Seamless Cold Drawn High Pressure Fuel Injection Tube

Instruction

ASTM A192 Seamless Cold Drawn High Pressure Boilers Carbon Steel Heat Exchanger Tubes Applications:
For Boilers,Superheaters,
Heat-Exchangers,
High-pressure Boilers,
Steam Boilers
Cold Condensers  and High-Pressure Services,
High-Temperature Services for Boiler Constructions

Cold Drawn Tube Size range:
O.D.:12.7-168mm    
W.T.: 1.0-15mm     
L: according to customer requirement  max 32000mm
 
Seamless Tube Manufacture Method for Carbon Steel Heat Exchanger Tubes:
Tubes are manufactured by seamless process and both hot finished and cold finished are applicable.
 
Carbon Steel Heat Exchanger Tubes Heat treatment:
Hot finished tubes need not be heat treated.
Cold Finished tubes are heat treated after the final cold finishing pass at a temperature of 1200℉(650℃) or higher

Steel Grade and Chemical Compositions:

C	0.06-0.18
Mn	0.27-0.63
P	≤0.035
S	≤0.035
Si	≤0.25

Mechanical Properties
Tensile Strength:   min ksi[Mpa]  47[325]     
Yield Point:            min ksi[Mpa] 26[180]     
Elongation:           ≥35%

Hardness

Brinell Hardness	Rockwell Hardness Number
WT≥0.200in(5.1mm)	WT＜0.200in(5.1mm)
137HRB	77HRB

 

Tolerance for OD and WT(SA-450/SA-450M)
OD in(mm)	+	-	WT in(mm)	+	-
＜1''(25.4)	0.1	0.1	≤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	0.2	0.2
2''～＜2.1/2''(50.8～63.5)	0.25	0.25
2.1/2''～＜3''(63.5～76.2)	0.3	0.3
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

Mechanical Testing:
Flattening Test
Flaring Test
Flange Test
Hardness Test
Hydrostatic Test

Reference Documents:
ASTM A450/A 450M   Sepcification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
 
ASTM A520    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.