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20 micron - 30 micron Piston Honed Tube , Telescopic Cylinder Tube

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20 micron - 30 micron Piston Honed Tube , Telescopic Cylinder Tube

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Brand Name:HY

Certification:ISO9001:2008

Price:Negotiation

Payment Terms:L/C, T/T

Supply Ability:30tons a day

Delivery Time:30days

Company Data

Jiangsu New Heyi Machinery Co., Ltd

Verified Supplier

Contact Person Patty

Business Type: Manufacturer

Officials: Yangshan Industrial Park Huishan District Wuxi Jiangsu China

Quality: Quality Certifitation Available

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Product Details Company Profile

Product Details

20 micron - 30 micron Piston Honed Tube , Telescopic Cylinder Tube

Detailed Product Description

Telescopic Cylinder Tube and Piston Tube

Our precision seamless tubes are suitable for the manufacture of pistons, telescopic cylinder. We can

supply hard chrome plating for the telescopic cylinder tube as well, and the technical delivery conditions

refer to the next page. A comparison of tubular piston rods versus solid piston rods of the same diameter

based on identical compressive, bending and torsional stresses show that the annular cross section

permits appreciable weight saving. By cold drawing, the tube piston rods have the decisive advantage of

more higher mechanical properties than the hot finished piston rods.

Chemical Composition

Grade	C	Si	Mn	P	S	Cu	Ni	Cr	Mo
CK20	0.17-0.24	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.25	≤0.30	≤0.20	/
CK45	0.42-0.50	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.25	≤0.30	≤0.20	/
ST52(16Mn)	≤0.20	≤0.55	1.00-1.60	≤0.035	≤0.035	≤0.25	≤0.30	≤0.20	/
42CrMo4	0.38-0.45	0.15-0.40	0.60-0.90	≤0.035	≤0.035	/	/	0.90-1.20	≤0.25

Mechanical property

Grade	Tensile Strength(MPa)	Yield strength(MPa)	Elongation %	Remark
CK20	≥580	≥480	15	CDS+KS
CK45	≥620	≥520	15	CDS+KS
ST52(16Mn)	≥580	≥520	16	CDS+KS
42CrMo4	≥980	≥850	14	I.H.+Q.T.

CDS: Cold Drawn Seamless

BKS: Stress Relieved Annealed

I.H.+Q.T.: Induction Hardened + Quench and tempered

Telescopic Cylinder Tube OD Chrome Plated Requirements:

Chrome Thickness	20-30 micron
Surface Roughness	Ra≤0.2 micron and Rt≤2 micro
OD Tolerance	ISO f7 on the diameter
Ovality	Half of the tolerance ISO f7
Straightness	≤0.2mm/m
Surface Hardness	850-1150HV (vickers)
Cohesion	No cracks,breaking or detaching after thermic shock (warming up at 300 celius degrees and coolng in water)
Porosity	Tested according to ISO 1456/1458 and result according to ISO4540 rating 8-10
Salt Spray Test	Test in natural salt spray according to ISO 9227/AST M B117 96 hours and result evaluation according to ISO4540 rating 8-10

Tolerance on ID

ID mm	Values of tolerances are in microns
ID mm	H7	H8	H9	H10
30	+21	+33	+52	+84
>30-50	+25	+39	+62	+100
>50-80	+30	+46	+74	+120
>80-120	+35	+54	+87	+140

Company Profile

Jiangsu New Heyi Machinery Co., Ltd

Jiangsu New Heyi Machinery Co., Ltd is specialized in producing precision long small diameter axes and hydraulic piston rod. The products are widely used in mine machinery industry, textile and printing machinery industry and so on. Hydraulic cylinder piston rods are also supplied as the OEM parts for many large and medium enterprises, such as Heli Forklift Ltd, Hangzhou Forklift Ltd, Sanyi Heavy Industry Ltd. We have enjoyed a good reputation with high quality and good after-sale service in recent years. Also our products are exported to USA, Canada, Southeast Asia, Austria, Australia and Brazil etc.

We have set up the principle of “high quality, good reputation”, carried out a series of rigorous quality

management system, and have already passed the ISO9001:2008 international quality system. Our inspection

apparatus and production equipment are advanced and superior, that ensure the product of high quality.

We have complete piston rod manufactured equipment covering all processes. The critical processes of heat

treatment and chrome plating are finished in our own company, which ensure the quality control of the key

technical requirements.

Our factory is located in Wuxi which is famous for the peaches. The transportation is very convenient, only

30 minutes to Wuxi Airport and railway station. About 1 kilometer from the entrance of the expressway access

to Shanghai. The factory covers an area of about 25000 square meters and has more than 200 employees,

among which more than 20 are technical engineers.

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