DIN2391 St35 Hydraulic Tube High Precision Steel Tube

Product Description

DIN2391 St35 Hydraulic Tube High Precision Steel Tube

Precision tubes are used in hydraulic system, automobile, mechanical parts and in the occasion where the high precision, brightness, cleanness and mechanical properties of the tube are required.

Standard & Material:
JIS 3445 STKM11A, STKM12(A, B, C), STKM13(A, B, C), STKM14(A, B, C)
EN10305-1 E215, E235, E355
ASTM A519/ASTM A513 1010, 1020, 1025, 1035, 1045
BS6323 CFS, CFS3A, CFS4-11
DIN1630 ST37.4, ST44.4, ST52.4

Size:
OD: 6-90mm
WT: 1-20mm
Length: 3-12m

Technique: Cold-drawn seamless

Delivery condition: BK, BKW, BKS, GBK, NBK

Delivery condition and heat treatment processing of DIN2391 Carbon steel tube

Delivery Condition	Heat treatment process
+C	Cold drawn/hard. After the last cold forming, no heat treatment.
+LC	Cold drawn/soft.After the last heat treatment follows the cold drawing there is a light finishing pass.
+SR	Cold drawn and stress relieved annealed. After the final cold drawing process the tubes are stress relieved annealed in a controlled atmosphere.
+A	After the final cold drawing process the tubes are stress relieved annealed in a controlled atmosphere.
+N	Normalized. After the last cold drawing process the tubes are annealed in a controlled atmosphere.

Applications

Standards	Classifications		Descriptions	Applications
JIS3445 Carbon Steel Tube For Mechanical Structure	Class 11	A	STKM11A	Exhaust Pipe, Steering, Shock Absorber, Outer Diameter, Safety Handle, Print Roll, Motor Cover, Furniture
	Class 12	A	STKM12A	Cross Member, Axle Tube, Mechanical Roll, Bearing, Back Metal
		B	STKM12B	Propeller, Shaft, Oil Pressure, Cylinder
		C	STKM12C	Front Took, Front Hook
	Class 13	A	STKM13A	Propeller Shaft, Steering System, Cross Member, Kiru Pipe
		B	STKM13B	Oil Pressure Clinder, Breaking Back Metal, Mechanical Roll, Axle Tube, Propeller Shaft, Steering System
		C	STKM13C	Propeller Shaft, Axle Tube, Steering System
	Class 14	A	STKM14A	Steering System
		B	STKM14B	Cross Member, Push Tube, Axle Housing
		C	STKM14C	Axle Tube, Oil Pressure Cylinder
	Class 15	A	STKM15A	Cross Member, Frame Valve Locker Shaft, Side Member, Axle Tube, Steering System, Exhaust Tube
	Class 15	C	STKM15C	Propeller Shaft