ASTM A556, ASME SA 556 is a common standard specification for seamless cold-drawn carbon steel tubes for the boiler system and feedwater heater. It covers minimum-wall-thickness, seamless cold-drawn carbon steel tubes including bending into the form of U-tubes. It’s 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, in which B2 and C2 are commonly used. Grade C2 provides higher strength and more heat-resistant.

• Specification: ASTM A556 C2
• Outside Diameter: 20mm-31.8mm
• Wall Thickness::1.1mm-35mm
• Length: 3m-12m
• Delivery Condition: NBK, Bright, U bending

ASTM A556 C2 Pipe Chemistry Composition

Grade	C	Si	Mn	P	S
C2	0.30 max	0.10 min	0.29-1.06	0.030 max	0.030 max

ASTM A556 C2 Pipe Mechanical Properties

Grade	Tensile Strength MPa	Yield Strength MPa	Elongation	Hardness HRB
C2	480 min	280 min	35	89 min

ASTM A556, ASME SA 556 steel pipe is mainly for a high-temperature heater system. WLD steel supplies carbon ASTM A556 Grade C2 seamless steel tubes manufactured in cold drawn process and equivalent material for boiler and economizer, heater, superheater and reheater system in various sizes and specifications. If you are looking for this material, please contact us or get a quotation. Not only do we have all kinds of sizes, but we also have all kinds of sizes that are hard to find.