Eltel Middle East, Syria ,
Standard for Structural Steel – Chinese Steel Specification
A) General General Information :- Standard Standard Specification for GB GB 700 700 – Chinese Select
Specification
Designation
Product Form
Alloy Group
G B 7 00 00 -8 -88
G ra ra de de Q1 95 95
b ar ar , p la la te te, s ttrr ip ip, s h ha a pe pe
ca arr b bo o n s tte e el el
G B 7 00 00 -8 -88
G ra ra de de Q2 15 15 A
b ar ar , p la la te te, s ttrr ip ip, s h ha a pe pe
G B 7 00 00 -8 -88
G ra ra de de Q2 15 15 B
G B 7 00 00 -8 -88
Title
Notes
ICS Number
Status
C ar ar b bo on St rru uc ttu u ra ra l Ste el el s
details
77.140.20
Current
ca arr b bo o n s tte e el el
C ar ar b bo on St rru uc ttu u ra ra l Ste el el s
details
77.140.20
Current
b ar ar , p la la te te, s ttrr ip ip, s h ha a pe pe
ca arr b bo o n s tte e el el
C ar ar b bo on St rru uc ttu u ra ra l Ste el el s
details
77.140.20
Current
G ra ra de de Q2 35 35 A
b ar ar , p la la te te, s ttrr ip ip, s h ha a pe pe
ca arr b bo o n s tte e el el
C ar ar b bo on St rru uc ttu u ra ra l Ste el el s
details
77.140.20
Current
G B 7 00 00 -8 -88
G ra ra de de Q2 35 35 B
b ar ar , p la la te te, s ttrr ip ip, s h ha a pe pe
ca arr b bo o n s tte e el el
C ar ar b bo on St rru uc ttu u ra ra l Ste el el s
details
77.140.20
Current
G B 7 00 00 -8 -88
Gr a ad d e Q2 35 35C
b ar ar , p la la te te, s ttrr ip ip, s h ha a pe pe
ca arr b bo o n s tte e el el
C ar ar b bo on St rru uc ttu u ra ra l Ste el el s
details
77.140.20
Current
G B 7 00 00 -8 -88
Gr a ad d e Q2 35 35D
b ar ar , p la la te te, s ttrr ip ip, s h ha a pe pe
ca arr b bo o n s tte e el el
C ar ar b bo on St rru uc ttu u ra ra l Ste el el s
details
77.140.20
Current
G B 7 00 00 -8 -88
G ra ra de de Q2 55 55 A
b ar ar , p la la te te, s ttrr ip ip, s h ha a pe pe
ca arr b bo o n s tte e el el
C ar ar b bo on St rru uc ttu u ra ra l Ste el el s
details
77.140.20
Current
G B 7 00 00 -8 -88
G ra ra de de Q2 55 55 B
b ar ar , p la la te te, s ttrr ip ip, s h ha a pe pe
ca arr b bo o n s tte e el el
C ar ar b bo on St rru uc ttu u ra ra l Ste el el s
details
77.140.20
Current
G B 7 00 00 -8 -88
G ra ra de de Q2 75 75
b ar ar , p la la te te, s ttrr ip ip, s h ha a pe pe
ca arr b bo o n s tte e el el
C ar ar b bo on St rru uc ttu u ra ra l Ste el el s
details
77.140.20
Current
B) Chemical Composition Spec Specif ific icat atio ion n
Desi Design gnat atio ion n
C
Mn
P
S
Si
Cr
Ni
Cu
N
As
Notes
GB 700-88
Grade Q195
0.06 - 0.12
0.25 - 0.50
0.045 max.
0.050 max.
0.30 max.
0.30 max.
0.30 max.
0.30 max.
0.008 max.
0.080 max.
details
GB 700-88
Grade Q215A
0.09 - 0.15
0.25 - 0.55
0.045 max.
0.050 max.
0.30 max.
0.30 max.
0.30 max.
0.30 max.
