Commodity: deep hole drilled hollow bar

Steel grade: EN10305-1 42CrMo4,25CrMo4,34CrMo4,C45E,E355, ASTM A519 SAE1020,SAE1045,SAE4130,SAE4140, SAE4140,SAE4145,DIN2391-2 ST52, API 5CT J88,N80,L80,P110,etc.

Size range:89mm*50mm-325mm*120mm, W.T of 120mm max.

Manufacture method: hot rolled+deep hole drilled+machined.

Delivery condition: NBK(Normalized), Quenched+Tempered(Q+T)

Mechanical Stamp on each piece of hollow bar: as per customer's requirement.

Packing:In bundles tied with steel strips. Oil coating.

Shipment: effected by containers on FCL basis.

 Based on the manufacturing capacity, the following services are available:

1. Hydraulic cold drawing

2. External surface grinding

3. Machining

4. Deep hole drilling

5. Skiving&roller burnishing

6. Roughness honing

 We are manufacturer of cylinder tubes,cylinder barrels,and cold drawn special tubings, and we provide machining service.

Payment method: T/T., L/C, D/P. 

Delivery time: within 30 days.

Warranty: 1 year after shipment of products.

Invoicing: based on actual weight or theoretical weight as per customer's requirement.