Home > Products > Hydraulic cylinder tube > 25CrMo4 cold drawn unhoned seamless tube
25CrMo4 cold drawn unhoned seamless tube
- 12000 Ton / Tons per Month
- Shanghai Port China for 25CrMo4 cold drawn unhoned seamless tube
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Product Details
Thickness: | 5, 50 | ||||
Section Shape: | Round | Outer Diameter: | 40 - 325 mm | Place of Origin: | Jiangsu, China |
Secondary Or Not: | Non-secondary | Application: | Other, Hydraulic cylinder barrel | Technique: | Cold Drawn |
Certification: | Other, ISO9001-2008 | Surface Treatment: | Other, Internal skiving and roller burnishing | Special Pipe: | Thick Wall Pipe |
Alloy Or Not: | Is Alloy |
Product Description
25CrMo4 cold drawn unhoned seamless tube is a kind of alloy steel seamless precision steel tubes with negative ID tolerance for further honing or skiving&roller burnishing. This kind of tube will be used to produce hydraulic cylinder barrels after further internal honing or internal skiving&roller burnishing.
Commodity: 25CrMo4 cold drawn unhoned seamless tube
Standard&material: EN10305-1 25CrMo4 and other steel grades like E355,34CrMo4,42CrMo4,DIN2391-2 ST52,ASTM A519 SAE1020,SAE1026,SAE1045,SAE1541,SAE4130,SAE4140,etc.
Size range: 40mm*30mm-325mm*300mm
Manufacture method: cold rolled, hydraulic cold drawn
Delivery condition:
+C | +LC | +SR | +A | +N |
BK | BKW | BKS | GBK | NBK |
cold drawn/hard | cold drawn/soft | stress relieved | annealed | normalized |
ID tolerance: appointed by buyer. Generally, we suggest -0.4mm/-0.7mm for honing, -0.7mm/-1.0mm for skiving&roller burnishing.
OD tolerance: as per EN10305-1
W.T tolerance (eccentricity): +/-5%
Straightness: 0.5mm/1000mm max, 0.8mm/1000mm max, 1.2mm/1000mm max depending on different size and length.
Chemical composition - 25CrMo4:
Element | C | Si | Mn | P | S | Cr | Mo |
Content (%) | 0.22-0.29 | 0.40 max | 0.60-0.90 | 0.035 max | 0.035 max | 0.90-1.20 | 0.15-0.30 |
Packing method: in bundles tied with steel strips.
Slightly internal and external oil coating for anti-rust protection.
End plastic caps covering both ends of tube.
Marking on each tube: to be confirmed.
Mechanical stamp on each tube: to be confirmed.
Shipping: by containers.
Based on the machines and manufacturing facilities we have, the following services can be provided:
1. Internal honing
2. External surface polishing
3. OD grinding
4. deep hole drilling
5. End machining
6. Internal threading
7. End welding
We are ISO9001-2008 certified manufacturer of hydraulic cylinder tubes and cylinder barrels with annual capacity of 12000 tons.
Payment method we accept:
30% deposit,balance before shipment.
30% deposit,balance against copy of B/L.
30% deposit,balance against L/C at sight.
Delivery time: 30 days for CDS tubes,50 days for skived and roller burnished tubes, 60 days for honed tubes.
MOQ: 4 tons for each size.
Trade term we accept: FOB,CFR,CIF,DAP.
Third party inspection or customer's inspection is acceptable.
Contact Us
- Changzhou Chengxin Metal Products Co., Ltd.
- Contact nameJianjun Chen
- Phone86-519-88771678
- AddressXinnan Village,Yaoguan Town,Wujin Dist Changzhou,Jiangsu
Bimetal Composite Tube | Boiler steel tube | Hydraulic cylinder tube | Machined products |
Machining Service | New Products | Seamless rectangular&Square tube |
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