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Executive Standard: SA299 Gr. B steel plates comply with the ASME standard, specifically ASTM A299/A299M.2026-08-26
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SA299 is a carbon-manganese-silicon steel plate designed for pressure vessels—often referred to as "gas drum steel" under US standards.2026-08-19
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ntroduction to SA299 Gr.A Steel Plate:
SA299 Gr.A is a steel plate grade designated for boilers and pressure vessels under American standards.2026-08-11 -
A285 Gr.C and SA285 Gr.C steel plates represent the same grade, though they are governed by different standards.2026-08-04
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SA283 Gr.B is a low-to-medium strength carbon structural steel plate conforming to the American Society of Mechanical Engineers (ASME) standard.2026-07-31
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a387 grade 12 class 1 steel plate,a387 grade 12 class 1 steel plate supplier
a387 grade 12 class 1 steel plate is a kind of Cr-Mo-alloy steel, a387 grade 12 class 1 steel is designed for use in pressure vessels and heat exchangers where there is an elevated temperature. It is described as an alloyed high temperature pressure vessel steel.
a387 grade 12 class 1 steel plate specification:
Grade: a387 grade 12 class 1 Standard: ASTM A-387/A-387M
Length: 6000mm-12500mm, Thickness: 5mm -150mm, Wide: 1500mm-4500mm
a387 grade 12 class 1 steel equivalent material: UK 621gr.A,B
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a387 grade 12 class 1 steel chemical composition |
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Grade |
The Element Max (%) |
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|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
|
|
a387 grade 12 class 1 |
0.04-0.17 |
0.13-0.45 |
0.35-0.73 |
0.035 |
0.035 |
0.74-1.21 |
0.40-0.65 |
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
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Grade |
||||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
a387 grade 12 class 1 |
mm |
Min Mpa |
Mpa |
Min % |
|
t≦50 |
230 |
380-550 |
22 |
|
|
50<t≦200 |
- |
- |
18 |
|
a387 grade 12 class 1 steel plate application:
a387 grade 12 class 1 steel plate is widely used in pressure vessel, boiler, storage tanks and heat exchanger in oil, gas project.
a387 grade 12 class 1 steel additional condition :
UT (Ultrasonic examination), AR(As Hot Rolled only), TMCP(Thermal Mechanical Control Processing), N(Normalized), Q+T(Quenched and Tempered), Z Direction Test(Z15, Z25, Z35), Charpy V-Notch Impact Test, HIC test, NDT, PWHT( Simulated Post Weld Heat Treatment), NACE0175, The Third Party Test (Such as SGS Test), Coated or Shot Blasting and Painting.
As a professional a387 grade 12 class 1 steel plate supplier in China, we keep more than 1000 tons A516 Grade60 steel in stock every month , any need in a387 grade 12 class 1 steel, please feel free to contact us!