The only reason they get their orders moved ahead is that they are better customers.  They pay more, and they order more.  Of course you're going to give preference to your best customers.
I agree leanan, if the chinese want to pay higher prices sell it to them.  That being said if prices go up other comapnies will produce pipe.  I have not seen any shortage of drill pipe in the gulf and I just asked my company man if it is hard to get and he said "no why I can get as much as I want."  So is this chinese thing one company got burned on one deal or an industry thing?  I see racks in Mobile and Fourchon and Lafayette FULL of drill pipe.  If there was a shortage would all that pipe not be in use?
oilrig medic -

Drill pipe is the small volume end of oilfield tubulars. It is only replaced when it is completely worn out, and so has a relatively long life.

CASING and liner runs are the big dollar and volume items, as they are used in EVERY well and LEFT IN THE GROUND as part of the well construction process. Thus they are consumables, whereas drill pipe is reusable.

FWIW, Rockdoc over at PO.com (I think he's a petroleum geologist) said shortages are afflicting the entire industry:

Middle East (Saudi, Qatar) are paying top dollar for pretty much anyone breathing to work in the oil/gas fields and on rigs

Tubulars are in high demand. Mill runs are now 7-8 months out

Rigs both offshore and onshore are in short supply, rig rates have nearly doubled in the last year. Most rigs are now on long term contracts.

Apparently the McDonalds in Fort McMurray had to close because the tar sands were employing pretty much everyone...they can't get burger flippers.

Sounds like the illegal immigrants have a place to go! flipping burgers and etc.
From:
http://thefraserdomain.typepad.com/energy/2006/04/peak_oil_a_shat.html

"As Fort McMurray's population has increased to 61,000, from 33,000 in 1996, housing has become in such short supply that the average mobile home now sells for $277,000 and people are renting couches for $500 a month

The crowding and labor shortages pushed Canadian Natural Resources to build a jet runway long enough to accommodate Boeing 737s to allow workers to commute to their giant new Horizon project. Shell Canada has built a giant pipeline to transport diluted oil sand bitumen hundreds of miles south to a new upgrading plant outside Edmonton. "

I don't think too many illegal burger flippers can afford to fly in / fly out - or pay $500 a month to sleep on a couch...

Holy Heisenberg.  A quarter of a million dollars for a mobile home?  And I thought real estate prices were bad here...
Not quite. What happened is that the steel companies signed a deal at one price, the price moved up, and they defaulted on the deal.
That isn't legal. So, don't deal with the steel companies that aren't upholding their contracts.
Hey, Mexico may have done the same thing to the Koreans, for all I know. Maybe Mexico contracted to sell oil to Korea at 50$ a barrel, and then sold it to the Chinese for 60$ a barrel. Turnabout is fair play.