Commodity: ST52 cold drawn ready to hone tube

Type: Seamless

Standard specification and steel grade: DIN2391-2 ST52,EN10305-1 E355,E410,E460,C45E,25CrMo4,34CrMo4,42CrMo4, ASTM A519 SAE1020,SAE1026,SAE1045,SAE4130,SAE4140,etc.

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

Manufacture method: hydraulic cold drawn, cold rolled.

Delivery condition: BKS,GBK,NBK,BK,BKW.

ID tolerance: appointed by buyer. We suggest -0.5mm/-0.8mm for honing, and -0.8mm/-1.2mm for skived&roller burnishing.

W.T tolerance: +/-5% max.

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

Packing: in bundles tied with steel strips. Slightly internal&external oil coating. End plastic caps.

Shipment: effecyed by containers.

 Based on our facilities, the following services are available:

1. External surface polishing

2. Internal honing

3. Internal skiving&roller burnishing

4. Deep hole drilling

5. Machining

 We are ISO9001-2008 certified manufacturer of cylinder tubes and cylinder barrels including:

1. Hydraulic cold drawn seamless tubes suitable for honing or skiving&roller burnishing:40mm*30mm-325mm*300mm

2. Honed or skived&roller burnished tubes: 50mm*40mm-325mm*280mm

3. Hydraulic cylinder barrel: ID of 50mm-250mm with length of 2800mm max.

MOQ: 4 Tons for each size.

Payment: we accept T/T, L/C.

Warranty: 6 months after shipment.

Buyer's inspection or third party sinepction by BV or SGS before shipment are acceptable.