Product Details

Geological Drilling Pipes

Product Description

Standard:

Q/OHAD006-2004 HengYang Composition

YB/T5052 Standard of China Metallurgical Industry

Application

For geological drilling

Grade and Chemical Composition(%):

Grade

Designation

Chemical Composition

Max

DZ40

37Mn5

0.33~0.39

0.15~0.35

1.20~1.45

0.025

0.020

0.20

≤0.15

≤0.10

50Mn

0.48~0.56

0.17~0.37

0.70~1.00

0.035

0.25

0.30

≤0.25

DZ50

DZ55

45Mn2

0.42~0.49

0.17~0.37

1.40~1.80

0.035

0.25

0.30

≤0.30

≤0.15

36Mn2V

0.35~0.40

0.20~0.40

1.40~1.65

0.025

0.015

0.20

≤0.15

≤0.10

0.10~0.16

42MnMo7

0.40~0.46

0.15~0.35

1.60~1.85

0.025

0.015

0.20

≤0.15

0.15~0.25

STM—

R780

36Mn2V

0.35~0.40

0.20~0.40

1.40~1.65

0.025

0.015

0.20

≤0.15

≤0.10

0.10~0.16

42MnMo7

0.40~0.46

0.15~0.35

1.60~1.85

0.025

0.015

0.20

≤0.15

0.15~0.25

DZ60

45MnMoB

0.41~0.49

0.17~0.37

0.90~1.20

0.030

0.25

≤0.25

0.20~0.30

≤0.08

0.001~0.005

25CrMnMo

0.23~0.28

0.17~0.37

0.90~1.10

0.020

0.010

0.20

0.60~0.80

0.15~0.25

Note: pipes of other grades can also be provided as per agreement

Dimension Tolerances:

Allowed OD and Wall Thickness tolerances for pipes delivered as per Q/OHAD006-2004 .

OD	Allowed Tolerance	Wall Thickness	Allowed Tolerance
<50mm	±0.40mm	≤5mm	+12%S -10%S
50~100mm	±1%D	>5mm	±10%S
>100mm	±1.00mm	>5mm	±10%S

Allowed ID and Wall Thickness tolerances for pipes delivered as per Q/OHAD006-2004 .

Allowed ID tolerance

Allowed Thickness tolerance

+1.2%d

-0.8%d

±10%S

Packaging & Shipping