船舶用無縫鋼管

船規:
DNV、GL、ABS、LR、BV、CCS、KR、NK
鋼級 Grade

標準	鋼級						外徑	壁厚	船級社
GB/T5312	320、360、410、460、490						21.3-711mm	2-60mm	DNV、GL、LR、BV、CCS

異形鋼管

標準：
EN10210 — 非合金及細晶粒結構鋼熱成型結構管（空心材）
GB/T3094-2000—冷拔異型鋼管

鋼級：

標準

鋼級

方形管

矩形管

備注

邊長

壁厚

長邊

短邊

壁厚

EN10210-1

S235、S275、S355、S420、S460

40-400mm

2.6-20mm

50-500mm

30-300mm

2.6-20mm

GB/T3094-2000

10、20、Q195、Q235B、Q345B、Q345C、

20-280mm

2-20mm

20-400mm

10-200mm

2-20mm

Society

Standard or usage

Steel grade

chemical composition, %

C

Si

Mn

P

S

Cr

Ni

Cu

Al

Mo

V

P+S

GLR

Non alloly

GL-R 410

≤ 0.21

≤ 0.35

≤ 1.40

≤ 0.025

≤ 0.020

-

-

-

≥0.020

-

-

-

GB 18248

37Mn

0.34 ~0.40

0.10 ~0.30

1.35 ~1.65

≤ 0.030

≤ 0.030

≤ 0.30

≤ 0.30

≤ 0.20

-

-

-

≤ 0.055

EN 10297

34CrMo4

0.30 ~0.37

≤ 0.40

0.60 ~0.90

≤ 0.035

≤ 0.035

0.9 ~1.20

-

-

-

0.15 ~0.30

-

-

DNV

for pressure ASTM A53/A53M

A53B

≤ 0.30

-

≤ 1.20

≤ 0.050

≤ 0.045

≤ 0.40

≤ 0.40

≤ 0.40

-

≤ 0.15

≤ 0.08

-

ABS

for pressure

Grade 3

≤ 0.30

-

≤ 1.20

≤ 0.050

≤ 0.045

≤ 0.40

≤ 0.40

≤ 0.40

-

≤ 0.15

≤ 0.08

-

BV

for pressure

410HB

≤ 0.21

≤ 0.35

0.40 ~1.20

≤ 0.040

≤ 0.040

-

-

-

-

-

-

-

LR

for pressure

410

≤ 0.21

≤ 0.35

0.40 ~1.20

≤ 0.045

≤ 0.045

≤ 0.25

≤ 0.30

≤ 0.30

-

≤ 0.10

-

-

KR

for pressure

RST138

≤ 0.25

≤ 0.35

0.30 ~0.90

≤ 0.040

≤ 0.040

-

-

-

-

-

-

-

RST142

≤ 0.30

0.30 ~1.00

≤ 0.040

≤ 0.040

-

-

-

-

-

-

-

RST238

≤ 0.25

0.10 ~0.35

0.30 ~1.10

≤ 0.035

≤ 0.035

-

-

-

-

-

-

-

RST242

≤ 0.30

0.30 ~1.40

-

-

-

-

-

-

-

RST249

≤ 0.33

0.30 ~1.50

-

-

-

-

-

-

-

RST338

≤ 0.25

0.30 ~0.90

-

-

-

-

-

-

-

RST342

≤ 0.30

0.30 ~1.00

-

-

-

-

-

-

-

NK

for pressure

grade 1 No3/ KSTPG 42

≤ 0.30

≤ 0.35

0.30 ~1.00

≤ 0.040

≤ 0.040

-

-

-

-

-

-

-

CCS

for pressure

360

≤ 0.17

≤ 0.35

0.40 ~0.80

≤ 0.040

≤ 0.040

≤ 0.25

≤ 0.30

≤ 0.30

≤ 0.10

410

≤ 0.21

≤ 0.35

0.40 ~1.20

≤ 0.040

≤ 0.040

≤ 0.25

≤ 0.30

≤ 0.30

≤ 0.10

460

≤ 0.22

≤ 0.35

0.80 ~1.40

≤ 0.040

≤ 0.040

≤ 0.25

≤ 0.30

≤ 0.30

≤ 0.10

490

≤ 0.23

≤ 0.35

0.80 ~1.50

≤ 0.040

≤ 0.040

≤ 0.25

≤ 0.30

≤ 0.30

≤ 0.10