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St45 20# Mild Cold Drawn Steel Tube Round For Hydraulic Cylinder , DIN 2391 EN 10305

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St45 20# Mild Cold Drawn Steel Tube Round For Hydraulic Cylinder , DIN 2391 EN 10305

Country/Region	china
City & Province	wuxi jiangsu
Categories	Metal Casting Machinery

Product Details

St45 20# Mild Cold Drawn Steel Tube Round For Hydraulic Cylinder , DIN 2391 EN 10305

Quick Detail

Products: Hydraulic cylinder tubes / Precision steel tube

Standard: DIN 2391 / EN 10305 /GB8713-88 / GB/T3639-2000

Grade: St52 / E355 / St45 / SAE1026 / 20# / 27SiMn
SIZE:(mm)

OD: 45mm ~ 500mm
WT: 3mm ~ 50mm

Description

1. Variety

Processing form	I.D.mm	Length	Straightness	I.D.tolerance	I.D.Roughness(RA)
Cold-rolled	30-100	≤24M	0.3-1.0/1000	H8-H10	0.4-1.6um
Cold-drawn	30-250	≤24M		H8-H10	0.8-1.6um
Hone	40-500	≤24M		H8-H9	0.4-0.8um
SRB	50-250	≤24M		H8	0.1-0.4um

2. Material Specification and Ref. Document

ST52,BK+S OR NBK,DIN2391

OD:45-50mm WT:3-50mm

3. Chemical Compisition (%)

Steel grade	Chemical composition,%
	C	Si	Mn	P	S	Cr
	C	Si	Mn	≤
St45	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0.035	0.250
ST52(E355)	≤0.22	≤0.55	≤1.6	0.025	0.025	0.25
SAE1026	0.22-0.28	0.15-0.35	0.60-0.90	0.040	0.050	/
27SiMn	0.24-0.32	1.10-1.40	1.10-1.40	0.035	0.035	0.300
20#	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0.035	0.250

4. Mechanical Properties

Delivery condition	BK Cold finished(hard)		BKS Cold drawn and stress-relieved
Steel grade	Rm Mpa	Elongation A5(%)	Rm MPa	ReH MPa	Elonggation A5(%)
ST45	≥550	≥5	≥520	≥375	≥15
ST52(E355)	≥640	≥5	≥600	≥520	≥14
SAE1026	≥640	≥5	≥600	≥510	≥15
16Mn	≥640	≥5	≥600	≥520	≥14
20#	≥550	≥8	≥520	≥375	≥15

5. Supply Condition

Cold drawn seamless steel tube, stress relieved and honed or skived roller burnished

6. Surface Roughness

Ra = 0.4~0.8 Micron

7. Tolerances of Inner Dia.

Size of I.D	I.D Tolerance			Tolerance of wall thickness
Size of I.D	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

Applications:

Used in hydraulic system,nested card connector (pipe joints) with matching,,automobile and in the occasion where the high precision,brightness,cleanness and mechanical properties of the tube are required.

Product Photo

Factroy Pictures

BS 6323 DIN 2391 Precision Steel Tube Carbon Steel Seamless Tube 1

Pipe & Tube Processing

BS 6323 DIN 2391 Precision Steel Tube Carbon Steel Seamless Tube 2

Steel Pipe & Tube Application

BS 6323 DIN 2391 Precision Steel Tube Carbon Steel Seamless Tube 3

Packaging and Shipping

BS 6323 DIN 2391 Precision Steel Tube Carbon Steel Seamless Tube 4

BS 6323 DIN 2391 Precision Steel Tube Carbon Steel Seamless Tube 5

Certificates

BS 6323 DIN 2391 Precision Steel Tube Carbon Steel Seamless Tube 6

FAQ

Q1: ARE YOU FACTORY OR TRADER?
A1: Wuxi Sylaith Special Steel Co.,Ltd is a manufacturer of steel pipe and tube since 2010.

We've gained our Export Right and become an integrated company of industry and trade in order to satisfy buyer's multi-request on different material and products.

Q2: WHICH MATERIAL/PRODUCTS YOU CAN PROVIDE?
A2: Seamless Stainless Steel Pipe / Tube, Seamless Carbon Stainless Steel Pipe /Tube,Galvanized Steel Tube witn any Shape and Welded pipes can also be available.

Q3: HOW TO GET A SAMPLE?
A3: FREE samples are available for your checking and testing. And to get free samples, you need to send us you detailed receiving address (including post code) and your DHL/FedEx/UPS account for collecting samples, courier cost will be paid in your side.

Q4:CAN YOU PRODUCE THE PRODUCTS ACCORDING TO MY OWN DRAWINGS?
A4: Yes, we can produce the products according to your drawings that will be most satisfy you.

Q5: HOW TO VISIT YOUR FACTORY?
A5: Most of the main cities have flights to Shanghai; you can take flight to Shanghai Putong/Hongqiao International Airport.
If you come from Hongkong, it will take 2 hours by flight (every day 5 flight around noon time).