1.ISO9001,TS16949 2.Good quality and poweful R&D ability 3.Competitive price&fast delievery 4.Different sizes are availabl

 

 

1. We are a professional hydraulic cylinder manufacturer. They are used  for construction, mining, forestry, marine, demolition, military, material handling, agriculture, truck and trailer, loader, utility and waste management.

2.You can be assured that our products have long life, superior performance and high reliabilit.

3.Need more production information, please contact us.

Welcome you visit our factory,we can design the product based on your drawing.

.manufacture method:

precise cold drawn  low temperature annealing   honed inside   anti rust handle   packing  4.delivery condition: BKS

Hydraulic Casing Pipe  Feature

1)Grade 20# 45# 16Mn  27SiMn 25Mn

2) Metric size:   Inside diameter from 40 to 500mm,

                  Max length 8 m.

3) Straightness: 0.2-0.3

4) Tolerance EXT: DIN 2391  GB/T8713

5) Tolerance INT:  ISO4394 H8-H9

6) Roughness(Ra): 0.2 to 0.8µ

7) Type: cold drawing, normalizing treatment, honing

8)  Condition: BK, BKW, BKS, NBK, GBK

9) Prime quality of raw material from famous steel mill

.  High precision on the tolerance of tube size

10)The tubes are specialized in hydraulic cylinder, and other cylinders.

automobile parts, motorcycle part, shock absorber

Processing	Cylinder diameter	Length /mm	Straightness	Size accuracy	Wall thickness/mm	Inner bore roughness
Cold-drawn	ID30~OD250	≤13M	0.3~1.0mm/m	H9-H11	±8%	0.8~1.6um
Honed tube	ID50~OD325	≤10M	0.3~1.0mm/m	H7-H9	±8%	0.4~0.8um

 Mechanics performance

Material	Tensile strength	Yield strength	Elongation	Hardness
Ck20	510 σ N/mm2	500σsN/mm2	5δs%	175HB
Ck45	660 σN/mm2	630σsN/ mm2	4δs%	207HB
ST52	580σ N/mm2	420σsN/ mm2	10δs%	190HB
27SiMn	840σ N/mm2	805σsN/ mm2	7.5δs%	230HB

high precision honed hydraulic cylinder tube pipe chromeplate