Commodity: sae4140 machined hollow bar

Manufacture method: hydraulic cold drawn, machining, deep hole boring

Size range: 12mm - 400mm (OD), Length: 3000mm max.

Material: ST52 or other carbon steel grades like CK45,S45C, alloy steel like SAE4130,SAE4140,SAE4145, 42CrMo4,20MnV6,etc.

Delivery condition: cold drawn, stress relieved,Normalized,Q+T,hard chrome plated.

Further treatment:

We can manufacture both cold drawn hollow bar with plain ends and machined hollow bar in accordance with drawings or design.

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

Shipping: We suggest shipment effected by containers.

The following services are available:

1. External surface machining

2. External surface polishing

3. External surface grinding

4. Deep hole boring

5. Bore honing

6. Skiving&roller burnishing

7. Machining as per drawing/design.

We are manufacturer of cold drawn mechanical tubing,precision tubes,cylinder tubes, cylinder barrels,and machining service provider.

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

Delivery time: within 50 days.

MOQ: 3 tons for each size.

Trade term: FOB,CFR,CIF,DAP.

Third party inspection or customer's inspection is acceptable.