UK Steel says rising competition and falling prices are damaging firms.
The call for action comes days after Thai steel firm SSI halted production at its Teesside plant due to falling demand, putting 2,000 jobs at risk.
Among other measures, UK Steel wants the government to lower business rates and relax emissions targets.
In a statement it said: "The UK steel sector is vital to the success of manufacturing, employing 30,000 well-paid and highly skilled people, often in areas with higher-than-average unemployment.
"In 2013 it made a Â£9.5bn contribution to the UK economy and had a Â£4.9bn export value."
John Park from the Community trade union told the BBC that it was having trouble getting through to the company's management in Thailand.
"A lot of the things that are happening at SSI are decisions that are being taken thousands of miles away," he said.
"I'm not sure they know themselves exactly what the solution looks like. We would hope that we can find a positive solution to this situation that secures steelmaking on Teesside and supports the community."
During its conference in London on Thursday, UK Steel is expected to outline a number of steps which the government can take in the short-term to "demonstrate its commitment to the UK steel industry".
UK Steel, which is part of the manufacturing trade body EEF, is urging the government to encourage the use of British-produced steel in major infrastructure projects.
It also asked the government to consider relaxing rules on emissions targets for manufacturers - which UK Steel said would cost the steel industry Â£500m by 2019.
A spokesperson for UK Steel told the BBC that the government's business rates are much higher than competitors' in France and Germany - sometimes up to 10 times higher.
UK Steel also said that bills for industries heavily reliant on energy usage were too high and that a review of these rates - announced in the Budget - should be brought forward.
The call comes days after business minister Anna Soubry said that, because of strict EU rules, the government is "limited" in what it can do to help the ailing Teesside steel plant owned by SSI .
About 2,000 jobs are under threat and unions say they have not been told what the current pause in production means.
Contractors who supply workers and equipment to the site have been seen withdrawing their property.
On Wednesday, Stockton South MP James Wharton told the BBC: "At this stage things are still ongoing. Things are very very difficult, I don't want to give false hope about the challenges that are before us for this company. "

He defeated Dr Alasdair McDonnell in a vote at the party's annual conference in Armagh by 172 votes to 133.
Foyle MLA Mr Eastwood, 32, is the SDLP's youngest member of the Northern Ireland Assembly and becomes the sixth leader of the party.
South Belfast MLA Fearghal McKinney has been voted the party's new deputy leader.
Mr McKinney received 158 votes, with Upper Bann MLA Dolores Kelly getting 138.
Read more: Colum Eastwood's 10-year rise to SDLP leader
After the leadership result was announced, Mr Eastwood paid tribute to Dr McDonnell, who had led the party since 2011.
"Alasdair has stretched every fibre of his being for this party," he said.
"He is a man who has given the work of two lifetimes for the good of this party and the community he serves."
Mr Eastwood also pledged he would work together as a team with Mr McKinney.
Under his leadership, he added, the SDLP's "principal conversation" would be "about shaping this country for the next 20, 30 and more years".
Among his first tasks as leader will be to make key strategic decisions over continuing negotiations between Northern Ireland's main parties aimed at resolving the current political crisis at Stormont.
Dr McDonnell, the MP for South Belfast, told party delegates he had "given his all and a little bit more" during his time at the helm.
He added: 'I wish to offer Colum every best wish as he continues, I hope, to renew, regenerate and rebuild the party."
UK steel manufacturers will urge the government to take steps to protect the industry in the face of what they describe as a "perfect storm".
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Colum Eastwood is the new leader of the Social Democratic and Labour Party (SDLP).