Cold Drawn High Mechanical Stainless Steel Honed Tube GB/T3639 , DIN2391

 

 
Cold Drawn High Mechanical Stainless Steel Honed Tubes GB/T3639, DIN2391 
 

 

 

 

Specifications
 
Standard:EN10305-1,DIN2391-2
Material:ST52,E355
Delivery condition:BKS,+SR
Manufacture:cold drawn+honed
Size:40*30-325*300

 

 

 

Based on the optimized cold drawn process  and reliable raw material source, we significantly reduce

 the stock margin for the honed tubes and increase dimensional accuracy of inside and outside diameters.

 By cold drawing, it improves mechanical properties which can provide a wall thickness reductions of up to 

30%, and leading to significant component weight reduction

 
 
 

Specifications

1 OD32-500mm W.T.3.5-80mm
2 ISO certificated DIN2391 En10305
3 Straightness:0.3~1mm/m
4 Inside Roughness:0.4~0.8um

steel pipes for hydraulic use

 

Material: C20, CK45, etc. also ST52 if given enough time. our products are widely used in hydraulic industry and is very popular both home and abroad.

 

And we can also make our products according to the customers needs.

 

 

 

Variety

Processing	Cylinder diameter	Length /mm	Straightness	Size accuracy	Wall thickness/mm	Inner bore roughness
Cold-drawn	ID30~OD250	≤13M	0.3~1.0mm/m	H9-H11	±8%	0.8~1.6um
Honed tube	ID50~OD325	≤10M	0.3~1.0mm/m	H7-H9	±8%	0.4~0.8um

 

 Mechanics performance

Material	Tensile strength	Yield strength	Elongation	Hardness
Ck20	510 σ N/mm2	500σsN/mm2	5δs%	175HB
Ck45	660 σN/mm2	630σsN/ mm2	4δs%	207HB
ST52	580σ N/mm2	420σsN/ mm2	10δs%	190HB
27SiMn	840σ N/mm2	805σsN/ mm2	7.5δs%	230HB