Annealed Round DIN 2391 Hydraulic Cylinder Tube / High Precision Cold Drawing Steel Pipe

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

Annealed Round DIN 2391 Hydraulic Cylinder Tube / High Precision Cold Drawing Steel Pipe

Quick Detail:

Standards: DIN2391 ST52 (16Mn)

Material Grade: 16Mn / 25Mn / 20# / 45# / 27SiMn / ST45 / ST52 / E355 / A519 SAE1518 / A519 SAE1026 /

Size(mm):

ID :45mm – 500mm

WT:3mm – 50mm

Description:

Standards: DIN2391 ST52 (16Mn)

(GB/T8713 GB/T3639 DIN2391 EN10305 ASTM A519)

Grade: ST52 (16Mn)

Inside Dimensions: 45mm ~ 500mm

Wall Thickness: 3mm ~ 50mm

Length: max 24000mm

Application: Hydraulic Cylinder

Packing: Beveled/black painting/ plastic caps/ in bundles/ steel strips/ wooden protection
Inspection and Test: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength, Yield Strength,Elongation, Flaring, Flattening, Bending, Hardness, Impact Test),Surface and Dimension Test,Nodestructive Test, Hydrostatic Test.
Surface treatment:Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Mark: As per customers’ requested.

Delivery Condition:Annealed, Normalized, Normalized and Tempered.

Processing Range And Precision:

Cold Drawn Tubes: ID:45mm-630mm Length:14,000mm Straightness:0.3-1.0 Precision:H8-H10 Roughness:Ra0.8-Ra1.6

Honing Tubes: ID:25mm-500mm Length:10,000mm Straightness:0.3 Precision:H7-H8 Roughness:Ra0.2-Ra0.8

ID Tolerance of Precision Honed Tubes:

SIZE of I.D	I.D.Tolerance	Tolerance of wall thickness
H8	H9	H10
30	+0.0330	+0.0520	+0.0840	<120mm(O.D)                 ±5% ≥120mm(D.D) to 210mm  ±7.5% >210mm                         ±10%
>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	+0.185
>250-315	+0.0810	+0.1300	+0.2100
>315-400	+0.0890	+0.1400	+0.2300

Mechanical Propety:

Material: 20# 45#,16Mn St45, St52, 25Mn,27SiMn, SAE1026.SAE1518 etc.

STANDARD: GB/T8713 GB/T3639 DIN2391 EN10305 ASTM A519

Delivery condition	cold finished(hard)(BK)	cold drawn and stress relieved(BK+S)
STEEL GRADE	Rm  MPa	Elongation (%)	Rm  MPa	ReH  MPa	Elongation (%)
20#	≥550	≥ 8	≥ 520