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Commodity: ST52 precision honed cylinder tube

Standard&material: EN10305-1 C45E and equivalent like ASTM A519 SAE1045 or other materials like DIN2391-2 ST52,   EN10305-1 E355,25CrMo4 ,34CrMo4,42CrMo4,ASTM A510 SAE1020,SAE1026,SAE4130,SAE4140,etc.

Size range: 40mm*30mm - 325mm*300mm

Manufacture method: hydraulic cold drawn+cold rolled, hydraulic cold drawn

Delivery condition:

Treatment method of internal surface (bore): honing

Roughness (Ra) of internal surface: 0.35um max.

ID tolerance: H8,H9,H10.

W.T tolerance (eccentricity) : +/-5% max.

Straightness: 0.5mm/1000mm max, 0.8mm/1000mm max, 1.2mm/1000mm max depending on different size and length.

Chemical composition:

Packing: in bundles tied with steel strips.

Slightly internal and external oil coating for anti-rust protection.

End plastic caps covering both ends.

External packing to be confirmed.

Marking on each tube: to be confirmed.

Shipping: by containers.

Based on our manufacturing facilities and expertise, following services are available:

1. Internal honing

2. OD grinding

3. Deep hole drilling

4. External surface polishing

5. External surface machining

6. End machining

We are ISO9001-2008 certified manufacturer of tubes for hydraulic cylinders and hydraulic cylinder barrels. The annual capacity of cylinder tubes including cold drawn seamless tubes ready to hone,honed tubes, and skived&roller burnished tubes is 16000 tons.

Payment method: we accept various payment method like T/T, L/C, D/P,etc.

Delivery time: generally, we can ensure 20 days' delivery time for cold drawn seamless tubes,50 days' delivery time for skived&roller burnished tubes, and 70 days for honed tubes.  

Trade term: we accept FOB,CFR,CIF,and DAP.

MOQ: 3 tons for each size. Less quantity can be negotiated for supply.

Third party inspection or customer's inspection is acceptable.