standard

ASTM A333(ASME SA333)

Steel grade

Grade1, Grade3, Grade4, Grade6, Grade7, Grade8, Grade9, Grade10

Outside diameter

20mm-200mm

Thickness

0.1mm-20mm

Length

3m-8m

End protection

Plastic caps

Outside coating

Black painting, anti-corrosion oil, galvanized or as per required by customers

Packing

wooden boxes, plastic bags or according to different customers’ requests

Inspection and test

UT, ET, HT, RT, etc. and others according to the standard, or as the requests of the customers

Delivery condition

Annealed, Normalized, Normalized and tempered

Grade

C

Mn

P

S

Si

Ni

Grade1

≤0.30

0.40-1.06

≤0.025

≤0.025

Grade3

≤0.19

0.31-0.64

≤0.025

≤0.025

0.18-0.37

3.18-3.82

Grade4

≤0.12

0.50-1.05

≤0.025

≤0.025

0.18-0.37

0.47-0.98

Grade6

≤0.30

0.29-1.06

≤0.025

≤0.025

≥0.10

Grade7

≤0.19

≤0.90

≤0.025

≤0.025

0.13-0.32

2.03-2.57

Grade8

≤0.13

≤0.90

≤0.025

≤0.025

0.13-0.32

8.40-9.60

Grade9

≤0.20

0.40-1.06

≤0.025

≤0.025

1.60-2.24

Grade10

≤0.20

1.15-1.50

≤0.03

≤0.015

0.10-0.35

≤0.25

Grade11

≤0.10

≤0.6

≤0.025

≤0.025

≤0.35

35.0-37.0

Grade

Tensile strength

Yield strength

Elongation(%)

Y

X

Grade 1

≥380

≥205

≥35

≥25

Grade 3

≥450

≥240

≥30

≥20

Grade 4

≥415

≥240

≥30

≥16.5

Grade 6

≥415

≥240

≥30

≥16.5

Grade 7

≥450

≥240

≥30

≥22

Grade 8

≥690

≥515

≥22

Grade 9

≥435

≥315

≥28

Grade 10

≥550

≥450

≥22

Grade 11

≥450

≥240

≥18