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Costin Welding And Fabrication, Mobile Welding

Mobile and shop welding services based out of Portsmouth New Hampshire and serving all of New England.
Open 24 hours
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Our mobile welding truck is available 24hrs for emergency and roadside repairs. We can be on your site for repairs keeping you moving!

Yes we work in the snow! If you plow this winter and break something we can be on site for emergency repairs 24/7!

Our mobile welding truck makes it possible to weld on site 24hrs of the day! If you have a piece of equipment that is impossible or very costly to move on site welding will save you time and money! Or if you are building a home or large project that requires welding to be done on site we have you...

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Building a custom home or a remodel? Give us a call! From beams and columns to custom railings and furniture we have you covered!


2 weeks ago
Will is awesome. A rare find in that he’s a contractor who comes when he says he will, is affordable and efficient. He fabricated the railing for our deck and made it awesome. Our old railing was a hodgepodge of wood and glass and it was an eyesore for us for the first 10 years we owned our house. Our new stainless steel railing with cabling is minimalistic and modern and it makes the deck look bigger. We couldn’t recommend him more!
- Don N
4 months ago
Can’t say enough good things about Costin Welding. Whenever I call for a repair Will gets to me as fast as he can and always does quality work!
- Neil C
a year ago
Had some custom railings built by Costin Welding. I wasn’t sure exactly what I wanted but the owner gave me great ideas of what would work with my home! Railings came out better than I could imagine!
- Tim O

On site and shop welding services

Costin welding offers mobile and shop welding of Steel,stainless steel and aluminum! From heavy equipment to aluminum dock repairs and metal railings  we have you covered! Our shop is in Portsmouth NH. We also provide welding services in Portland Maine,Concord New Hampshire and all of New England! 24 hr emergency welding services available! 

Contact Us


Call now
  • (603) 531-8214

Business Hours

Mon:Open 24 hours
Tue:Open 24 hours
Wed:Open 24 hours
Thu:Open 24 hours
Fri:Open 24 hours
Sat:Open 24 hours
Sun:Open 24 hours
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