Specifications

1.AISI4140 pipe for telescopic cylinder
2.Top quality
3.Golden supplier
4.OEM Acceptable
5.MOQ:20MT

AISI4140 pipe for telescopic cylinder
  

Please look at the detailed information of Honed Tube first

Product name	HYRAULIC CYLINER HONED TUBE
Steel Grade	ST-52,4140,stainless steel, alloy steel and special steel
Inside diameter	40mm to 1000mm ;   skiving tube ID max 500mm
Length	Max 20mtr.
Straightness	0.5 /1000
Tolerance EXT	DIN 2391
Tolerance INT	ISO H8
Roughness(Ra)	0.2 to 0.4µ
Processing Type	cold drawing, normalizing treatment, honing or skiving
Marking	ID, OD,Xinpeng
Package	banding with steel strips, braiding parcel at outside
Conservation	Anti rust oiled coating on the inside and outside of the surface, plastic caps at both ends
Impact test	(-20°C, 27 J ,only for special requirement)

 

CHEMICAL COMPOSITION (%)  of honed tube

Si (Max)	Mn (Max)	C (Max)	P (Max.)	S (Max)
0.55	1.60	0.22	0.025	0.025

 

MECHANICAL PROPERTIES  of honed tube

Tensile strength Min	Yield Point Min	Elongation % Min
630 N/mm2	560 N/mm2	10

 

 

WHY CHOOSE US?

 

PLEASE CHECK OUT OUR ADVANTAGES BELOW

 

OUR ADVANTAGES OF HONED TUBE
Quality	The Top Ten in China
Raw material	from BAO STEEL, Tianjin, and Chengdu
Quality System	ISO9001:2008
Warranty period	2 years;                                                                                               For important customers, 5 years
Certificate	DNV, ABS,LR,BV, GL,CCS,RINA,KR,NK,RS
Equipment	35 sets honing machines;                                                         Skiving & burnishing machine (imported from Italy and Korea)
Capability	ID from 38.1mm to 1000mm,max length 18m
High Precision	Roughness of tube is 0.2μm ;                                             Straightness is less than 0.15/1000
Delivery time	5-30 days
Production output	500tons per month
Seaworthy packing	Caps at both end ,painted oil on ID and OD surface,                       parcel at outside .

 Production Process:

• Pretreatment : Pickling­—Phosphating—Saponification

 

 

 

• Cold drawn/cold rolled

 

 

• Annealing furnace——+SR

 

 

• Straightener—— Straightening

 

 

•  Straightness inspecting

 

 

• Dimension inspecting

 

  

 

• Sawing

 

 

 

• Lathe

 

 

• Polishing

 

 

• Products inspecting

 

 

• Finished Products

 

 

 

 

About our service:

 

 

 

1.Cargo track service during transporting and feedback service after cargo is loaded on board

 

 

 

2.Flexible terms of payment by

 

 

 

3.Big discount for repeat customers

 

 

 

4.Smooth delivering procedure

 

5. Payment Terms: T/T , L/C And so on.