company information :Yan Tai Xinpeng Steel pipe Co., Ltd
Aisi standard Precision cold rolling seamless 4130 steel tube
Our company main product all kinds of cold drawn precision seamless steel tube and hydraulic precision cylinder tube .we have about 20 years experience of the steel production,and these products are used in hydraulic cylinder ,automobile ,oil drilling ,textil machinery ,etc.
product information:
Production | EN 10305 cold drawn sch80 chromed plated seamless steel tube |
Standard | DIN2391, DIN2445, EN10305, GB/T 3639, GB 8713 |
Inner Diameter | 30mm~250mm |
Wall Thickness | 0.5mm~18mm |
Material | 10#~45#,16Mn,Q195~Q345,ST35~ST52 |
Length | as customers required |
Surface treatment | As customers required |
Package | 1. bundle packing 2. marking as per customer's requests 3. paint on the pipe as per customer request 4. pipe caps as customer reques |
Min Order Quantity | According to customer's requirement |
Payment terms | L/C, T/T |
Contact | If you have any questions, please feel free to contact me. |
Delivery conditions | 1. NBK(+N) after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium 2. GBK(+A) after cold forming, annealing in non oxidizing medium protective gas 3. BK(+C) the final heat treatment after cold forming, therefore small steel pipe plastic, the plastic degree does not guarantee 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. 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 |
about the dimension
OD | GB/T3639(GB8713) | DIN2391(EN10305) | Our Tolerence | Best Quality |
4-30mm | ±0.10mm | ±0.08mm | ±0.05mm | ±0.02mm |
31-40mm | ±0.15mm | ±0.15mm | ±0.05mm | ±0.03mm |
41-50mm | ±0.20mm | ±0.20mm | ±0.05mm | ±0.03mm |
51-60mm | ±0.25mm | ±0.25mm | ±0.08mm | ±0.03mm |
61-70mm | ±0.30mm | ±0.30mm | ±0.10mm | ±0.05mm |
71-160mm | ±0.30mm | ±0.30mm | ±0.10mm | ±0.05mm |
Tolerance in WT | ±0.12mm | ±0.10mm | ±0.05mm | ±0.03mm |
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Process | Diameter | Length | Precision | Inner Hole Roughness |
Cold Rolled | 30-100mm | ≤12 m | H8-H10 | 0.4-1.6 |
Cold Draw | 30-250mm | ≤12 m | H8-H10 | 0.8-1.6 |
Honing | 40-500mm | ≤12 m | H8-H9 | 0.4-0.8 |
Rolling | 40-400mm | ≤7 m | H8 | 0.4 |
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Inner Diameter | H8 | H9 | H10 |
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30mm | ±0.033 | ±0.052 | ±0.084 | 5-30mm |
30-50mm | ±0.039 | ±0.062 | ±0.100 | ±0.080 |
50-80mm | ±0.046 | ±0.074 | ±0.120 |
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80-120mm | ±0.054 | ±0.087 | ±0.140 |
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120-180mm | ±0.063 | ±0.100 | ±0.160 |
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180-250mm | ±0.072 | ±0.115 | ±0.185 |
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250-315mm | ±0.081 | ±0.130 | ±0.210 |
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315-400mm | ±0.089 | ±0.140 | ±0.230 |
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packaging &delivery
•bundle packing
•marking as per customer's requests
• paint on the pipe as per customer request
• pipe caps as customer request
Standard packing with plastic caps and strapped bundles, standard weight approx 1500kg
Commercial length 2000~10500mm,custom lengths upon request
Surface protection
Application:
widely used in hydraulic system with precision steel tube, injection molding machine with precision steel tube, hydraulic press with precision steel tube, shipbuilding with steel tube, EVA foaming, hydraulic machinery, hydraulic cutting machine, shoe making machinery, hydraulic equipment, high pressure tubing, hydraulic tubing, card sets of joints, pipe joints, rubber machinery, forging machinery, casting machinery, engineering machinery, automotive high pressure steel pipe concrete pump, sanitation vehicle, automobile industry, shipbuilding industry, metal processing, military industry.
our services
1. Cargo track service during transporting and feedback service after cargo
2. Flexible terms of payment by
3. Big discount for repeat customers
4. Smooth delivering procedure
5. Payment Terms: T/T , L/C And so on.
our processing
our testing
1.100% PMI,Spectro Chemical Aanlysis Test for Raw Material |
2.100% Dimension & Visual Examination |
3. Mechanical Properties Test Include Tension Test,Flaring Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test ,Reversed Flattening Test |
4.100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test (ET or UT) |
5.Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor) |
6.Straightness Test (optional) |
7.Roughness Test (optional) |
8.Intergranular Corrosion Test(optional) |
our equirement
our certificate
FAQ
What is the advantage of our company ?
1.Rapid response on any inquiry.
2.Competitive price with best service .
3.Professional inspection department to guarantee quality.
4.ISO System 90012008certifa
5 Industry experience over20years.
6.Management Systems-Internal Software
7.Finished Product Inventory-More Than 5000 Tons.
8Raw Material inventory -Over 6000 Mertic Tons.
9Shipment of goods -More than 70 countries worldwide.
10.The most convenient transport and prompt delivery