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Commodity: 4145 machined hollow bar
Manufacture method: hydraulic cold drawn, machined, deep hole boring
Size range: 12mm - 400mm (OD), Length: 3000mm max.
Material: ST52 or other carbon steel grades like CK45,S45C, alloy steel like SAE4140, SAE4145,42CrMo4,20MnV6,etc.
Delivery condition: cold drawn, stress relieved,Q+T,hard chrome plated.
Chemical composition:
| Element | C | Si | Mn | P | S |
| Content (%) | 0.21 max | 0.55 max | 1.60 max | 0.025 max | 0.025 max |
Further treatment:
We can manufacture both cold drawn hollow bar with plain ends and machined hollow bar in accordance with drawings or design.
Packing: Oil coating and seaworthy export packing.
Shipping: 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. Drilling
We are of cold drawn mechanical tubings,precision tubes,cylinder tubes, as well as 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.
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