Products

DESCRIPTION

Basic Info

Usage	Boiler Pipe, Hydraulic/Automobile Pipe, Machinery Industry, Chemical Industry, Special Purpose
Section Shape	Round
Size	30mm~416mm
Length	Fixed Length, by Random
End Processing	Plain Ends
Surface	Bare Pipe, Anti-Rust Painting
Steel Material	St52, Q345b, 27simn, 15CrMo,40cr, 20cr,etc
Transport Package	Standard Seaworthy Packing
Specification	ASTM, DIN, GB/T
Trademark	Iron&steel
Origin	China
HS Code	73045910
Production Capacity	2000tons Per Month

Product Description

Honing/Roller burnishing Steel Pipe is a kind of smooth bore steel tube which is used to manufacture hydraulic cylinder barrels that is the core part of cylinder unitSize range: 40mm*30mm-580mm*500mm

Available steel grade:

SAE/AISI:	SAE1020, SAE1026, SAE1045, SAE4130, SAE4140
DIN:	ST52, ST52.3, ST52.4
EN:	E355, C45E, 25CrMo4, 42CrMo4, CK45, S45C, E410, E470
GB:	20#, 45#, 16Mn, Q345B, Q345C, Q345D, Q345E, 25Mn, 27SiMn,

Manufacture method: Cold rolled, hydraulic cold drawn, hot rolled+deep hole boringDelivery condition:

BK	BKW	BKS	GBK	NBK	Q+T
+C	+LC	+SR	+A	+N
Cold rolled	Cold drawn	Stress relieved	Annealed	Normalized	Quenched+Tempered

Bore treatment: Honing, skiving&roller burnishingBore roughness control: Ra0.25um max or Ra0, 35um max for honed tubes, Ra0.25um max for skived&roller burnished tubes. End finish: Plain ends with square cuts, free of burrs for honed tubes. Little bevelled ends for skived&roller burnished tubes. Standard export packing: In bundles tied with steel strips. Int&ext oil coating. End plastic caps. External packing by PVC bags and knit bags. Customized packing and marking can be provided upon request. H8 tolerance:

ID range	Tolerance	ID range	Tolerance
18< d ≤30	+0/+0.033	180< d ≤250	+0/+0.072
30< d ≤50	+0/+0.039	250< d ≤300	+0/+0.081
50< d ≤80	+0/+0.046	300< d ≤315	+0/+0.081
80< d ≤120	+0/+0.054	315< d ≤400	+0/+0.089
120< d ≤180	+0/+0.063	400< d ≤500	+0/+0.097

Difference between honed tube and skived&roller burnished tube: In hydraulic cylinder industry, there are 2 solutions for bore treatment: Honing, and skiving&roller burnishing. Honing or skiving&roller burnishing leads to different internal surface image, but both ensure good roughness.

Specifications of major steel material:

Processing form	I.D.mm	Length	Straightness	I.D.tolerance	I.D.Roughness(RA)
Cold-rolled	30-100	≤12M	0.3-1.0/1000	H8-H10	0.4-1.6um
Cold-drawn	30-250	≤12M		H8-H10	0.8-1.6um
Hone	40-500	≤12M		H8-H9	0.4-0.8um
SRB	50-250	≤9M		H8	0.1-0.4um

Cutting length upto buyer's request, Advanced numerical control cutter guarantee the pipe ends free from burrs and curling edges.
Professional Team guarantee the top quality of seaworthy packing and shipment worksFactory Show