GB Standard flange

GB/T9113 ~ GB9124-2000 standard flange

GB/T9113.1 ~ GB/T9113.26-1988 Integral steel pipe flanges (1.6 ~ 42.0Mpa)

GB/T9113.1 ~ .2 Integral steel pipe flanges (flat) (1.6 ~ 2.0Mpa)

GB/T9113.3 ~ .8 Integral steel pipe flanges (convex) (1.6; 2.5; 4.0; 2.0; 5.0; 10.0Mpa)

GB/T9113.9 ~ .15 Integral steel pipe flanges (concave surface) (1.6; 2.5; 4.0; 5.0; 10.0; 15.0; 25.0; Mpa)

GB/T9113.16 ~ .20 Integral steel pipe flanges (tongue and groove face) (1.6; 2.5; 4.05.0; 10.0Mpa)

GB/T9113.21 ~ .26 Integral steel pipe flanges (Ring Joint) (2.0; 5.0; 10.0; 15.0; 25.0; 42.0Mpa)

GB/T9115.1 ~ .36-1988 plane welded steel pipe flanges (0.25 ~ 42.0) Mpa

GB/T9115.1 ~ .5 (plane) welded steel pipe flanges (0.25; 0.6; 1.0; 1.6; 2.0; Mpa)

GB/T9115.6 ~ .16 (convex) welded steel pipe flanges (0.25; 0.6; 1.0; 1.6; 2.5; 4.0; 2.0; 5.0; 10.0; 15.0; 25.0; Mpa)

GB/T9115.17 ~ .23 (uneven surface) welded steel pipe flanges (1.6; 2.5; 4.0; 5.0; 10.0; 15.0; 25.0; Mpa)

GB/T9115.24 ~ 30 (tongue and groove face) welded steel pipe flanges (1.6; 2.5; 4.0; 5.0; 10.0; 15.0; 25.0; Mpa)

GB/T9115.31 ~ .36 (ring joint) welded steel pipe flanges (2.0; 5.0; 10.0; 15.0; 25.0; 42.0Mpa)

GB/T13402-1992 large diameter steel tube