E355 Hydraulic cylinder tubing

Hydraulic cylinder tubing is used to produce hydraulic cylinder barrels. E355 is a kind of steel grade that are one of the most widely used in hydraulic cylinder industry.

1. Commodity: E355 hydraulic cylinder tubing 2. Types: cold drawn precision seamless tube ready to hone, honed tubes, skived and roller burnished tubes

3. Manufacture method: cold drawn, cold rolled

4. Internal surface treatment method: honing or skiving and roller burnishing.

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

6. Standard&material: EN10305-1 E355,C45E,34CrMo4,42CrMo4,DIN2391-2 ST52,ST52.3,ST52.4,ASTM A519 SAE1020,SAE1045,SAE1026,SAE4130,SAE4140,etc.

7. Delivery condition: BK, BKW, BK+S, GBK, NBK.

8. OD tolerance: as per DIN2391-1, EN10305-1, ASTM A519 or as per customer's requirement.

9. ID tolerance: for ready to hone tubes, ID tolerance should be given or appointed by customer. For honed tubes or skived and roller burnished tubes, ID tolerance can be H7,H8,H9,H10 or given by customer.

10. Wall Thickness tolerance (eccentricity): +/-5%

11. Ovality of OD: 0.15mm max for tubes with OD below 150mm, 0.25mm max for tubes with OD above 150mm.

12. Straightness: 0.5mm/1000mm max for tubes below 3000mm, 0.8mm/1000mm max for tubes between 3000mm and 6000mm, 1.2mm/1000mm for tubes above 6000mm.

Tolerance of ID of skived&roller burnished tubes:

Tubes will be packed in bundles tied with steel strips, internal and external oil coating for anti rust protection, end plastic caps will be added to both ends.

We manufacture the following hydraulic cylinder tubes:

Cold rolled / hydraulic cold drawn seamless tubes ready to hone: 40mm*30mm-325mm*300mm

Honed seamless tubes: 40mm*30mm - 480mm*450mm

Skived and roller burnished tubes: 76mm*63mm - 300mm*280mm

Payment method: 30% deposit,balance before shipment or against copy of B/L or L/C at sight.

MOQ: 4 tons for each size.

Warranty: 1 year after shipment of tubes.

Third party inspection or customer's inspection is acceptable.

Addtional inspections and tests are acceptable.