0.008 max.
0.080 max.
details
GB 700-88
Grade Q215B
0.09 - 0.15
0.25 - 0.55
0.045 max.
0.045 max.
0.30 max.
0.30 max.
0.30 max.
0.30 max.
0.008 max.
0.080 max.
details
GB 700-88
Grade Q235A
0.14 - 0.22
0.30 - 0.65
0.045 max.
0.050 max.
0.30 max.
0.30 max.
0.30 max.
0.30 max.
0.008 max.
0.080 max.
details
GB 700-88
Grade Q235B
0.12 - 0.20
0.30 - 0.70
0.045 max.
0.045 max.
0.30 max.
0.30 max.
0.30 max.
0.30 max.
0.008 max.
0.080 max.
details
GB 700 88
G d Q235C
0 18
0 35 0 80
0 040
0 040
0 30
0 30
0 30
0 30
0 008
0 080
details
Eltel Middle East, Syria ,
Standard for Structural Steel – Chinese Steel Specification
GB 700-88
Grade Q255A
0.18 - 0.28
0.40 - 0.70
0.045 max.
0.050 max.
0.30 max.
0.30 max.
0.30 max.
0.30 max.
0.008 max.
0.080 max.
details
GB 700-88
Grade Q255B
0.18 - 0.28
0.40 - 0.70
0.045 max.
0.045 max.
0.30 max.
0.30 max.
0.30 max.
0.30 max.
0.008 max.
0.080 max.
details
GB 700-88
Grade Q275
0.28 - 0.38
0.50 - 0.80
0.045 max.
0.050 max.
0.35 max.
0.30 max.
0.30 max.
0.30 max.
0.008 max.
0.080 max.
details
C) Mechanical Properties Specification Designation
Section Thickness / Diameter (mm) Yield Strength (MPa) Tensile Strength (MPa) % Elongation
GB 700-88
Grade Q195
t ≤16
GB 700-88
Grade Q195
16 < t ≤40
GB 700-88
Grade Q195
t > 40
GB 700-88
Grade Q215A
t ≤16
GB 700-88
Grade Q215A
GB 700-88
---
Heat Treatment
Notes
315 - 390
33 min.
hot-rolled, control-rolled, or normalized details
---
315 - 390
32 min.
hot-rolled, control-rolled, or normalized details
---
315 - 390
---
215 min.
335 - 410
31 min.
hot-rolled or control-rolled
details
16 < t ≤40
205 min.
335 - 410
30 min.
hot-rolled or control-rolled
details
Grade Q215A
40 < t ≤60
195 min.
335 - 410
29 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q215A
60 < t ≤100
185 min.
335 - 410
28 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q215A
100 < t ≤150
175 min.
335 - 410
27 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q215A
t > 150
165 min.
335 - 410
26 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q215B
t ≤16
215 min.
335 - 410
31 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q215B
16 < t ≤40
205 min.
335 - 410
30 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q215B
40 < t ≤60
195 min.
335 - 410
29 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q215B
60 < t ≤100
185 min.
335 - 410
28 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q215B
100 < t ≤150
175 min.
335 - 410
27 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q215B
t > 150
165 min.
335 - 410
26 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235A
t ≤16
235 min.
375 - 460
26 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q235A
16 < t ≤40
225 min.
375 - 460
25 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q235A
40 < t ≤60
215 min.
375 - 460
24 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q235A
60 < t ≤100
205 min.
375 - 460
23 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q235A
100 < t ≤150
195 min.
375 - 460
22 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q235A
t > 150
185 min.
375 - 460
21 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q235B
t ≤16
235 min.
375 - 460
26 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235B
16 < t ≤40
225 min.
375 - 460
25 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235B
40 < t ≤60
215 min.
375 - 460
24 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235B
60 < t ≤100
205 min
375 - 460
23 min
hot-rolled control-rolled or normalized details
hot-rolled, control-rolled, or normalized details
Eltel Middle East, Syria ,
Standard for Structural Steel – Chinese Steel Specification
GB 700-88
Grade Q235C
t ≤ 16
235 min.
