Commodity: 4140 seamless hydraulic honed tube

Standard specification: EN10305-1 25CrMo4,34CrMo4,42CrMo4,and equivalent standard&grades like ASTM A519 SAE4130,SAE4140,SAE4145,etc.

Size range:70mm*60mm*325mm*300mm

Manufacture method: Hydraulic cold drawn

Delivery condition:BKS,BKW,GBK,NBK.

Bore treatment: honing or skiving&roller burnishing

ID tolerance: H8, H9, or as per customer's requirement

Roughness of internal surface: 0.35um max.

Straightness:0.5mm/1000mm max.

Packing: in bundles tied with steel strips. Internal and external oil coating. End plastic caps. External packing by knit bags.

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

Based on our facilities,the following services are available:

1. Honing or skiving&roller burnishing

2. Polishing

3. Machining as per drawing

4. Deep hole boring

5. Grinding

We are specialized manufacturer of cold drawn mechanical tubing,precision tubes,(honed or skived&roller burnished) cylinder tubes, as well as cylinder barrels.

Delivery time: 40 days in general.

Warranty and guarantee: 6 months after shipment of cargo.

Payment method: L/C, T/C, D/P are all acceptable.