Material and Standard

Item

Chinese  Standard

American  Standard

German  Standard

(1)

10#

A53-A

St37

DIN1626

A106-A

St37-2

DIN17175

A179-C

St35.8

DIN17175

(2)

20#

ASTM  A106-B

St45-8

DIN17175

ASTM  A53-B

St42-2

DIN1626

ASTM  178-C

St45-4

DIN1629

(3)

45#

ASTM A1045

CK45

(4)

16Mn

A210-C

St52.4

DIN1629

St52

DIN1629

(5)

37Mn5

J55

Note

(1)

Packing

Paint on the pipe and plastic covers at the ends

(2)

Payment

T/T  and   L/C

(3)

Use place

Structure , transport gas and oil , making machine part  and so on