ASTM A556 standard specifies the requirements for seamless carbon steel pipes for feedwater heaters. ASTM A556 is available in different grades such as A2, B2, and C2.
ASTM A556 alloy pipes are mainly used in boilers and petrochemical industries that need to withstand high temperatures, high pressures, and corrosive environments. They are an important part of heat exchangers.
GNEE is a professional manufacturer of A556 heat exchanger tubes, and also provides ASTM A556 C2 grade seamless U-bend steel pipes.
Chemical Components (%) of ASTM A556 Cold Drawn Tubes
| C % | P % | S % | |||
| A2 | 0.18 | ... | 0.27–0.63 | 0.035 | 0.035 |
| B2 | 0.27 max | 0.10 min | 0.29-0.93 | 0.030 max | 0.030 max |
| C2 | 0.30 max | 0.10 min | 0.29-1.06 | 0.030 max | 0.030 max |
Mechanical Properties of ASTM A556 Seamless Heater Tubes
| Elongation in 2 in. or 50 mm, min, % (longitudinal) | ||||
| A2 | 47 [320] | 26 [180] | 35 | HR B 72 |
| B2 | 60 [410] | 37 [260] | 30 | HR B 79 |
| C2 | 70 [480] | 40 [280] | 30 | HR B 89 |
ASTM A556 / A556M Standard Specification for Seamless Cold-Drawn Carbon Steel Feedwater Heater Tube.
Grades: ASTM A556 Grade A2, Grade B2, Grade C2
Outer Diameter: 12-40 mm
Wall Thickness: 1-4 mm
Length: Maximum Length 27 m
ASTM A556 Seamless Steel Tube
GNEE has passed ISO9001 quality system certification, obtained EU PED-97-23-EC certification in 2010, API 5L certification in 2012, and CPD-93/68/EEC certification in 2013.
GNEE has advanced testing equipment: X-ray flaw detection, ultrasonic flaw detection, hydrostatic pressure testing machine, tensile testing machine, metallographic analyzer, physical and chemical laboratory and complete inspection system. This ensures that the production and inspection of products meet standard requirements and meet customer needs.
Q.What is your after-sales service?
A.We provide after-sales service and 100% quality assurance for our products.
A.Delivery time is usually about 1 month, if we have stock, we can ship within 7 days.
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