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Commodity: Machined hollow bar for drill collar
Steel grade: ASTM A519 SAE4130,SAE4140,SAE4145H, EN10305-1 25CrMo4,34CrMo4,42CrMo4,etc.
Manufacture method:hydrualic cold drawn, deep hole drilling, deep hole boring,machining
Delivery condition:Normalized, Quenched+tempered.
Size: 70mm*5mm-325mm*160mm
Machining as per drawing.
Packing: oil coating, external packing by wooden boxes as oer requirement of customer.
Shipment: we suggest shipment effected by containers on FCL basis.
Based on the manufacturing capacity, the following services are available:
1. Surface Machining
2. Machining as per drawing
3. Deep hole drilling
4. Deep hole boring
5. Honing
6. Skiving&roller burnishing
We are specialized manufacturer of cylinder tubes,cylinder barrels,and cold drawn special tubing and we also provide services like machining, deep hole drilling, and deep hole boring,etc.
Guarantee&warranty: 1 year after shipment of cargo.
Customized design is acceptable.
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