375 - 460
26 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235C
16 < t ≤40
225 min.
375 - 460
25 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235C
40 < t ≤60
215 min.
375 - 460
24 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235C
60 < t ≤100
205 min.
375 - 460
23 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235C
100 < t ≤150
195 min.
375 - 460
22 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235C
t > 150
185 min.
375 - 460
21 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235D
t ≤ 16
235 min.
375 - 460
26 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235D
16 < t ≤40
225 min.
375 - 460
25 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235D
40 < t ≤60
215 min.
375 - 460
24 min.
hot-rolled, control-rolled, or normalized details
Eltel Middle East, Syria , Specification
Standard for Structural Steel – Chinese Steel Specification
Designation Section Thickness / Diameter (mm)
Yield Strength (MPa) Tensile Strength (MPa) % Elongation
Heat Treatment
Notes
GB 700-88
Grade Q235D
60 < t ≤100
205 min.
375 - 460
23 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235D
100 < t ≤150
195 min.
375 - 460
22 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q235D
t > 150
185 min.
375 - 460
21 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q255A
t ≤ 16
255 min.
410 - 510
24 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q255A
16 < t ≤40
245 min.
410 - 510
23 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q255A
40 < t ≤60
235 min.
410 - 510
22 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q255A
60 < t ≤100
225 min.
410 - 510
21 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q255A
100 < t ≤150
215 min.
410 - 510
20 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q255A
t > 150
205 min.
410 - 510
19 min.
hot-rolled or control-rolled
details
GB 700-88
Grade Q255B
t ≤ 16
255 min.
410 - 510
24 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q255B
16 < t ≤40
245 min.
410 - 510
23 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q255B
40 < t ≤60
235 min.
410 - 510
22 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q255B
60 < t ≤100
225 min.
410 - 510
21 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q255B
100 < t ≤150
215 min.
410 - 510
20 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q255B
t > 150
205 min.
410 - 510
19 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q275
t ≤ 16
275 min.
490 - 610
20 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q275
16 < t ≤40
265 min.
490 - 610
19 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q275
40 < t ≤60
255 min.
490 - 610
18 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q275
60 < t ≤100
245 min.
490 - 610
17 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q275
100 < t ≤150
235 min.
490 - 610
16 min.
hot-rolled, control-rolled, or normalized details
GB 700-88
Grade Q275
t > 150
225 min.
490 - 610
15 min.
hot-rolled, control-rolled, or normalized details
) Impact !est ata
Absorbed Energy Specification
Designation
GB 700-88
Grade Q215B
Temp. Test Piece
L, V, F
J
Notes
Avg
°C
27
20
details
Eltel Middle East, Syria ,
Standard for Structural Steel – Chinese Steel Specification
GB 700-88
Grade Q235D
L, V, F
27
-20
details
GB 700-88
Grade Q255B
L, V, F
27
20
details
Eltel Middle East, Syria ,
Standard for Structural Steel – Chinese Steel Specification
"ote for #$%& B: GB 700-88, Grade Q235B
The manganese content shall be up to 0.60% for rimmed steels. The silicon content shall be less than or equal to 0.07% for rimmed steels, less than or equal to 0.17% for semi-killed steels, and greater than or equal to 0.12% for fully killed steels. The following residual element maximums are allowed: N 0.008% (for basic oxygen furnace steels), Cu 0.30%, Ni 0.30% and Cr 0.30%. If the manufacturer can guarantee that residual element content meets the specifications, analysis for these elements may be avoided. For steels made from iron smelted from arsenic-containing minerals, the arsenic content shall be decided by agreement between the purchaser and the supplier. If there is no arsenic in the source materials, the arsenic analysis may be avoided. If the steel meets the given mechanical property requirements, the listed minimums for carbon and manganese contents are not required for product delivery, but their contents shall be reported in the quality certificate. Chemical composition requirements may be applied to steel billets, including continuously cast feed/bloom, cast feed and the products made from them.
