Product Details

Product Description

Good Hardness ISO9001 Carbon BKS Seamless Steel Pipe

Honed tube
Standard	DIN2391, EN10305, JIS G3445, ASTM A519, GB/T 8713...
Material	ST45, ST52, E355, E355SR, STKM13C, SAE1026, 20#, Q235B
Heat treatment	BK+S
Specification	Outer diameter(mm)	Inner diameter(mm)
	30-250mm	40-250
I.D Tolerance	H8-H9
Length	Max 6m
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

mechanical property

Delivery condition	BKS Cold Drawn & Stress-Relieved
Steel Grade	Rm MPa	ReH MPa	Elongation A5(%)
ST45	≥520	≥375	≥15
ST52(E355)	≥600	≥520	≥14
SAE1026	≥600	≥510	≥15
45#	≥600	≥520	≥10
20#	≥520	≥375	≥15

Delivery condition	BK Cold finished
Steel Grade	Rm MPa	Elongation A5(%)
ST45	≥550	≥5
ST52(E355)	≥640	≥5
SAE1026	≥640	≥5
45#	≥640	≥5
20#	≥550	≥8

Honed tube features

1, improved the surface roughness, roughness can be basically Ra ≤ 0.08 micro.

2, correction roundness, oval can be ≤ 0.01mm.

3. improved the surface hardness, so that the deformation of the force to eliminate, improve the hardness HV ≥ 4 °

4, after processing residual stress layer, improve fatigue strength increased by 30%.

5, improved with the quality, reduce wear and tear to extend the life of parts, but the parts of the processing costs instead.

we can provide such pipes:

1.Seamless steel tube and carbon tube

Widely used in oil,drilling, gas, Cranes, excavator also forklifts. Material is various, mainly STKM-13CT ST52 CK45 and AISI 1020. We can also offer as customized seamless steel tube.

2.precision steel tubes

cold drawn steel tube/cold rolled steel pipe

Grade: 20#45#16Mn25Mn Q345 27SiMnE355ST52 STKM13A STKM13C

Standard: GB/T8713GB/T3639DIN2391EN10305ASTMA519

Range: 30-300mm

Length: 11m(max)

The cold process can remove the oxide layer outside to improve surface and offer better mechanical property, also can change ID,OD,WT to meet every client request.

3. Honed steel tube&SRB steel pipe

ID Tolerance: H8H9 or as client's request

ID Roughness: RA0.4micron(max)

Length: 6m(max)

Inner roughness: Ra0.2-0.8um

Straightness: 1:1000 or customized

This process can improve the roughness of the inner tube to 0.2-0.8um and make tube for cylinder using directly.

4.Hydraulic cylinder steel tube

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 2008; each tube of ours is strictly in quality control that can assure the product quality of Xinpeng.

our processing

FAQ

Packaging & Shipping

packaging details:

1.bundle with steel strips

2.brand parcel

3.wooden box

4.as clinets request

delivery details: 20days after 30% payment in advance

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

application

1.Hydraulic and penumatic cylinder for automobile

2.Engineering Machinery

3.Textile machinery

4.Printing machinery

5.Oil drilling

6.Building construction

Seamless steel tube:

low and medium pressure boiler, high pressure boiler

ship-building, liquid service

petroleum cracking,

chemical fertilizer equipment

drawing-oil-equipment and structure purposes

Our Services

1. High quality seamless steel tube with reasonable price.
2. Wide excellent experiences with after-sale service.

3. Samples can be provided as your requirements.
4. Professional packing teams which keep every packing safety.
5. Every process will be checked by responsible QC which insures every product's quality.
6. Every process can be produced as to our clients' requirements.

7. Any questions can be answered in time after you told us.

8. Quick respond to your inquiry.