All welding is done with cryogenic source inert gas welding methods. HIS uses ASME qualified welders and ASME procedures designed to provide the best possible welds. Automatic or semi-automatic positioning fixtures are used on tubing and fittings. Interior surfaces are smooth, even and uniform.
HIS tubing conforms to ASTM A-269, A-262 Practice "E" requirements unless otherwise specified.
Our fittings conform to ASTM A269 and A270 and can be supplied in 304/304L or 316/316L. Fittings come with a standard mill finish. Other finishes available: mechanical polish ID/OD (#7), mechanical polish OD (#5), and electropolished ID.