Eltel Middle East, Syria ,
Standard for Structural Steel – Chinese Steel Specification
A) 'i(h Stren(th lo allo* steel – General Information Select
Specification
Designation
Product Form
GB/T 1591-94
Grade Q345A
bar, plate, strip, shape
carbon steel High Strength Low Alloy Structural Steels
details 77.140.20
Current
GB/T 1591-94
Grade Q345B
bar, plate, strip, shape
carbon steel High Strength Low Alloy Structural Steels
details 77.140.20
Current
GB/T 1591-94
Grade Q345C
bar, plate, strip, shape
carbon steel High Strength Low Alloy Structural Steels
details 77.140.20
Current
GB/T 1591-94
Grade Q345D
bar, plate, strip, shape
carbon steel High Strength Low Alloy Structural Steels
details 77.140.20
Current
GB/T 1591-94
Grade Q345E
bar, plate, strip, shape
carbon steel High Strength Low Alloy Structural Steels
details 77.140.20
Current
carbon steel Corrosion Resistant Steel Plates and Strips for Container
details 77.140.50
Current
details 77.140.50
Current
details 77.140.75
Current
details 77.140.75
Current
carbon steel Superior Atmospheric Corrosion Resisting Structural Steel details 77.140.20
Current
GB/T 18982-2003 Grade Q345GNHJ
plate, strip
GB/T 18982-2003 Grade Q345GNHLJ
plate, strip
GB/T 3093-2002
Grade Q345A
seamless tube
GB/T 3094-2000
Grade Q345
welded tube, seamless tube
GB/T 4171-2000
Grade Q345GNH
plate, strip, shape
GB/T 4171-2000 Grade Q345GNHL GB/T 8163-1999
Grade Q345
plate, strip, shape seamless tube
Alloy Group
alloy steel
Title
Corrosion Resistant Steel Plates and Strips for Container
carbon steel High-Pressure Seamless Steel Tubes for Diesel Engine ---
alloy steel
Cold Drawn Shaped Steel Tubes
Notes ICS Number Status
Superior Atmospheric Corrosion Resisting Structural Steel details 77.140.20
carbon steel Seamless Steel Tubes for Liquid Service
details 77.140.75
Current Current
Eltel Middle East, Syria ,
Standard for Structural Steel – Chinese Steel Specification
B) Chemical Composition Specification
Designation
C
Mn
P
S
Si
Cr
Ni
V
Al
Cu
Ti
Nb
Notes
GB/T 1591-94 Grade Q345A 0.20 max. 1.00 - 1.60 0.045 max. 0.045 max. 0.55 max. 0.30 max. 0.30 max. 0.02 - 0.15 --- 0.30 max. 0.02 - 0.20 0.015 - 0.060 details GB/T 1591-94 Grade Q345B 0.20 max. 1.00 - 1.60 0.040 max. 0.040 max. 0.55 max. 0.30 max. 0.30 max. 0.02 - 0.15 --- 0.30 max. 0.02 - 0.20 0.015 - 0.060 details
Specification
Designation C
Mn
P
S
Si
Cr
Ni
V
Al
Cu
Ti
Nb
Notes
GB/T 1591-94
Grade Q345C
0.20 max.
1.00 1.60
0.035 max.
0.035 max.
0.55 max. 0.30 max.
0.30 max.
0.02 0.15
0.015 min.
0.30 max. 0.02 - 0.20
0.015 0.060
details
GB/T 1591-94
Grade Q345D
0.18 max.
1.00 1.60
0.030 max.
0.030 max.
0.55 max. 0.30 max.
0.30 max.
0.02 0.15
0.015 min.
0.30 max. 0.02 - 0.20
0.015 0.060
details
GB/T 1591-94
Grade Q345E
0.18 max.
