Commodity: Honed steel tube for telescopic cylinder

Size: 60mm*50mm-325mm*250mm

Length: 2800mm max

Standard specification: EN10305-1 E355,C45E,25CrMo4,34CrMo4,42CrMo4,DIN2391-2 ST52,ASTM A519 SAE1020,SAE1026,SAE1045,SAe4130,SAe4140,etc.

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

Internal surface treatment: honing, skiving&roller burnishing, deep hole drilling.

External surface treatment: machining

Roughness of internal surface: 0.35um max for honed surface, 0.25um max for skived&roller burnished surface.

Packing: in bundles tied with steel strips. Internal and external oil coating. End plastic caps.

Shipping: we suggest shipment effected by containers on FCL basis.

Marking: as per customer's requirement.

The following services are available:

1. Machining including threading

2. Grinding

3. Deep hole drilling

4. Honing

5. Skiving&roller burnishing

 We are ISO9001-2008 certified manufacturer of cold drawn special tubings,cylinder tubes and cylinder barrels including:

1. Hydraulic cold drawn seamless tubes suitable for honing or skiving&roller burnishing: 40mm*30mm-325mm*300mm, ID tolerance given by customer.

2. Honed or skived&roller burnished tubes: 60mm*50mm-325mm*250mm

3. Hydraulic cylinder barrel as per technical drawing: ID of 50mm-250mm, length of 2800mm max.

Warranty: 1 year after shipment of products.

Payment: we accept payment method of T/T or L/C.

Delivery time: For tubes, delivery time is about 30 days-50 days, For cylinder barrels, the delivery time is about 40 days-60 days.