90° US-standard ORFS internal threaded flat surface

Japanese-made flanges

45° threaded flange

90° Japanese flange

90° English internal thread, 60° external conical surface, double hexagon

English internal thread with a 60° external conical surface and double hexagon

90° English internal thread spherical surface

English internal thread spherical surface

90° English internal thread, 60° external conical surface

45° English internal thread, 60° external conical surface.

English internal thread with a 60° external conical surface

90° English internal thread flat surface

45° English internal thread flat surface

English internal thread flat surface

English tapered pipe external thread

British pipe external thread, flat surface, O-ring seal