Supplier of alloy pipes, fittings and flanges for extreme temperatures


Stratstan carries one of the most comprehensive stocks in the world of flanges in Chrome-Moly and Low-Temp 3½% Nickel alloys.

Our stock range includes finished RF and RTJ Weld Neck, Blind, Socket Weld & Slip-On flanges.

In addition to finished flanges, we carry a large stock of Forgings & Semi-Finished flanges, providing the ability to machine various types & sizes of flange, including “specials”, on very short delivery.

Flanges are stocked in accordance with the following specifications and standards:

Material Specifications:

Chrome-Moly – ASTM/ASME A/SA182 F11, F22, F5, F9 & F91
Low-Temp 3½% Nickel – ASTM/ASME A/SA350 LF3

Dimensional Standard:

ASME B16.5, B16.47 & B16.36

Certification Standard: 

EN10204 3.1 (Additional testing and certification can be arranged when required)