701 gb/t 9116.12-1988 pn 2.5mpa(25 bar) 凹凸面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with male and female face for pn 2.5mpa (25 bar)

　　702 gb/t 9116.13-1988 pn 4.0mpa(40 bar) 凹凸面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with male and female face for pn 4.0mpa (40 bar)

　　703 gb/t 9116.14-1988 pn 5.0mpa(50 bar) 凹凸面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with male and female face for pn 5.0mpa (50 bar)

　　704 gb/t 9116.15-1988 pn 10.0mpa(100 bar) 凹凸面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with male and female face for pn 10.ompa (100 bar)

　　705 gb/t 9116.16-1988 pn 1.6mpa(16 bar) 榫槽面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with tongue and groove face for pn 1.6mpa (16 bar)

　　706 gb/t 9116.17-1988 pn 2.5mpa(25 bar) 榫槽面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with tongue and groove face for pn2.5mpa (25 bar)

　　707 gb/t 9116.18-1988 pn 4.0mpa(40 bar) 榫槽面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with tongue and groove face for pn 4.0mpa (40 bar)

　　708 gb/t 9116.19-1988 pn 5.0mpa(50 bar) 榫槽面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with tongue and groove face for pn 5.0mpa (50 bar)

709 gb/t 9116.20-1988 pn 10.0mpa(100 bar) 榫槽面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with tongue and groove face for pn 10.0mpa (100 bar)

　　710 gb/t 9116.21-1988 pn 2.0mpa(20 bar) 环连接面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with ring-joint face for pn 2.0mpa (20 bar)

　　711 gb/t 9116.22-1988 pn 5.0mpa(50 bar) 环连接面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with ring-joint face for pn 5.0mpa (50 bar)

　　712 gb/t 9116.23-1988 pn 10.0mpa(100 bar) 环连接面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with ring-joint face for pn 10.0mpa (100 bar)

　　713 gb/t 9116.24-1988 pn 15.0mpa(150 bar) 环连接面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with ring-joint face for pn 15.0mpa (150 bar)

　　714 gb/t 9116.25-1988 pn 25.0mpa(250 bar) 环连接面带颈平焊钢制管法兰 hubbed slip-on-welding steel pipe flanges with ring-joint face for pn 25.0mpa (250 bar)

　　715 gb/t 9117.1-1988 pn 2.0mpa(20 bar) 平面带颈承插焊钢制管法兰 hubbed socked welding steel pipe flanges with flat face for pn 2.0mpa (20 bar)

　　716 gb/t 9117.2-1988 pn 2.0mpa(20 bar) 凸面带颈承插焊钢制管法兰 hubbed socket welding steel pipe flanges with raised face for pn 2.0mpa (20 bar)

　　717 gb/t 9117.3-1988 pn 5.0mpa(50 bar) 凸面带颈承插焊钢制管法兰 hubbed socket welding steel pipe flanges with raised face for pn 5.0mpa (50 bar)

718 gb/t 9117.4-1988 pn 10.0mpa(100 bar) 凸面带颈承插焊钢制管法兰 hubbed socket welding steel pipe flanges with raised face for pn 10.0mpa (100 bar)

　　719 gb/t 9117.5-1988 pn 5.0mpa(50 bar) 凹凸面带颈承插焊钢制管法兰 hubbed socket welding steel pipe flanges with male and female face for pn 5.0mpa (50 bar)

　　720 gb/t 9117.6-1988 pn 10.0mpa(100 bar) 凹凸面带颈承插焊钢制管法兰 hubbed socket welding steel pipe flanges with male and female face for pn 10.0mpa (100 bar)

　　721 gb/t 9117.7-1988 pn 5.0mpa(50 bar) 榫槽面带颈承插焊钢制管法兰 hubbed socket welding steel pipe flanges with tongue and groove face for pn 5.0mpa (50 bar)

　　722 gb/t 9117.8-1988 pn 10.0mpa(100 bar) 榫槽面带颈承插焊钢制管法兰 hubbed socket welding steel pipe flanges with tongue and groove face for pn 10.0mpa (100 bar)

