It is the latest in a series of disputes the Trump administration has taken up against Beijing, the largest of which are the looming 25 percent tariffs on $50 billion in Chinese goods amid complaints the country is stealing US technology.
The frictions with the Asian giant, as well as the latest conflict will allies like Canada and the European Union have threatened to spill over into a global trade war.
The latest complaint, lodged by US manufacturers in Ohio and Tennessee, argues that China is dumping and unfairly subsidizing the steel cylinders, which allegedly land on the US market at below cost, creating unfair competition for US companies, including two that filed a complaint with the Commerce Department.
The complaint says China subsidizes production by 55 to 109 percent through a variety of programs including taxes, grants and export credits for nearly $90 million in exports.
The case also alleges dumping of the steel tanks by Taiwan and Thailand at lower rates.
Last year, the United States imported a little over $100 million in the propane cylinders from the three countries combined, according to the Commerce Department.
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