Britain appears to have done this to itself, despite the EU trying to lower the impact of goods dumping and raise duties, Britain kept blocking these reforms.
Important quotes from:
https://fullfact.org/europe/is-uk-calling-for-lower-eu-duties-chinese-steel/"Britain has objected to the European Commission’s proposals to raise the duty imposed on Chinese steel imports. That’s been indicated by the Business Secretaryand a Council memo"
" In 2013, the European Commission submitted plans intended to discourage what it called certain “unfair trading practices”. These would allow the EU to impose higher import duties in cases where it believes a government is subsidising exports in a way that undermines a raw materials industry in Europe, such as steel.
Britain has been accused by both trade bodies and other European officials of blocking these reforms."
"Business Secretary Sajid Javid has also said the government doesn’t wish to see “disproportionate” duties introduced, arguing that this could have a negative impact on companies which use, rather than manufacture, steel in the UK."