JIS G3439 Seamless Steel Oil Well, Casing, Tubing and Drill Pipe

JIS G3439

Application: Seamless Steel Oil Well, Casing, Tubing and Drill Pipe

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JIS G3439 seamless steel pipe
Seamless Steel Oil well Casing, tubing and the Drill pipe

(JIS G 3439 / JISG3439)

Table 1 and symbol

Type of tube

Material Symbol

Type according to the application

The type of the material

Short thread casing

1 kinds

STO-G

Two kinds

STO-H

Three kinds

STO-J

Four kinds

STO-N

Long thread casing

Three kinds

STO-J

Four kinds

STO-N

Tudor Bing

Upset with no tubing external tubing upsets

Two kinds

STO-H

Three kinds

STO-J

Four kinds

STO-N

Drill Pipe

Do not upset drill pipe
out of the upset drill pipe

1 kinds

STO-C

Two kinds

STO-D

Three kinds

STO-E

* World Comferens

Standard for

Standard number

Material Symbol

JIS

G 3439

STO-G

STO-H

STO-J

STO-N

STO-C

STO-D

STO-E

KS
D 3584

STO-G

STO-H

STO-J

STO-N

STO-C

STO-D

STO-E

API

5CT

H-40

J-55

K-55

N-80