we have obtained ISO 9001, ISO 14001, ISO 45001, CE, AAA-level credit rating certification, etc.
we have obtained ISO 9001, ISO 14001, ISO 45001, CE, AAA-level credit rating certification, etc.
Carbon Steel SA 178 Boiler Tube is general carbon steel supplied in the normalized condition. This alloy is processed from tempered, normalized and annealing process. These boilers are epitomized by having modest strength and impact toughness. These boilers are used where high-temperature services are required. These boilers are formed with between the temperatures 900 – 1200 degree C. The saturated times should be kept lower that prevents scaling. Moreover, time and temperature should be controlled.
These boilers have very good machinability; this reduces its machining costs. This alloy is resistive to corrosion in mild conditions. Moreover, these are resistive to pitting, crevice and stress corrosion cracking. These offer the best performance in elevated temperatures.
|
Product |
Seamless Steel Pipe |
ERW pipe |
SSAW pipe |
Casing and Tubing |
|
|
O.D |
13.72-914.4mm |
21.3-660mm |
406-1626mm |
219-3500mm |
Casing Size: 4-1/2' - 20' (114.3 mm - 508 mm) |
|
W.T |
1.25-50mm |
1-20mm |
6-60mm |
5-26mm |
0.205' - 0.635 mm; Length: R1 (4.88 m - 7.62 m), R2(7.62 m - 10.36 m), R3 (10.36 m - longer) |
|
Unit Length |
5.8/6/11.8/12m..etc |
5.8/6/11.8/12m..etc |
5.8/6/11.8/12m..etc |
5.8/6/11.8/12m..etc |
|
|
Material |
GR.B, X42, X46, X52, S355JOH, S355J2H, St 44.0, P265GH, P235GH, P265TR1 |
GR.B, St 37, St 52, S235, X42, X46, X52, X56, X60, X65, X70 |
GR.B, St 37, St 52, S235, S355JRH, X42, X46, X52, X56, X60 |
GR.B, St 37, St 52, S235, X42, X46, X52, X56, X60, X65, X70 |
H40, J55, K55, N80, C75, L80, C90, T95, Q125 |
|
Usage |
Chilled Water Pipe, Drinking water Pipe, Waste Water Pipe, Structural Tube, Fluid Pipe, Boiler Pipe, Oil and Gas Transportation Pipe, Mechanical Structure Pipe. |
Low Pressure Liquid Delivery, such as water, gas and oil. |
Low Pressure Liquid Delivery, such as water, gas and oil. |
Low Pressure Liquid Delivery, such as water, gas and oil. |
Conveying gas, water, oil, natural gas |
|
Outside Diameter tolerance |
Wall thickness tolerance |
||
|
OD < 50 |
±0.05mm |
S < 4mm |
±12.5% |
|
OD > 50 |
±1% |
4–20mm |
+15/-12.5% |
|
|
|
S≥20mm |
±12.5% |
Chemical Requirements
|
Element |
Composition, % |
||
|
Grade A, |
Grade C, |
Grade D, |
|
|
Carbon |
0.06-0.18 |
0.35 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 |
Mechanical Properties
|
|
Grade A |
Grade C |
Grade D |
|
Tensile strength, min, ksi [MPa] |
47[325] |
60[415] |
70[485] |
|
Yield strength, min, ksi [MPa] |
26[180] |
37[255] |
40[275] |
|
Elongation in 2 in. or 50mm, min, % |
35 |
30 |
30 |
|
For longitudinal strip tests a deduction for |
1.50A |
1.50A |
1.50A |
|
Each1⁄32-in[0.8mm] decrease in wall thickness below 5⁄16in. [8mm] |
|
|
|
|
From the basic minimum elongation of the following percentage points shall be made |
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