ST35 / ST45 Thick Wall DIN 2391 Pipe , Hydraulic Cylinder Precision Honed Tube

ST35 / ST45 Thick Wall DIN 2391 Pipe , Hydraulic Cylinder Precision Honed Tube

 

 

 

Quick Detail:

 

Standards: DIN2391 ST35 ST45

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 ST35 ST45

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

Grade: ST35 / ST45

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

 

 

Chemical composition:

 

Steel grade		Chemical composition, as a percentage by mass
Symbol	Material number	C max.	Si max.	Mn	P max.	S max.
St 30 Si	1.0211	0.10	0.30	<=0.55	0.025	0.025
St 30 Al	1.0212	0.10	0.05	<=0.55	0.025	0.025
St 35	1.0308	0.17	0.35	<=0.40	0.025	0.025
St 45	1.0408	0.21	0.35	<=0.40	0.025	0.025
St 52	1.0580	0.22	0.55	<=1.60	0.025	0.025
The following alloying elements may be added: Nb: <=0,03%; Ti: <=0,03%; V: <=0,05%; Nb + Ti + V: <=0,05%.

 

 

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	≥ 375	≥ 15
45#	≥ 640	≥ 5	≥ 600	≥ 520	≥ 10
16Mn	≥ 640	≥ 5	≥ 600	≥ 520	≥ 14
25Mn	≥ 640	≥ 5	≥ 600	≥ 510	≥ 15
27SIMn	≥ 800	≥ 5	≥ 760	≥ 610	≥ 10
ST45	≥ 550	≥ 5	≥ 520	≥ 375	≥ 15
E355(ST52)	≥ 640	≥ 5	≥ 600	≥ 520	≥ 14
SAE1026	≥ 640	≥ 5	≥ 600	≥ 510	≥ 15

 

 

About Hua Cheng Hydraulic Cylinder Branch Factory:

 

HuaCheng produce high quality hydraulic cylinder for our customers globally. Now having all kinds of advanced equiments morn than 200 sets, such as :hole grinding machine made in American, full-fuction machine, computer checking platform and so on. We can also provide the all kinds hydraulic cylinder parts.

 

 

Good choice for our hydraulic cylinder Tubes

 

1.Merge together with Europe security idea

Our whole set hydraulic cylinder system with multi-protection can protect the safety of worker &truck and cargo.

2.Specialized system configuration

Specialized system configuration that greatly improve work efficiency and reduce system weight .

3.custom made is available

We can design different hydraulic tubes for system applied for truck,lifting platform,hydraulic door and so on

 

 

Quality Control

 

Our Cylinder Tubes from purchased materials, processing, assembly, have strict quality control. (we passed the certification of ISO/ BV/TUV/PED etc)

 

 

Applications:

 

Our products are widely used in hydraulic and pneumatic power systems,petro-chemical and metallurgical fields, CNG cylinder productions and so on..

 

 

Competitive Advantage:

 

Huacheng Pipe Making Company is one of the largest seamless steel pipe manufacturers in China.We’ve passed API 5L,API 5CT, PED, BV, TUV certification and ISO quality system certification.With good quality and competitive price, we believe we could be your reliable supplier.

 

 

Factroy Pictures:

 

Pipe & Tube Processing

Factory Equipments:

 

Production Line:

Quality Control:

 

 

Steel Pipe & Tube Application:

Package:

Export Standard / Wooden Box

Main Certificates:

PED ISO BV TUV etc.

Main Customers: