USA

UK

Germany

ASTM A 53

BS3601

DIN 1629

Grade A SMLS

HFS 22 & CDS 22

St 35

Grade B SMLS

HFS 27 & CDS 27

St 45

ASTM A 53

BS3601

DIN 1626

Grade A ERW

ERW 22

Blatt 3 St 34-2 ERW

Grade B ERW

ERW 27

Blatt 3 St 37-2 ERW

ASTM A 53

BS3601

DIN 1626

FBW

BW 22

Blatt 3 St 34-2 FBW

ASTM A 106

BS3602

DIN 17175 **

Grade A

HFS 23

St 35-8

Grade B

HFS 27

St 45-8

Grade C

HFS 35

ASTM A 134

BS3601

DIN 1626

EFW

Blatt 2 EFW

ASTM A 135

BS3601

DIN 1626

Grade A

ERW 22

Blatt 3 St 34-2 ERW

Grade B

ERW 27

Blatt 3 St 37-2 ERW

ASTM A 139

BS3601

DIN 1626

Grade A

EFW 22

Blatt 2 St 37

Grade B

EFW 27

Blatt 2 St 42

ASTM A 155 Class 2

BS3602

DIN 1626, Blatt 3 with certification C

C45

St 34-2

C50

St 37-2

C55

St 42-2

KC55

EFW 28

St 42-2 **

KC60

St 42-2 **

KC65

EFW 28S

St 52-2

KC70

St 52-2

API 5L

BS3601

DIN 1629

Grade A SMLS

HFS 22 & CDS 22

St 35

Grade B SMLS

HFS 27 & CDS 27

St 45

API 5L

BS3601

DIN 1625

Grade A ERW

ERW 22

Blatt 3 St 34-2 ERW

Grade B ERW

ERW 27 *

Blatt 4 St 37-2 ERW

API 5L

BS3601 Double welded

DIN 1626

Grade A EFW

ERW 22

Blatt 3 St 34-2 FW

Grade B EFW

ERW 27 *

Blatt 4 St 37-2 FW

API 5L

BS3601

DIN 1626

FBW

BW 22

Blatt 3 St 34-2 FBW