BUTT WELDING FITTINGS

Seamless and seam-welded butt welding fittings

Seamless butt welding fittings

Seamless butt welding fittings are produced from seamless tube and pipe by either a hot or cold forming process. Seamless butt welding fittings are available in standard sizes, as published in the relevant product tables, and in non-standard sizes. Standard size fittings are generally ex stock.

Seam-welded butt welding fittings

Seam-welded butt welding fittings are produced from hotrolled, annealed and pickled sheet or plate, formed into half shells or segments and longitudinally seam-welded. Seam-welded butt welding fittings are available in standard sizes, as published in the relevant product tables, and in non-standard sizes. Standard size fittings are generally ex stock.

Welding

Welding is carried out by Code qualified personnel (Boiler and Pressure Vessel Code, Section 9; Lloyds Register of Shipping; TÜV and others) whose qualifications are reguarly checked and approved. Established welding methods include automatic plasma arc, automatic. TIG, pulsed TIG, MIG and shielded-electrode techniques.

Terms of supply

Unless otherwise agreed, seamless butt welding fittings are supplied according to technical delivery condition DIN 86086. Seamwelded butt welding are supplied in the as-welded condition.

End preparation

Square cut and deburred, alternatively: bevelled as specified.

Marking

All butt welding fittings are marked with alloy name, outside diameter, wall thickness and heat number. Additional information like standard and alloy numbers can be added on request.