DIN 2391 DIN1630 Seamless Galvanized Steel Tube , Cold Drawn St 35 St37 Steel Pipe

Delivery Time:25~35days
Certification:ISO9001 14001 BV TUV PED DNV etc

DIN 2391 DIN1630 Seamless Galvanized Steel Tube , Cold Drawn St 35 St37 Steel Pipe

Quick Detail:

Standard: DIN 2391 / DIN1630 / EN 10305-4 / EN 10305-1

Material Grade: St 35 / St37 / St37.4
Size:(mm)
Out Dimensions: 6mm – 350mm
Wall Thickness: 0.8mm - 30mm
Length: Fixed(6m,9m,12,24m) or normal length(5-12m)

Description:

Dimensions of the galvanized tubes for hydraulic and pneumatic lines:

Outside diameter ranges from 6 to 350 mm and the wall thickness ranges from 0.8 to 30 mm. Precision steel tubes are delivered according to EN 10305-4, DIN 2391-1, STN 42 6711 and 42 6712, ČSN 42 6711 and 42 6712.

Synopsis of Process Routing:

DIN highly accurate cold drawn bright seamless steel tube is used as the tube to be galvanized, the outer wall is electroplated, caps are covered at two ends of tube to prevent from the dust.

Main Features:

Different color of zinc such as white, yellow, army-green, black is evenly distributed in the surface of the tube, good brightness and antirust and antisepsis could improve after zinc coated.
 

Length of the galvanized tubes:

in diameter <= 16 mm  >=6000 + 100 mm
in diameter >= 16 mm  <=24000 + 50 mm

Tolerances of the zinc coated tubes:

-tolerances of the outside diameter:

diameter between 4 - 30 mm	±0,08 mm
diameter between 35 - 38 mm	±0,15 mm
diameter above 42 mm	±0,20 mm

-tolerances of the inside diameter are according to EN 10305-4

-tolerance of the wall thickness ± 10%

The Main Steel grades for the zinc coated tubes:

St 30 Si / St 30 Al / St 35 / St37.4 / St45 / St 52 / St52.4 / E235, E255,E355
 

DIN 2391 / EN 10305-1/ EN 10305-4
Precision seamless tube and pipe with European&Germany standard
Application:	for Atuo;for machinery use; Oil cylinder tube; Motorcycle shock reducer steel tubes; Auto shock reducer inner cylinder.
Size(mm):	O.D.:6mm-350mm ; W.T.:1-30mm; L:max 24000

Grade and Chemical Composition(%):

Grade	Chemical Composition(%):
C max	Si max	Mn	P max	S max
St 35	0.17	0.35	≥0.40	0.025	0.025
St 30 Si	0.10	0.30	<=0.55	0.025	0.025
St 30 Al	0.10	0.05	<=0.55	0.025	0.025
St 45	0.21	0.35	≥0.40	0.025	0.025
St 52	0.22	0.55	≤1.60	0.025	0.025

Condition on delivery:

Steel Grade	BK	BKW	GBK	NBK