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  • Torich International Co.,Ltd--The Steel Tube Maker

  •  [Zhejiang,China]
  • Business Type:Distributor/Wholesaler , Manufacturer , Service , Trade Company
  • Main Mark: Africa , Americas , Asia , Caribbean , East Europe , Europe , Middle East , North Europe , Oceania , Other Markets , West Europe , Worldwide
  • Exporter:31% - 40%
  • Certs:GB, ISO9001, ISO14001
  • Description:Cold-Drawn Carbon,Feedwater Heater,A 556 / 556M
Torich International Co.,Ltd--The Steel Tube Maker Cold-Drawn Carbon,Feedwater Heater,A 556 / 556M
Home > Products > Profile Steel Tubes > Cold-Drawn Carbon Feedwater Heater Seamless steel Tubes

Cold-Drawn Carbon Feedwater Heater Seamless steel Tubes

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    Payment Type: L/C,T/T
    Delivery Time: 45 Days

Basic Info

Model No.: A 556 / 556M

Type: Seamless

Application: Oil Pipe, Boiler Pipe

Section Shape: Special

Surface Treatment: Black

Usage: Machinery Industry

Technique: Cold Drawn

Material: Carbon Steel

Additional Info

Packaging: In wooden

Productivity: 3000ton per month

Brand: Torich

Transportation: Ocean

Place of Origin: china

Supply Ability: 10000ton per year

Certificate: ISO9001

Port: Shanghai,Ningbo

Product Description

A 556/A 556M Cold-Drawn Carbon Feedwater Heater seamless steel tubes

China leading manufacturers and suppliers of Special Pipes, and we are specialize in Engineering Special Steel,Elliptical Steel Tube,Triangle Steel Tube, Profile Steel Tube,Profile Steel Pipe,etc.

1. Referenced Documents
1.1 ASTM Standards:
A 450/A 450M Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes E 30 Test Methods for Chemical Analysis of Steel, Cast Iron, Open-Hearth Iron, and Wrought Iron


2. Manufacture

2.1 Manufacture-Tubes shall be made by the seamless process and shall be cold drawn.

2.2 Heat Treatment:
2.2.1 Cold-drawn tubes shall be heat treated after the final cold-draw pass at a temperature of 1200°[640°C] or higher to ensure ductility satisfactory for rolling into tube sheets and to meet mechanical properties as specified.
2.2.2 If stress-relief anneal of the U-bends is specified, the anneal shall consist of heating the bent portion within a range of 1100 to 1200°F [585 to 640°C].


3. Chemical Composition
3.1 The steel shall conform to one of the requirements as to chemical composition as prescribed in Table 1. 3.2 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 Chemical Requirements
Element Composition, %

Grade A2 Grade B2 Grade c2
Carbon, max 0.18 0.27 0.3
Manganese 0.27-0.63 0.29-0.93 0.29-1.06
Phosphorus 0.035 0.035 0.035
Sulfur, max 0.035 0.035 0.035
Silicon, min ... 0.10 0.10


4. Permissible Variations in Dimensions (Fig. 1)
4.1 Permissible variations from the specified outside diametershall not exceed 0.004 in. [0.10 mm] for tubing under1.0-in. [25.4-mm] outside diameter nor 0.006 in. [0.15 mm]for tubing 1.0 in. [25.4 mm] to 1.25 in. [31.7 mm] inclusive.These tolerances do not apply to the bent portion of theU-tubes. At the bent portion of a U-tube for R = 2 D orgreater neither the major nor minor diameter of tube shalldeviate from nominal by more than 10 %. If 1 ⁄ D is specified,tolerances could be greater.
4.2 Permissible variations from the specified minimum wallthickness shall not exceed +20 % or −0. The wall thickness of

TABLE 2 Tensile Requirements

Grade A2 Grade B2 Grade C2
Tensile strength, min, ksi [MPa] 47[320] 60[410] 70[480]
Yield strength, min, ksi [MPa] 26[180] 37[260] 40[280]
Elongation in 2 in. or 50 mm,
min, % (longitudinal)
35 30 30



TABLE 3 Hardness Requirements
Grade A2 HR B 72
Grade B2 HR B 79
Grade C2 HR B 89


the tube in U-bent section shall be not less than valuedetermined by:
tf T 2R / 2R D (1)
where:
t = wall thickness after bending, in. [mm],
T = specified minimum tube wall thickness, in. [mm],
R = centerline bend radius, in. [mm], and
D = nominal outside tube diameter, in. [mm].


Looking for ideal Cold-Drawn Carbon Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Feedwater Heater are quality guaranteed. We are China Origin Factory of A 556 / 556M. If you have any question, please feel free to contact us.

Product Categories : Profile Steel Tubes

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  • Cold-Drawn Carbon  Feedwater Heater Seamless steel Tubes
  • Cold-Drawn Carbon  Feedwater Heater Seamless steel Tubes
  • Cold-Drawn Carbon  Feedwater Heater Seamless steel Tubes
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