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ASME SA-178 / SA-178M Erw Carbon Steel Pipe

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ASME SA-178 / SA-178M Erw Carbon Steel Pipe

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Brand Name :	New Era
Model Number :	ASME SA-178/SA178M
Certification :	ISO9001
Price :	Negotiation
Payment Terms :	T/T
Supply Ability :	3000 tons/month
Delivery Time :	45 days

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ASME SA-178 / SA-178M Erw Carbon Steel Pipe

ASME SA-178/SA-178M ELECTRIC-RESISTANCEWELDED CARBON STEEL AND CARBON-MANGANESE

STEEL BOILER AND SUPERHEATER TUBES

The SA178 ERW pipes including Steel Grade A,C,D

1.This specification covers minimum-wallthickness,electric-resistance-welded tubes made of carbon
steel and carbon-manganese steel intended for use as boiler tubes, boiler flues, superheater flues, and
safe ends.

2.The tubing sizes and thicknesses usually furnished to this specification are 1⁄2 to 5 in. [12.7 to 127 mm]
in outside diameter and 0.035 to 0.320 in. [0.9 to 9.1mm], inclusive, in minimum wall thickness. Tubing
having other dimensions may be furnished, providedsuch tubes comply with all other requirements of this
specification.

3.Reference ASTM Standards:

A 226/A 226M Specification for Electric-Resistance-Welded Carbon Steel Boiler and Superheater Tubes
for High-Pressure Service
A 450/A 450M Specification for General Requirementsfor Carbon, Ferritic Alloy, and Austenitic Alloy Steel
Tubes
A 520 Specification for Supplementary Requirements for Seamless and Electric-Resistance-Welded Carbon
Steel Tubular Products for High-Temperature Service Conforming to ISO Recommendations for Boiler Construction.
E 213 Practice for Ultrasonic Examination of Metal Pipe and Tubing
E 273 Practice for Ultrasonic Examination of Longitudinal Welded Pipe and Tubing

A 450/A450M Test report required (Certification Section of Specification A 450/A 450M)

4.The steel for Grade D shall be killed.
5.Tubes shall be made by electric-resistance welding tubes/ERW tubing

6.The ERW metal tubes including steel grade A.C,D

7.After welding, all tubes shall be heat treated at a temperature of 1650°F [900°C] or higher and followed
by cooling in air or in the cooling chamber of a controlled-atmosphere furnace. Cold-drawn tubes shall
be heat treated after the final cold-draw pass at a temperature of 1200° [650°C] or higher.
8.Steel round tubing/ERW tubes Chemical Requirements:

Element	Grade A low-Carbon Steel	Grade C Medium-Carbon Steel	Grade D Carbon-Manganese Steel
Carbon	0.06-0.18	0.035 max	0.27 max
Manganese	0.27-0.63	0.80 max	1.00-1.50
Phosphorus, max	0.035	0.035	0.030
Sulfur, max	0.035	0.035	0.015
Silicon	...	...	0.10 min

9.The Steel tubing Tensile Requirements:

	Grade C	Grade D
Tensile Strength, min, ksi [MPa]	60 [415]	70 [485]
Yield Strength, min, ksi [MPa]	37 [255]	40 [275]
Elongation in 2 in. or 50mm, min, %	30	30

10.ERW Steel tubing Minimum Elongation Values:

Wall Thickness		Elongation in 2 in. or 50mm, min, %
in.	mm	Elongation in 2 in. or 50mm, min, %
5/16 (0.312)	8	30
9/32 (0.281)	7.2	29
1/4 (0.250)	6.4	27
7/32 (0.219)	5.6	26
3/16 (0.188)	4.8	24
5/32 (0.156)	4	22
1/8 (0.125)	3.2	21
3/32 (0.094)	2.4	20
1/16 (0.062)	1.6	18

11.The ERW round tubes/tubing with U-Bending tubes pictures :

Tags:SA178 welded tubes,,air heater tubes,Electric resistance tubes,heater tubes;welded pipes;

Welded tubing; A178/A178M;boiler tube; resistance welded steel tube; Carbon steel tube; welded steel tube

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