Precision Cold Drawn Pipe DIN2391 NBK

Precision Cold Drawn Pipe DIN2391 NBK






Brand : Zhongxing Steel Pipe (by ourselves)





Specification : OD18mm to 121mm , Thickness 2mm to 18mm

DIN2391/EN10305/A519 Precision Steel Pipe

1. OD 6mm-90mm

2 wall thicknessm:1mm to 20mm

3. Dimensional accuracy: 0.08mm

4. Bore roughness: Ra 0.4-1.6

5. Widely used in Mechanical, Chemical, Oil, Automobile industries.

6. Main Material: ST37.4/E235; ST52.4/E355

7. Delivery State: BK/NBK/BKS/GBK

Carbon Precision Steel pipe	Specification	O.D.:4-114mm × W.T.:0.5-25mm × L: 12m (specific or random)
	Steel Grade	10#,20#,45#,16Mn, ST30Al,ST35, ST37,ST37.4,ST45,ST52,ST52.4,E155,E195,E235,E255,E355,etc
	Standards	DIN2391,EN10305,JIS G3445,Astm A106,ASTM A179,ASTM A519,etc.
	Delievery Condition	NBK(+N), GBK(+A), BK(+C) ,BKW(+LC) ,BKS(+SR)
	Application	Automotive pipeline system;hydraulic system of diesel engine and engineering machinery;hydraulic system of locomotive, aerospace and aviation,shipbuilding and various machinery;metal processing of wind power equipment;
	Surface treatment	Bare Tube (No coating)-Bright and smooth; Surface coating;Black and Phosphated;etc.

Size of I.D	I.D Tolerance			Tolerance of wall thickness
	H8	H9	H10	±7.5% >210mm ±10%
30	+0.0330	+0.0520	+0.0840
>30-50	+0.0390	+0.0620	+0.1000
>50-80	+0.0460	+0.0740	+0.1200
>80-120	+0.0540	+0.0870	+0.1400
>120-180	+0.0630	+0.1000	+0.1600
>180-250	+0.0720	+0.1150	+0.1850
>250-315	+0.0810	+0.1300	+0.2100

8. Tolerance on Outer Dia.


≤ Dia 40 +/-0.2 mm


≥ Dia 40 ≤ Dia 100 +/-0.3mm


≥ Dia 100 +/-0.5mm


9. Appearance


Tube shall have a smooth internal and external surface consistent with cold working process, tube inner surface should be free from rust, scratches and other surface irregularities.


10. Scope


Hydaulic cylinder tube for swivel crane, injection machine and construction machine application






Material : St 35,St45 , St 52






4. As per client`s request .






Length: Length for smls pipe is 4.8meters to 12meters .


generally 5-5.8meters random length for 20ft ctnr ,6-12m random length for 40ft ctnr, or fixed length like 5.8meters , 6meters ,11.8meters as per demand .


Ends : Plain ends, beveled ends


Raw material :Steel bar




























Seamless Steel Tube or pipe is our mainly products









Our company is a professional manufactuer in steel pipe .


We will provide you the excellent quality and best price with better professional service !

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Product Categories : Precision Steel Pipe