Metal tubing is a popular replacement for wine tubes that has been used for decades.
It has a lower melting point, but the metal tube can be easily repaired, which makes it a popular choice for commercial wine makers.
But there are some concerns that the material will break or even crack if it is mishandled, which could result in a more expensive repair.
A recent report from the US Geological Survey warns that the metal is not a good material for wine-making.
The USGS said the metal tubing industry in the United States is vulnerable to corrosion and failure.
It warned that when used properly, metal tubing can be a durable and reliable material.
But the USGS also warned that it is not always safe to use metal tubing on wine production equipment.
A USGS report last year said that some manufacturers have failed to install enough of the tube’s insulation to stop the metal from cracking and cracking in contact with the wine.
But a USGS study also said that the majority of wine production facilities have adequate insulation.
It also said some manufacturers do not consider the need for a safety assessment when using metal tubing.