ASTM A178 Round Welded Carbon Steel Heat Exchanger Tubes

Price Negotiable

Price: usd 500-1200 per ton

MOQ: 5 tons

Delivery Time: 30-45 days

Brand: TORICH

Product Description

ASTM A178 Round Welded Carbon Steel Heat Exchanger Tubes

Material: Carbon steel and carbon manganese steel

Production: Electric Resistance Welding

Size range: O.D.: 12.7-127mm W.T.:0.9-9.1mm L: according to customer requirement

Applications: For Boilers, Superheaters, Heat-Exchangers, Condensers, Boiler flues, Superheater flues and e ends

Heat treatment:
After welding, all tubes are heat treated at a temperature of 1650℉ (900℃) or higher and followed by cooling in air or in the cooling chamber of a controlled atmosphere furnace.
Cold-Drawn tubes are heat treated after the final cold-draw pass at a temperature of 1200℉(650℃)or higher.

Tests and Inspection:
Tensile Test
Crush Test

Mechanical Test
- Flattening Test
- Flange Test

Chemical Properties

Element	Grade A,Low-Cabon Steel	Grade C,Medium-Carbon Steel		Grade D, Carbon-Manganese Steel
Carbon	0.06-0.18	0.35 Max		0.27Max
Manganese	0.27-0.63	0.80Max		1.00-1.50
Phosphorus,Max	0.035	0.035		0.030
Sulfur,Max	0.035	0.035		0.015
Silicon	-	-		0.10 min
Mechanical Properties	Grade A	Grade C	Grade D
Tensile Strength:min ksi(Mpa)	47(325)	60(415)	70(485)
Yield Point:min ksi(Mpa)	26(180)	37(255)	40(275)
Elongation	≥35%	≥30%	≥30%

Tolerance for OD and WT(SA-450/SA-450M)

OD in(mm)	+	-	WT in(mm)	+	-
<1''(25.4)	0.10	0.10	≤1.1/2''(38.1)	20%	0
1''~1.1''(25.4~38.1)	0.15	0.15	>1.1/2''(38.2)	22%	0
>1.1/2''~<2''(38.1~50.8	0.20	0.20
2''~<2.1/2''(50.8~63.5)	0.25	0.25
2.1/2''~<3''(63.5~76.2)	0.30	0.30
3''~<4''(76.2~101.6)	0.38	0.38
4''~<7.1/2''(101.6~190.5)	0.38	0.64
>7.1/2~9''(190.5~228.6)	0.38	1.14