Cold Drawing BKW NBK GBK Galvanized Steel Tube / Galvanized Steel Pipe , DIN 2391 St30Si

Cold Drawing BKW NBK GBK Galvanized Steel Tube / Galvanized Steel Pipe , DIN 2391 St30Si

Quick Detail:

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

Material Grade: St30Si
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, ?SN 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.
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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:

-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
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Grade and Chemical Composition(%):

Condition on delivery: