal energy from one point to another, enhancing efficiency.
Heat exchanger tubes are engineered to facilitate seamless heat transfer between multiple fluids at varying temperatures, thereby executing processes like heating, cooling, condensation, and evaporation with finesse. Their performance is pivotal, directly impacting the efficiency, reliability, and longevity of the heat exchanger.
Application of heat exchanger tubes in different industries
1. Chemical industry: In the realm of chemical production, heat exchanger tubes are essential for heating reaction materials, cooling end products, and recovering waste heat, thus considerably boosting energy efficiency.
2. Petroleum industry: During petroleum refining, these tubes play a crucial role in heating crude oil, separating products, and streamlining various processes, ensuring a smooth production flow.
3. Power industry: Within power plants, heat exchanger tubes are vital for heating and cooling fluids, fulfilling specific requirements for efficient power production.
4. Food industry: In the dynamic field of food processing, heat exchanger tubes are indispensable for heating and cooling ingredients and products, maintaining precise temperature control 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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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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