SQL & PL/SQL :: Show Or Select Data Based On 2 Criteria

I have a complex requirement to be resolved, i have one table of quantities from where i want to show or select the data based on 2 criteria.

1) if the ps_qty is greater than 1000 then there should be two lines , like the qty should not be displayed greater than 1000, instead it should be lesser than 1000.
2) The weight should not be more than 50,000, it should be less than 50000 if its more it should be displayed as 2 lines.

The following is the test case.

CREATE TABLE OW_STAG_SHIP (PS_CODE VARCHAR2(12),PS_DESC VARCHAR2(30),PS_QTY NUMBER,PS_WT NUMBER);
INSERT INTO OW_STAG_SHIP VALUES ('A','AAA',400,30000); -- this will be displayed as its because qty and wt are ok
INSERT INTO OW_STAG_SHIP VALUES ('B','BBB',1100,4000); --Need to be displaed in two lines as qty is more than 1000
INSERT INTO OW_STAG_SHIP VALUES ('C','CCC',2500,6000); --Need to be displayed in three lines as qty is more
INSERT INTO OW_STAG_SHIP VALUES ('D','DDD',600,60000); --Need to be displaed in two lines as wt is more.
select * from ow_stag_ship

PS_CODEPS_DESCPS_QTYPS_WT
AAAA40030000
BBBB11004000
CCCC25006000
DDDD60060000

Output what i want is as below

PS_CODEPS_DESCPS_QTYPS_WT
AAAA 40030000
BBBB10002000
BBBB 1002000
CCCC10002000
CCCC10002000
CCCC 5002000
DDDD 500 50000
DDDD 100 10000