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Precision honing steel pipe

St52 E355 Hydraulic Cylinder Precision Honing Tube

Standard:BS EN GB ASTM AISI DIN JIS

Certificate:API CE RoHS BIS JIS ISO9001

Tolerance:±1% 0.05mm

Processing Service:Welding Punching Cutting Bending polishing

Section Shape:Round

Oiled or Non-oiled:heavy Oiled or according your request

  • Product Detail

Production method

The manufacturing method of precision honing tube, heating: heating the tube blank in an annular furnace; piercing: hot tube blank is pierced by a piercing machine; annealing: annealing the tube blank; borax: removing oxide scale; hot rolling: introducing the annealed tube blank into the rolling Pipe mill hot rolling; tube stripping: separating the rolled tube from the mandrel; stress relief annealing: introducing the rolled tube into a heating furnace and heating to obtain an annealed tube blank; pickling treatment: removing the rust on the surface; phosphating treatment: The chemically formed film of zinc phosphate is formed on the surface; saponification treatment: forming a lubricating film such as metal soap; primary cold drawing: cold drawing of the tube blank to be cold drawn; secondary cold drawing: cold drawing of a cold drawn tube The second cold drawing process, to obtain the cold drawn tube; heat treatment: reduce the residual stress; honing: use CNC honing machine; hot straightening treatment; to obtain the cold drawn precision honing tube.


Processing technology

(1) Material selection: select metal bars of suitable size that meet national standards as raw material bars for processing honing tubes.
(2) Billeting, free forging and heat treatment process: The raw bar is processed by the billeting, free forging and heat treatment process.
(3) Straightening: Forging hammer straightening is performed on the treated raw material bar.
(4) Drilling deep holes: After punching through holes of suitable size on the raw bar, the pipe is made.
(5) Honing: The through-hole of the pipe is honed with a honing stone, so that the through-hole of the pipe meets the size and machining accuracy requirements of the honed pipe.
(6) Lathe outer circle planing: The outer wall and end face of the pipe are machined and planed by a lathe, so that the outer diameter of the pipe meets the size and machining accuracy requirements of the honing pipe, and the production of the honing pipe is completed.


St52 E355 Hydraulic Cylinder Precision Honing Tube

                                       St52 E355 Hydraulic Cylinder Precision Honing Tube

Section Shape

Round

Tolerance

±1%

Alloy Or Not

Non-Alloy

Thickness

1 - 60 mm

MOQ

5Ton

Length:

Client Requirement

Standard:

API, ASTM, GB, API 5L, API 5DP, ASTM A182-2001, ANSI A213M-2001,

Surface treatment

Black/Peeling/Polishing/Machined

Technique

cold rolled/drawn

Heat Treatment

Annealed; Quenched; Tempered

price terms

FOB,CRF,CIF,EXW all acceptable

Delivery Detail

inventory About 3-5; custom-made 10-15;rding to order's quantity.

Loading port

any port in China

Packing

standard export packing (inside:water proof paper,outside:steel covered with strips and pallets)

Payment Terms

T/T, L/C at sight,West Union,D/P,D/A,Paypal

Container size

20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)

40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)

40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)

Executive standard

Standard

DIN2391, EN10305, ASTM A519, GB/T 3639-200

Material

Q355B Q355D C20,ST52,E355 SAE1026.CK45 4130 4140 STKM 13C

Heat treatment

BK+S

Specification

 Outer diameter(mm) : 40-480mm

I.D Tolerance

H8-H9

Length

Fixed Length, Random Length(3--9m)or as requests of customers

Straightness

0.5-1/1000

ID roughness

RA 0.1-0.8micron(max)

Payment term

FOB, CFR, CIF ,EXW, FCA and so on

MOQ

3 tons

Technology

Honed & SRB(SKIVED AND ROLLER BURNISHED )

Application:

 hydraulic cylinder, swivel crane, injection machine and so on 

Conservation

anti rust oiled inside and outside surface, plastic caps in both ends

Package

 bundle with steel strip and knitting strip, or wooden case

Chemical composition and properties of each grade

Steel Grade

C

SI

Mn

P

S

Cr

Ni

Cu

20#

0.17-0.24

0.17-0.37

0.35-0.65

0.035

0.035

0.250

0.250

45#

0.42-0.50

0.17-0.37

0.50-0.80

0.035

0.035

0.250

0.250

Q345B

≤0.2

≤0.5

1.00-1.60

0.030

0.030

0.030

0.250

0.08

Q345D

≤0.2

≤0.5

1.00-1.60

0.030

0.030

0.250

0.250

0.15

25Mn

0.22-0.29

0.17-0.37

0.70-1.00

0.035

0.035

27SiMn

0.22-0.32

1.10-1.40

1.10-1.40

0.035

0.035

0.300

0.300

E355

≤0.2

≤0.55

≤1.6

0.025

0.025

SAE1026

0.22-0.28

0.15-0.35

0.60-0.90

0.040

0.050

Steel Grade

Rm Mpa

ReH Mpa

Elonggation

cold finished Rm Mpa

cold finished Elonggation

20#

≥520

≥375

≥15

≥550

≥8

45#

≥600

≥520

≥10

≥640

≥5

16Mn(Q345B /D)

≥600

≥520

≥14

≥640

≥5

25Mn

≥600

≥510

≥15

≥640

≥5

27SiMn

≥760

≥610

≥10

≥800

≥5

St45

≥520

≥375

≥15

≥550

≥5

E355(st52)

≥600

≥520

≥14

≥640

≥5

SAE1026

≥600

≥510

≥15

≥640

≥5

Working method

Working method

range

ID

H8

H9

H10

cold drawn

25-250

30-50

+0.0390

+0.0620

+0.1000

cold rolling

25-150

50-80

+0.0460

+0.0740

+0.1200

cold drawn-honed

40-250

80-120

+0.0540

+0.0870

+0.1400

cold drawn-SRB

50-250

120-180

+0.0630

+0.1000

+0.1600

cold drawn -polished

40-250

180-250

+0.0720

+0.1150

+0.1850

cold drawn-polish-SRB

50-250

as required

as required

as required

as required


FAQ

Q:What is your terms of payment?

A:We usually accept T/T in advance, L/C for large sum.If you prefer other payments terms, please discuss.

Q:What is the terms of delivery?

A:EXW, FOB, CIF

Q:What is the terms of packing?

A:Generally, we pack our goods in bundles or coils with rods or belts, we could also pack the goods as the customers' requirements.

Q:What is your delivery time?

A:For products in stock, we can ship it within 7 days after receiving the deposit.For custom order, production time is 15-30

workdays after received the deposit.

Q:Could you produce according to the samples?

A:Yes, we could customer-made by your samples or technique drawings, we could build the mold and fixtures.

Q:Can I place an sample order and what is your MOQ if I accept your quality?

A:Yes, we can send you samples but you may pay the express fees, our MOQ is 1 ton.

Q:How could you guarantee your products?

A:We accept and support the third-party inspection.We also could issue the warranty to customer to guarantee the quality.

Q:Where is the port of shipment?

A:Ningbo or Shanghai sea port.

Q:How can I get the price of needed product?

A:It's the best way if you can send us the material, size and surface, so we can produce for u to check the quality.If you

still have any confusion, just contact us, we would like to be helpful.

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