The National Marine Manufacturers Association (NMMA) has urged its boatbuilder members to get in touch about possible hikes in sheets of aluminum. The US trade association said in its daily newsletter that the US Department of Commerce has initiated an anti-dumping case on common alloy aluminium sheet from China that could result in countervailing duties.

“The case covers imports of aluminium sheet from China in the 1XXX-, 3XXX- and 5XXX-series alloy,” said the notice. “5XXX-series aluminum is magnesium-alloy-based and is often used in marine applications due to its corrosion-resistance.”

NMMA said that import duties will increase by 57%. “The actual duties could be much higher when the countervailing duties (anti-subsidy) are included. China is the largest source of foreign imports of this product,” said the notice. “The purpose of the case is not only to raise the cost of Chinese aluminium sheet, but also to raise the prices of aluminium sheet in the domestic market as a whole.”

The NMMA said it would participate in a hearing on December 21, where witnesses from the domestic industry can testify about the harm they are experiencing. “It also is a chance for the US importers and end-users of the merchandise to testify why imports are not harming domestic production.”

The trade association warned that the case is “moving very quickly.” It said it has formed a committee of affected members. Thom Dammrich, NMMA president, will lead the committee.