Follow us on our LinkedIn account "Grotnes Inc." https://www.linkedin.com/company/grotnesinc or visit our website at www.grot ... nes.com for all your Metal Forming Needs. We have solutions for your Expanding, Shrinking, Roll forming & Spinning needs. Our primary industries are Aerospace, Automotive, Ridged Packaging, Oil & Gas, Tanks, Appliances, Forging read more