To ban North Korea from purchasing tanks and aircraft is ridiculous. It lacks the funds for the purchase.
North Korean nuclear program is up and running. It could do with additional supplies which, at any rate, would be flown in by charter planes from Pakistan not subject to search. Cargo inspections might interdict the exports of conventional weapons from North Korea, but those are not critical. Few nations are likely do perform such inspections, and North Korea will easily circumvent them. Unscrupulous businesses from China and Russia, but also from other countries will provide raw materials for the North Korean weapons programs. The world market is just too big to control it.
A threat of freezing the funds of companies dealing with North Korean military programs is empty. Money in offshore accounts moves in seconds. No one uses legitimate companies for illegal transactions. By the time the authorities will try to block the accounts, there will be nothing to block.
The UN resolution which contains no economic sanctions and excludes the use of force is a clear victory for North Korea.