Process of Subcontract in MM

Sub-contract business process:
You want to buy material from the supplier (processed material/ assembled item) , but for some reason (quality of certain item / price ) you will give some component to vendor .
Vendor shall process the item / use the item provided & supply the final item.

SAP process:
1.Create the finished goods material code.
2.Maintain the BOM for the material.
3.Create PO with item category as "L" .
4.Issue material to vendor with movement type 541
5.Receive the material against the PO with movement type 101.
6.MIRO to account for vendor's invoice for the service charge& material used by him.

Can anybody tell me how a process has to be given to subcontracting?
Suppose, I have 3 operations 1)weaving 2)dyeing 3)cutting & packing
if no 2 process (i.e Dyeing) has to be given to subcontracting, what process should i follow ?

Vijay

The following process to be followed for subcontracting.
1. Item code(material master) to be created at the stage of before dyeing.
2. Item code(material master) to be created after Dyeing as subcontracted item.(F30)
3. Bill of material to becreated for the material(2) calling for material(1)
4. Inforecord and source list to be created for material(2) with the corresponding vendor
5. PO to be released for material (2)
6.Along with PO the material(1) to be issued to vendor
7.On receipt of material when GR is made the stock with vendor will get updated.