This type of flanges are bored only on one side and these flanges are used for small bore lines only. These flanges are suitable for small-size high-pressure pipelines. The bore of the pipe and the bore are the same and thus it has good flow characteristics.
This type of flange will be welded to the ID of the pipe and counterbored slightly larger than the O.D. of the pipe to allow the pipe to be inserted and welded in place.
ASTM A182/182M ASME SA182/182M | F 304, F304L, F304H, F310, F316, F316L, F316H, F347, F347H, F317, F317L, F321, F324H, F316Tl, F347, F347H, F51, F60, F53, C276, C22, MONEL 400, INCONEL 625, INCONEL 825, TITANIAUM AND ETC.
JIS G3214 | SUS F304, SUS F304L, SUS F304H, SUS F316, SUS F316L, SUS F316H, SUS F347, SUS F347H, SUS F317, SUS F317L, SUS F321, SUS F324H
DIN 10222-5 | 1.4301, 1.4306, 1.4307, 1.4541, 1.4571, 1.4401, 1.4404, 1.4410, 1.4438, 1.4450, 1.4462