ASME SA-556m Grade C2 Heat Exchanger Tubes Seamless Cold-Drawn U Tube

• Customization: Available
• Type: Seamless
• Technique: Cold Drawn
• Model NO.: MD-8101651
• Material: Carbon Steel
• Surface Treatment: Oiled
• Usage: Boiler Pipe, Feedwater Heater Tube
• Section Shape: Round
• Size: Od 6mm-530mm Wt: 1.00mm-20mm
• Length: 4000-20000mm
• Material Grade: A2,B2,C2
• Cetificate: ISO
• Package: Standard Export Package
• Payment Term: L/C T/T
• Delivery Time: 15-20 Days Ex.Mill
• Transport Package: in Bundles or Standard Export Seaworthy Packing
• Specification: 1/2′′-42′′
• Trademark: kingmetal
• Origin: China (Mainland)
• Production Capacity: 20000 Ton/Tons / Month

Product Description

ASME SA-556M Grade C2 Heat exchanger tubes Seamless Cold-Drawn U Tube

ASTM A556, ASME SA 556 is a common standard specification for seamless cold-drawn carbon steel feedwater heater tubes. It covers minimum-wall-thickness, seamless cold-drawn carbon steel tubes including bending into the form of U-tubes. In order to increase the heating area and prevent heat from being taken away by cooling water in the condenser,  the U-bending design is essential. The steel pipe is used for making a water cooling wall of the power plant boiler, it can effectively eliminate the steam film on the inner wall of the steel tube and improve the thermal efficiency of the furnace wall. There are three grades for this specification: Grade A2, B2, C2, and among them, B2 and C2 are commonly used.

 

Manufacture:Seamless process

Outer diameter: 12.7mm-38.1mm

Wall thickness: 0.5mm-3.0mm

Ends: Plain End, Beveled End, Treaded

 

Additional Info

Port of Shipment: Tianjin/shanghai, China

Payment Terms:T / T, LC

Delivery: 7-15 days after payment

Surface: Tubes will be varnished to prevent rust.

Marking: Standard + Steel Grade + Size + Heat No + Lot No

Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden) or as required

 

Technical standard requirements

 

Chemical composition of  SA-556M Grade C2 steel tubes

Grade	C	Si	Mn	P	S
SA-556M C2	≤0.30	≥0.10	0.29-1.06	≤0.035	≤0.035

 

Mechanical properties of SA-556M Grade C2 steel tubes

Mechanical properties	Grade C2
Tensile strength, min, ksi [MPa]	70 [480]
Yield strength, min, ksi [MPa]	40 [280]
Elongation in 2 in. or 50 mm, min, % (longitudinal)	30
Hardness	HR B 89

 

 

Manufacture

SA-556M Grade C2 Tubes shall be made by the seamless process and shall be cold drawn.

 

Heat Treatment:

Cold-drawn tubes shall be heat treated after the final cold-draw pass at a temperature of 1200°F [640°C] or higher to ensure ductility satisfactory for rolling into tube sheets and to meet mechanical properties as specified.

 

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].

 

 

 

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