Product Details

Product Description

sT52 H8 honed pipe manufacturer of cold rolled steel pipe

The difference between honed pipe and seamless steel pipe

1, the main feature of seamless steel pipe is welded joints, can withstand greater pressure. The product can be very rough as cast or cold parts.

2,honed tube is the product in recent years, mainly the hole, the outer wall size has strict tolerances and roughness.

The characteristics of the honed tube

1. smaller diameter.

2. High precision can be done in small quantities

3. High-precision finished products, the surface quality is good.

4. Steel pipe cross-sectional area is more complex.

5. Steel pipe performance is superior, metal is relatively dense

mechanical property

Delivery Condition	Cold drawn+ stress-relieved(BK+S)(SR)			Cold fished (hard)(BK)
Steel Grade	Tensile strength (Rm Mpa)	Yield strength	Elogation A5%	Tensile strength (Rm Mpa)	Elogation A5%
20#	≥520	≥375	≥15	≥550	≥8
45#	≥600	≥520	≥10	≥640	≥5
E355(Q345B,St52)	≥600	≥520	≥14	≥640	≥5
25Mn	≥600	≥510	≥15	≥640	≥5
27SiMn	≥760	≥610	≥10	≥800	≥5

Descriptions of honed tube

Honed tube
Standard		DIN2391, EN10305, JIS G3445, ASTM A519, GB/T 8713...
Material		ST45, ST52, E355, E355SR, STKM13C, SAE1026, 20#, Q235B, CK45...
Heat treatment		BKS
Specification	Outer diameter(mm)		Inner diameter(mm)
	30-250		40-250
I.D Tolerance		H8-H9
Length		3-9m (Customers usually choose the 4~5.8m)
Straightness		1/1000
ID roughness		RA 0.4micron(max)
Technology		Honed & SRB(SKIVED AND ROLLER BURNISHED )
Scope		Honed tube for hydraulic cylinder, swivel crane, injection machine and construction machine application

Delivery Condition

1. BK(+C)

the final heat treatment after cold forming, threfore small steel pipe plasticly, the plasticly degree does not guarantee

2. BKS(+SR)

have a stress relief after cold forming, heat treatment, steel pipe can be carried out within a certain limit in the appropriate processing again

3. NBK(+N)

after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium

4. BKW(+LC)

after final heat treatment, a tiny cold drawing deformation, continue again when machining steel pipe allowed inside certain limits cold deformation(bending, flaring)

5. GBK(+A)

after cold forming, annealing in non oxidizing medium protective gas

Packaging & Shipping

packaging details:

1.bundle with steel strips

2.brand parcel

3.wooden box

4.as clinets request

delivery details: 15days after payment

Company Information

Yantai Xinpeng Steel Pipe Co,.Ltd. is one of the best suppliers of the precision tube and hydraulic cylinder tube in North of China. Since 2002 cold drawn machine set importing, Xinpeng become a big precision steel pipe manufacture with 500Mt month productivity in the next 12 years.

Products widely used in the hydraulic cylinder of the heavy machinery, Cranes, excavator, forklifts and the Petrol industry.

1. Hydraulic Cylinder Tube------Main products of Xinpeng,

Used in the hydraulic cylinder of the heavy machinery, Cranes, excavator also forklifts. Material is various, mainly STKM-13CT ST52 CK45 and 1020. We can work and get the mechanical property of the clients need and extended the life of the hydraulic cylinder.

2.SRB tube ----- used in Elevator buffer and Hydraulic Cylinder .

This kind tube have a better roughness inner the tube, ra0.2-0.4um and can use directly in the hydraulic cylinder tube. Range: ID 50-250mm and Length can work at most 6M.

3. Cold finished tube---- Widely Used.

Processing range 30-300mm, biggest length is 11M.

Xinpeng Have passed ISo9001 verified from 2015; each tube of ours is strictly in quality control that can assure the product quality of Xinpeng.

our processing

application

1) Fuel injection lines/nozzles for diesel or gasoline engine;

2) Compressed natured gas CNG tube

3) Drive transmission: steering column elements

4) Gear shafts, hand brake, front axles, airbag inflators, stabilizers, seat fasteners, front-wheel

drive shafts

5) Mechanical structure pipe parts in automobile,motorcycles and vehicle

6) Hydraulic circuits, pneumatic lines and hydraulic suspension

7) Hydraulic cylinders

FAQ

testing

1.portable hardness tester

2.wall thickness gauge

3.ultrasonic flaw detector

4.digital rockwall hardness tester

5.tensile testing machine

6.USA import UT test machine

Our Services

Guaranteed

If products’ quality doesn’t match the description we give or peomise before you place your order,we peomise 100%refund.

(1): High quality products with reasonable price.

(2): We are factory and trading company.
(3): Every process will be checked by responsible QC which insures every product's quality.
(4): Professional packing teams which keep every packing safely.
(5): Trial order can be done in one week.
(6): Samples can be provided as your requirements. Free sample

(7): We have more than 20 years experience in exporting products to worldwide countries, can provide the high quality products.

(8): We have five thousand tons of stock in warehouses with abundant capital. Furthermore, we offer charge sales, credit and 7-day 24-hour services.

(9): Wide excellent experiences with after-sale service.

Tel +86-535-6835398

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