1.00 1.60
0.025 max.
0.025 max.
0.55 max. 0.30 max.
0.30 max.
0.02 0.15
0.015 min.
0.30 max. 0.02 - 0.20
0.015 0.060
details
GB/T 189822003
Grade Q345GNHJ
0.12 max.
0.20 0.70
0.07 - 0.12
0.030 max.
0.20 0.50
---
---
---
---
0.25 0.50
0.030 max.
---
details
GB/T 189822003
Grade Q345GNHLJ
0.12 max.
0.20 0.50
0.07 - 0.12
0.030 max.
0.25 0.75
0.30 1.25
0.65 max.
---
---
0.25 0.50
---
---
details
GB/T 3093-2002 Grade Q345A
0.20 max.
1.00 1.60
0.030 max.
0.030 max.
0.30 max.
---
---
0.20 max.
---
---
---
GB/T 3094-2000 Grade Q345
---
---
---
---
---
---
details
0.03 max.
---
details
0.55 max. 0.30 max.
---
---
---
---
---
GB/T 4171-2000
Grade Q345GNH
0.12 max.
0.50 0.90
0.07 - 0.12
0.035 max.
0.20 0.60
---
---
---
---
0.25 0.50
GB/T 4171-2000
Grade Q345GNHL
0.12 max.
0.20 0.50
0.07 - 0.15
0.035 max.
0.25 0.75
0.30 1.25
0.65 max.
---
---
0.25 0.55
---
---
details
---
---
---
---
---
---
---
---
---
---
---
---
details
GB/T 8163-1999 Grade Q345
---
Eltel Middle East, Syria ,
Standard for Structural Steel – Chinese Steel Specification
C) Mechanical Properties
Specification Designation Section Thickness / Diameter (mm) GB/T 1591-94 Grade Q345A
Yield Strength (MPa)
Tensile Strength (MPa)
% Elongation
345 min.
470 - 630
21 min.
hot rolled, control rolled, normalized, or normalized and details tempered
35
325 min.
470 - 630
21 min.
hot rolled, control rolled, normalized, or normalized and details tempered
50
295 min.
470 - 630
21 min.
hot rolled, control rolled, normalized, or normalized and details tempered
100
275 min.
470 - 630
21 min.
hot rolled, control rolled, normalized, or normalized and details tempered
345 min.
470 - 630
21 min.
hot rolled, control rolled, normalized, or normalized and details tempered
35
325 min.
470 - 630
21 min.
hot rolled, control rolled, normalized, or normalized and details tempered
50
295 min.
470 - 630
21 min.
hot rolled, control rolled, normalized, or normalized and details tempered
100
275 min.
470 - 630
21 min.
hot rolled, control rolled, normalized, or normalized and details tempered
345 min.
470 - 630
22 min.
hot rolled, control rolled, normalized, or normalized and details tempered
t ≤16
GB/T 1591-94 Grade Q345A
16 < t
≤
GB/T 1591-94 Grade Q345A
35 < t
≤
GB/T 1591-94 Grade Q345A
50 < t
GB/T 1591-94 Grade Q345B
≤
t ≤16
GB/T 1591-94 Grade Q345B
16 < t
≤
GB/T 1591-94 Grade Q345B
35 < t
≤
GB/T 1591-94 Grade Q345B
50 < t
GB/T 1591-94 Grade Q345C
≤
t ≤ 16
Heat Treatment
Notes
Eltel Middle East, Syria ,
Standard for Structural Steel – Chinese Steel Specification Section Thickness / Diameter Yield Strength (mm) (MPa)
Tensile Strength (MPa)
Sp ec ifi ca ti on
De sig na ti on
GB/T 1591-94
Grade Q345C
16 < t ≤35
325 min.
470 - 630
GB/T 1591-94
Grade Q345C
35 < t ≤50
295 min.
