Commodity: 4130 machined hollow bar

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

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

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

Delivery condition: Stress relieved,annealed,normalized,quenched+tempered.

Packing: Oil coating and seaworthy export packing.

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

The following services are available:

1. External surface machining

2. External surface polishing

3. External surface grinding

4. Hard chrome plating

5. Deep hole boring

6. Bore honing

7. Skiving&roller burnishing

8. Drilling

9. Machining as per design/drawing.

We are manufacturer of:

1. Hydraulic cold drawn mechanical tubingsor precision tubes: 73mm*2mm-356mm*50mm.

2. Hydraulic cold drawn (and honed or skived&roller burnished) cylinder tubes: 73mm*63mm-356mm*300mm.

3. Cylinder barrel: cold drawn+honed or skived&roller burnished+machined  or hot rolled+externally machined+deep hole bored+honed or skived&roller burnished+machined hydraulic cylinder barrels, ID of 70mm-250mm with length of 2800mm max, machining as per design or drawing.

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.