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Nice Quality And Competitive Price Astm A178 4 - 450mm Outside Diameter Heat Exchanger Carbon Steel Welded Pipe

Categories Welded Steel Tube
Brand Name: TORICH
Model Number: ASTMA178
Certification: ISO9001 ISO14001
Place of Origin: China
MOQ: 5
Price: 800-1200USD/Tons
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Delivery Time: 30days
Packaging Details: In Wooden boxes
Keyword: Heat-exchanger Tube
Materail: Q235
OD: 4-450mm
WT: 0.5-50mm
length: 1-12m
Shape: Round
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Nice Quality And Competitive Price Astm A178 4 - 450mm Outside Diameter Heat Exchanger Carbon Steel Welded Pipe


Applications: for Boilers,Superheaters, Heat-Exchangers, Condensers, Boiler flues, superheater flues and e ends


Material: Carbon Steel and carbon manganese steel


Production: Electric Resistance Welding


Size range: O.D.:6-127mm W.T.:0.9-9.1mm L: according to customer requirement


Mechanical PropertiesGrade AGrade CGrade D
Tensil Strength: min ksi[Mpa]47[325]47[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)0.100.10≤1.1/2''(38.1)20%0
1''~1.1''(25.4~38.1)0.150.15>1.1/2''(38.2)22%0
>1.1/2''~<2''(38.1~50.80.200.20
2''~<2.1/2''(50.8~63.5)0.250.25
2.1/2''~<3''(63.5~76.2)0.300.30
3''~<4''(76.2~101.6)0.380.38
4''~<7.1/2''(101.6~190.5)0.380.64
>7.1/2~9''(190.5~228.6)0.381.14

Heat Treatment

After welding , all tubes shall be heat treated at a temperature of 1650ºF (900ºC) or higher and followed by cooling in air or in the cooling chamber of a controlled atmosphere furnace.


Chemical Composition

Carbon , max% 0.18

Manganese, % 0.27-0.63

Phosphorus max% 0.035

Sulfur, max% 0.035

Hardness Requirement

The tubes shall have a hardness number not exceeding 72 HRB


Mechanical Tests Required


1.Flattening Test


2.Flange Test


3.Reverse Test


4.Hardness Test


5.Hydrostatic or Nondestructive Electric Test

Chemical Requirements

ElementGradeT1GradeT1aGradeT1bGradeT2GradeT11GradeT12GradeT22
Carbon0.10-0.200.15-0.250.14max0.10-0.200.05-0.150.05-0.150.15max
Manganese0.30-0.800.30-0.800.30-0.800.30-0.610.30-0.600.30-0.610.30-0.60
Phosphorus,max0.0250.0250.0250.0250.0250.0300.025
Sulfur,max0.0250.0250.0250.0200.0200.0200.020
Silicon0.10-0.500.10-0.500.10-0.500.10-0.300.50-1.000.50max0.50max
Molybdenum0.44-0.650.44-0.650.44-0.650.44-0.650.44-0.650.44-0.650.87-1.13
Chromium---------0.50-0.811.00-1.500.80-1.251.90-2.60
Pneumatic Cylinder TubeHydraulic Cylilnder Tube

ID mm

OD mm

Thickness (mm)

Unitweigh
(kg/m)

ID mm

OD mm

Thickness (mm)

Unitweigh
(kg/m)
90100511.71506056.78
50636.59.06
100110512.9550657.510.63
50701014.8
125135516.03566657.52
607058.01
140152621.660736.510.66
60801017.26
150160519.1163766.511.14
63808.514.99
160170520.3463831018
657558.63
160172624.5665807.513.41
708059.25
180194732.2870836.512.26
7086815.39
200214735.7370901019.73
75907.515.26
200216841.0375951020.96
80936.513.87
2002199.549.0880957.516.18
801001022.19
250266850.9801021124.68
801081432.45
25027311.574.1685986.514.67
851007.517.11
3003201076.45851051023.43
90102614.2
3203401081.38901057.518.03
90108921.97
40042613132.4901101024.66
901141230.18

competitive Advantage:
100% good quality and price
The best service in steel field.. Including after-sales service
Reasonable price. We only illing to do business with sincere buyers.
We could produce this pipe according American standard.
We are also a manufacturer,so we can provide the products in conformity with your requirements
rapidly Our company has rich technical force and advanced production equipment and coordinated
advanced test equipment and method.


















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