GB/T 1591-94
Grade Q345C
50 < t ≤100
GB/T 1591-94
Grade Q345D
GB/T 1591-94
% Elongation
Heat Treatment
Notes
22 min.
hot rolled, control rolled, normalized, or normalized and tempered
details
470 - 630
22 min.
hot rolled, control rolled, normalized, or normalized and tempered
details
275 min.
470 - 630
22 min.
hot rolled, control rolled, normalized, or normalized and tempered
details
t ≤ 16
345 min.
470 - 630
22 min.
hot rolled, control rolled, normalized, or normalized and tempered
details
Grade Q345D
16 < t ≤35
325 min.
470 - 630
22 min.
hot rolled, control rolled, normalized, or normalized and tempered
details
GB/T 1591-94
Grade Q345D
35 < t ≤50
295 min.
470 - 630
22 min.
hot rolled, control rolled, normalized, or normalized and tempered
details
GB/T 1591-94
Grade Q345D
50 < t ≤100
275 min.
470 - 630
22 min.
hot rolled, control rolled, normalized, or normalized and tempered
details
GB/T 1591-94
Grade Q345E
t ≤16
345 min.
470 - 630
22 min.
hot rolled, control rolled, normalized, or normalized and tempered
details
GB/T 1591-94
Grade Q345E
16 < t
≤
35
325 min.
470 - 630
22 min.
hot rolled, control rolled, normalized, or normalized and tempered
details
GB/T 1591-94
Grade Q345E
35 < t
≤
50
295 min.
470 - 630
22 min.
hot rolled, control rolled, normalized, or normalized and tempered
details
GB/T 1591-94
Grade Q345E
50 < t
100
275 min.
470 - 630
22 min.
hot rolled, control rolled, normalized, or normalized and tempered
details
GB/T 189822003
Grade Q345GNHJ
---
345 min.
480 min. (L)
24 min. (L) hot rolled
---
GB/T 189822003
Grade Q345GNHLJ
---
345 min.
480 min. (L)
24 min. (L) hot rolled
---
GB/T 3093-2002
Grade Q345A
---
345 min.
470 - 630
22 min.
cold drawn and heat treated
details
GB/T 3094-2000
Grade Q345
---
345 min.
510 min.
21 min.
cold drawn
details
GB/T 4171-2000 Grade Q345GNH
t ≤ 16
345 min.
440 min.
22 min.
hot-rolled, and control-rolled or normalized
details
GB/T 4171-2000 Grade Q345GNHL
t ≤2.5
320 min.
450 min.
26 min.
cold-rolled, annealed
details
GB/T 4171-2000 Grade Q345GNHL
t ≤ 16
345 min.
480 min.
22 min.
hot-rolled, and control-rolled or normalized
details
GB/T 8163-1999
Grade Q345
t ≤ 16
325 min.
490 - 665 (L)
21 min. (L) heat treated
details
GB/T 8163-1999
Grade Q345
t > 16
315 min.
490 - 665 (L)
21 min. (L) heat treated
details
≤
Eltel Middle East, Syria ,
Standard for Structural Steel – Chinese Steel Specification
) Impact !est ata Absorbed Energy Section Thickness
Temp.
Specification
Designation
mm
Avg
°C
GB/T 1591-94
Grade Q345B
L, V, F
---
34
20
details
GB/T 1591-94
Grade Q345C
L, V, F
---
34
0
details
GB/T 1591-94
Grade Q345D
L, V, F
---
34
-20
details
GB/T 1591-94
Grade Q345E
L, V, F
---
27
-40
details
GB/T 18982-2003
Grade Q345GNHJ
L, V
t ≥6
47
20
details
GB/T 18982-2003
Grade Q345GNHLJ
L, V
t ≥6
47
20
details
GB/T 4171-2000
Grade Q345GNH
L, V
---
27
0 or -20
details
GB/T 4171-2000
Grade Q345GNHL
L, V
---
27
0 or -20
details
Test Piece
J
Notes
