En10305-1 E355+SR Seamless BKS Cold Drawn Steel Tube
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
product specification
Name | China export pneumatic cylinder non secondary seamless steel tubes |
Size | OD:20mm-300mm WT:2mm-30mm |
Length | 0.5-9m |
Material | 10#,20#, 45#,25Mn,E355(Q3 45B, St52),27SiMn |
Standard | GB/T8713,GB/T3639,DIN2391,EN10305,ASTMA519,ASTMA106-2006 |
Place of Origin | Yantai,China |
MOQ | 5MT |
Package | Bulk in master cartons, then on pallets, |
or according to customers' requirement | |
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Payment | L/C or T/T (30% in advance and 70& against the copy of B/L) |
Delivery | Within 20 days after confirming the deposit |
Working Method | Cold drawn/rolled, honed/SRB, polished |
precision bright tube grde and chemical composition
chemical composition(%) | |||||
grade | C | Si | Mn | P | S |
St35 | ≤0.18 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 |
St37.4(10#) | ≤0.18 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 |
St45(20#) | ≤0.25 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 |
St55(35#) | ≤0.22 | ≤0.55 | ≤1.50 | 0.035 | 0.035 |
St52(16Mn) | ≤0.20 | ≤0.55 | ≤1.50 | 0.035 | 0.035 |
CK45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 |
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.
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.
packaging details:
1.bundle with steel strips
2.brand parcel
3.wooden box
4.as clinets request
delivery details: 15days after payment
1.Our History
In 1992,Yantai Xinpeng steel pipe established.
In 2000,Xinpeng is equipped with JLB250T cold drawn machine set, LD120 precision cold rolled machine set, straightening machine, box heat treat furnaces(8000-10000mm)
In October 2002, Shandong Penghui Hydraulic Cylinder Co,. LTD. Was established.
In 2012, Xinpeng have equipped the CNC Skive and roller burnished machine set (6000mm)
In 2013, Xinpeng equipped several powerful honing machines. Combined cold drawn , cold rolling, heat treatment and SRB and honing process together to product the best quality products.
2. Our Factory
Yantai xinpeng steel pipe co,.ltd. is Located in the beautiful coastal city-Yantai, urban area of Yantai with convenient transportation.
Registered capital is 5 million Yuan.
Workers are more than 100 persons.
Monthly output is 500tons.
3.Our Product
Yantai Xinpeng Products includes the following:
1. Cold drawn tube
2, cold rolled tube
3,honed tube
4,cylinder tube
5. seamless tube
6.Alloy tube
7. Precision tube
Which are widely used in hydraulic and pneumatic cylinder for automobile, engineering machinery, textile machinery, printing machinery and other field.
Product standard: EN10305 DIN2391 GB/T3639 and so on.
4.Production Equipment
Xinpeng is equipped with JLB250T hydraulic cold drawn machine set LD120 cold rolled set. Powerful honing machine set, CNC skived and roller burnished machine set. OD polishing machine, lathe machine, and CNC sawing machines.
1.Hydraulic Cylinder Tube---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
1.Where is your factory?
Our factory is located in APEC Science &Technology Industrial park, Zhifu District,Yantai,Shandong,China.
2.What material do you have?
10#,20#,45#,25Mn,E355(Q345B,St52),27SiMn,etc.
3.When can I get the quotation ?
within 24 hours after we get your inquiry. If you are very urgent to get the price, please call us or
tell us in your email so that we will regard your inquiry priority.
4.Can we get free samples ?
Yes, of course.After price confirmation, you can require for samples to check our quality counter display.samplesarefree,you onlypay for freight charge is ok.
5.What is your terms of deliveryand payment terms?
We accept EXW, FOB, CIF, etc; payment terms with L/C or T/T(30% deposit+70% balance against B/L copy).You can choose the one which is the most convenient for you.
6.How about yourdelivery time?
Usually 15 working days after order confirmed& getting T/T deposit or original L/C
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
Sufficient Forging, Heating, Machining Equipment
-In-house Inspection Instruments for Quality Controlling
-Competitive Price & High Quality Assurance
-Fast, Effective and Efficient Services
-Directly supplier
-Experienced Professinonals on Communications
Tel +86-535-6835398
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