U Bend Astm A556 Feedwater Heater Tubes - China

ASTM A556/A556M Standard Specification for Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes 1 - ASTM A556/A556M Scope

1.1 This specification 2 covers minimum-wall-thickness, seamless cold-drawn carbon steel tubes including bending into the form of U-tubes, if specified, for use in tubular feedwater heaters.

1.2 The tubing sizes covered shall be 5/8 to 1 1/4 -in.

[15.9mm to 31.8mm] outside diameter, inclusive, with minimum wall thicknesses equal to or greater than 0.045 in.

[1.1mm].

1.3 Optional supplementary requirements are provided, and when desired, shall be stated in the order.

1.4 The values stated in either inch-pound units or SI units are to be regarded separately as the standard.

Within the text, the SI units are shown in brackets.

The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.

Combining values from the two systems may result in nonconformance with the specification.

The inch-pound units shall apply unless the "M" designation of this specification is specified in the order.

2 - ASTM A556/A556M Chemical Composition

2.1 The steel shall conform to one of the requirements as to chemical composition as prescribed in Table 1 - 2.2 When a grade is ordered under this specification, supplying an alloy grade that specifically requires the addition of any element other than those listed for the ordered grade in Table 1 is not permitted.

3 - ASTM A556/A556M Mechanical Properties

3.1 Tensile Properties—The material shall conform to the requirements as to tensile properties prescribed in Table 2 when pulled in the full section.

3.2 Hardness Requirements—The tubes shall not exceed the Rockwell Hardness shown in Table 3 - 4 - ASTM A556/A556M Workmanship, Finish, and Appearance

4.1 Finished tubes shall be free from scale but may have a superficial oxide film on the surfaces.

Alight oxide scale on the outside and inside surfaces of the U-bend shall be allowed for tubes that have been heating treated.

4.2 Finished tubes shall be reasonably straight and have smooth ends free from burrs.

Tubes shall have a workmanlike finish and shall be free of surface imperfections that cannot be removed within the allowable wall tolerances.

Removal of surface imperfections such as handling marks, straightening marks, light mandrel and die marks, shallow pits, and scale patterns will not be required provided they are within the allowable wall tolerances.

4.3 Finished tubes shall be coated both on the outside and the inside diameter to prevent corrosion in transit.

The type of coating applied should be mutually agreed upon and specified in the order.

Company Contact:

• Posted By: Shanghai T.S. Industrial Co.,Ltd

• Phone: 8615607960723

• Address: No.2, Lane 1588 Youyi Road, Shanghai , China

• Email:

• Website: https://www.lordfintube.com

• Business Description: Shanghai T.S. Industrial Co., Ltd focuses on Finned Tubes, Fin Tube, and Finned Pipe used in Heat Exchangers, Boiler Economizers, Coolers, and Heaters.
  
  We supply custom fin tubes and finned pipes in various material configurations that will increase the heat exchangers' heat transfer rate and reduce operating costs.
  
  With an advanced high-frequency resistance welding finned tube production line, an annual production capacity of up to 4000 tons, the specifications of phi 22-273mm finned tube, according to national standards or customer requirements standard production.
  
  The company produces finned tubes (square fin tube, circular finned tube, spiral fin tube, H type finned tube, longitudinal fin tube, corrugated fin tube, spiral serrated fin tube, needle-shaped fin tube, plate-shaped fin tube, inner fin tube) that can be applied to the boiler, air preheater, etc.
  
  Fin tubes or called finned tubes are a major component for various heat recovery systems.
  
  The close connection between the Finning operation and the manufacturing plant allows significant savings in packaging and freight as well as working capital reduction as a result of a “just-in-time” supply chain.
  
  T.S. Industrial Supply and produce to custom requirement finned tubes.
  
  For high-frequency resistance welding finned tube.
  
  The fin, either solid or serrated, in carbon, alloy, or stainless steel is helically wound around the tube and resistance welded.
  
  For Extruded Finned Tube, the Base tube can be carbon steel, alloy Tube, and stainless steel, while the fin can be aluminum and copper alloy.
  
  Typical product, we also produce extruded serrated finned tubes.
  
  For Bending, We can be on the bare tube and also can be over the fin, is performed on-site with custom-designed duplex benders.
  
  In our typical finned tube supply range, we supply both extruded fin tubes and helical welded finned tubes, which are mainly used for the heat transfer industry.
  
  Specific types such as Embedded Fin Tube also called G Type Fin Tube, L Fin Tube, LL Finned Tube, KL Finned Type also call knurled Finned Tube, Extruded Fin Tubes, Extruded Serrated Fin Tube, Square Fin Pipe also call H Fin Tube, Rectangular Fin Pipes also called Double H Fin Tube, Longitudinal Finned Tubes, Studded Tube and Nailhead Pipe, High-Frequency Welded Serrated Fin Tube, High-Frequency Welded Solid Fin Tube.
  
  T.S. Industrial privately owned company and finned tube manufacturer.
  
  We are not owned by, nor do we own, any steel producers.
  
  Our independence from steel producers ensures that we are objective in matching exact customer needs in terms of quality, specifications, and delivery.
  
  T.
  
  S Industrial provides finned pipes products and services to the power plants, petrochemical industries, boiler & heat exchangers, nuclear stations, paper, shipbuilding sectors as well as refrigerating industries.
  
  Incorporated with manufacturers and fabricators in China, we can supply in accordance with most international standards with high-qualified and cost-effective products.
  
  Our main strength lies in the heat exchanger tubular, especially finned tubes, which can be long up to twenty meters, and usually delivered in U-bent form.
  
  We are confident that our expertise in this field will bring you high-value-added products & services, and we are ready anytime to team up with your finned tube solutions.