* Hot-rolled coil rises 3 pct to five-week high, rebar up 2 pct
* Stronger auto market spurring demand for flat products
* Dalian iron ore also hits five-week peak (Updates prices)
By Manolo Serapio Jr
MANILA, Oct 12 (Reuters) - Chinese steel futures climbed to five-week highs on Wednesday, supported by expectations that traders would replenish stockpiles after a week-long holiday amid brisk sales of cars and appliances.
Prices of flat steel products, used in transport and appliances, have outpaced gains in long products, used in construction.
"We are seeing better performance in the automotive and home appliance sectors than construction and this is evidenced by higher flat product prices," said Richard Lu, analyst at CRU consultancy in Beijing.
China's auto market, the world's largest, has rebounded strongly since October last year, when the central government cut sales tax on vehicles with engines of 1.6 litres or smaller to speed up slowing sales in a weakening economy.
The most-traded hot-rolled coil (HRC) contract on the Shanghai Futures Exchange closed up 3.1 percent at 2,711 yuan ($407) a tonne, after rising as far as 2,725 yuan, its loftiest since Sept. 2.
HRC is used to make cold-rolled coil steel that goes into making car components and electrical products.
Rebar, used in construction, ended 2.1 percent higher at 2,358 yuan per tonne, just off the day's peak of 2,360 yuan, its strongest since Sept. 7.
A drag on construction demand for steel is China's renewed efforts to restrict home purchases to rein in rising prices, particularly in big cities.
A wave of restrictions imposed on housing markets in major Chinese cities last week have unnerved some buyers and developers, cutting the area of new homes sold in places such as Beijing and Shenzhen by more than half during the week-long National Day holiday.
Overall, steel inventory among Chinese traders was down 2.9 percent on Sept. 30 compared to the previous week, according to Morgan Stanley.
There wasn't a lot of steel restocking that happened before China's National Day break and it could happen now, with the holiday over and inventories low, said CRU's Lu.
Gains in steel prices helped lift raw material iron ore on the Dalian Commodity Exchange by 2.8 percent to close at 428 yuan per tonne. It touched 430 yuan earlier, a level last seen on Sept. 6.
Rising futures has increased activity in the physical market this week, raising spot iron ore prices to a two-week peak.
Iron ore for delivery to China's Tianjin port .IO62-CNI=SI climbed 1.3 percent to $56.50 a tonne on Tuesday, a level last seen on Sept. 23, according to The Steel Index.
$1 = 6.6685 Chinese yuan Reporting by Manolo Serapio Jr.; Editing by Tom Hogue and Biju Dwarakanath