| Customization: | Available |
|---|---|
| After-sales Service: | Support |
| Warranty: | 1 Year |
|
Still deciding? Get samples of $ !
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
The ASTM A179 standard is meticulously tailored for seamless, cold-drawn, low-carbon steel pipes. These are indispensable in crafting heat exchangers, condensers, and similar heat transfer marvels. Renowned for their minimal wall thickness, they excel in applications requiring tubular heat exchangers, condensers, and other sophisticated heat transfer apparatus.
ASTM A179 standard steel pipes are celebrated for their superb heat transfer capabilities, robust mechanical strength, and exceptional resistance to corrosion. Their versatility makes them a staple in industries such as petroleum, chemical, pharmaceutical, food, and light industry, as well as in machinery and instrumentation, primarily for use in heat exchangers and condensers.
A heat exchanger is a masterful device engineered to transfer heat from a hot fluid to a cooler one, defining the essence of thermal management across various industries. From chemical and petroleum sectors to power and food industries, heat exchangers are pivotal, functioning as heaters, coolers, condensers, evaporators, and reboilers, thereby amplifying the efficiency of chemical production processes.
The heat exchange tube is the heart of a heat exchanger, strategically placed within the cylinder to facilitate efficient thermal interaction between two media. With its high thermal conductivity and isothermal properties, it ensures the swift transfer of thermal energy, establishing itself as an essential component in thermal management.
Primarily, heat exchanger tubes are engineered to effectuate heat transfer between multiple fluids at varying temperatures. This pivotal function aids in executing essential processes such as heating, cooling, condensation, and evaporation. The efficiency, reliability, and longevity of a heat exchanger hinge significantly on the performance of these tubes.
Application of heat exchanger tubes in different industries
1. Chemical industry: Within chemical manufacturing, heat exchanger tubes are vital in heating, cooling, and waste heat recovery processes, markedly boosting energy efficiency and process efficacy.
2. Petroleum industry: During petroleum refining, heat exchanger tubes are indispensable for heating crude oil and facilitating product separation, ensuring seamless and effective production operations.
3. Power industry: In the power sector, especially in power plant boilers, heat exchanger tubes are crucial for the regulation of fluid temperatures, catering to the precise demands of power generation.
4. Food industry: These tubes play a crucial role in the food industry by heating and cooling food ingredients and products, thereby ensuring optimal temperature control and consistency during processing.
|
Permissible Variations in Outside Diameter
|
||
|
Outside Diameter
|
Permissible Variations, in. [mm]
|
|
| in. [mm] | over | under |
|
Hot-Finished Seamless Tubes
|
||
| 4[101.6] and under | 1/64[0.4] | 1/32[0.8] |
|
Welded Tubes and Cold-Finished Seamless Tubes
|
||
| 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]
|
0.008 [0.2] |
| 2 to 21/2 [50.8 to 63.5],excl |
0.010 [0.25]
|
0.010 [0.25] |
| 21/2 to 3[63.5 to 76.2],excl |
0.012 [0.3]
|
0.012 [0.3] |
|
Permissible Variations in Wall Thickness
|
||||||||
|
Outside
Diameter,
in. [mm]
|
Wall Thickness, %
|
|||||||
|
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
|
Over
0.180[4.6]
|
|||||
|
Over
|
Under
|
Over
|
Under
|
Over
|
Under
|
Over
|
Under
|
|
|
Seamless, Hot-Finished Tubes
|
||||||||
|
4 [101.6] and under
|
40 | 0 | 35 | 0 | 33 | 0 | 28 | 0 |
|
Seamless, Cold-Finished Tubes
|
||||||||
| over | under | |||||||
|
11/2[38.1] and under
|
20 | 0 | ||||||
| over 11/2[38.1] | 22 | 0 | ||||||
|
Welded Tubes
|
||||||||
|
All sizes
|
18 | 0 | ||||||
|
Permissible Variations in Weight Per Foot
|
||
|
Method of Manufacture
|
Permissible Variation in Weight
per Foot, %
|
|
|
Over
|
Under
|
|
|
Seamless, hot-finished
|
16 | 0 |
|
Seamless, cold-finished:
|
||
|
11/2 in. [38.1 mm] and under OD
|
12 | 0 |
|
Over 11/2 in. [38.1 mm] OD
|
13 | 0 |
|
Welded
|
10 | 0 |
|
Chemical Composition
|
|
|
Carbon, %
|
0.06-0.18
|
|
Manganese, %
|
0.27-0.63
|
|
Phosphorus, max, %
|
0.035
|
|
Sulfur, max, %
|
0.035
|
|
tensile properties
|
|
|
Tensile strength, min, ksi [MPa]
|
47 [325]
|
|
Yield strength, min, ksi [MPa]
|
26 [180]
|
|
Elongation in 2 in. or 50 mm, min, %
|
35 |
|
Hardness Requirements
|
|
| Hardness,max,HRB | 72 |
|
Mechanical Tests Required
|
|
|
Flattening Test
|
Extract 2 pcs from each batch and collect one specimen each for testing |
|
Flaring Test
|
Extract 2 pcs from each batch and collect one specimen each for testing |
|
Flange Test
|
Extract 2 pcs from each batch and collect one specimen each for testing |
|
Hydrostatic Test
|
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.
){kind=link}