　　723 gb/t 9118.1-1988 pn 2.0mpa(20 bar) 凸面对焊环松套带颈钢制管法兰 loose hubbed steel pipe flanges with welding neck collar with raised face for pn 2.0mpa (20 bar)

　　724 gb/t 9118.2-1988 pn 5.0mpa(50 bar) 凸面对焊环松套带颈钢制管法兰 loose hubbed steel pipe flanges with welding neck collar with raised face for pn 5.0mpa (50 bar)

　　725 gb/t 9118.3-1988 pn 2.0mpa(20 bar) 环连接面对焊环松套带颈钢制管法兰 loose hubbed steel pipe flanges with welding neck collar with ring-joint face for pn 2.0mpa (20 bar)

　　726 gb/t 9118.4-1988 pn 5.0mpa(50 bar) 环连接面对焊环松套带颈钢制管法兰 loose hubbed steel pipe flanges with welding neck collar with ring-joint face for pn 5.0mpa (50 bar)

727 gb/t 9118.5-1988 pn 10.0mpa(100 bar) 环连接面对焊环松套带颈钢制管法兰 loose hubbed steel pipe flanges with welding neck collar with ring-joint face for pn 10.0mpa (100 bar)

　　728 gb/t 9118.6-1988 pn 15.0mpa(150 bar) 环连接面对焊环松套带颈钢制管法兰 loose hubbed steel pipe flanges with welding neck collar with ring-joint face for pn 15.0mpa (150 bar)

　　729 gb/t 9118.7-1988 pn 25.0mpa(250 bar) 环连接面对焊环松套带颈钢制管法兰 loose hubbed steel pipe flanges with welding neck collar with ring-joint face for pn 25.0mpa (250 bar)

　　730 gb/t 9118.8-1988 pn 42.0mpa(420 bar) 环连接面对焊环松套带颈钢制管法兰 loose hubbed steel pipe flanges with welding neck collar with ring-joint face for pn 42.0mpa (420 bar)

　　731 gb/t 9119.1-1988 pn 0.25mpa(2.5 bar) 平面板式平焊钢制管法兰 slip-on welding plate steel pipe flanges with flat face for pn 0.25mpa (2.5 bar)

　　732 gb/t 9119.2-1988 pn 0.6mpa(6 bar)平面板式平焊钢制管法兰 slip-on welding plate steel pipe flanges with flat face for pn 0.6mpa (6 bar)

　　733 gb/t 9119.3-1988 pn 1.0mpa(10 bar) 平面板式平焊钢制管法兰 slip-on welding plate steel pipe flanges with flat face for pn 1.0mpa (10 bar)

　　734 gb/t 9119.4-1988 pn 1.6mpa(16 bar) 平面板式平焊钢制管法兰 slip-on welding plate steel pipe flanges with flat face for pn 1.6mpa (16 bar)

　　735 gb/t 9119.5-1988 pn 0.25mpa(2.5 bar) 凸面板式平焊钢制管法兰 slip-on welding plate steel pipe flanges with raised face for pn 0.25mpa (2.5 bar)

　736 gb/t 9119.6-1988 pn 0.6mpa(6 bar)凸面板式平焊钢制管法兰 slip-on welding plate steel pipe flanges with raised face for pn 0.6mpa (6 bar)

　　737 gb/t 9119.7-1988 pn1.0mpa(10 bar) 凸面板式平焊钢制管法兰 slip-on welding plate steel pipe flanges with raised face for pn 1.0mpa (10 bar)

　　738 gb/t 9119.8-1988 pn 1.6mpa(16 bar) 凸面板式平焊钢制管法兰 slip-on welding plate steel pipe flanges with raised face for pn 1.6mpa (16 bar)

　　739 gb/t 9119.9-1988 pn 2.5mpa(25 bar) 凸面板式平焊钢制管法兰 slip-on welding plate steel pipe flanges with raised face for pn 2.5mpa (25 bar)

　　740 gb/t 9119.10-1988 pn 4.0mpa(40 bar) 凸面板式平焊钢制管法兰 slip-on welding plate steel pipe flanges with reised face for pn 4.0mpa (40 bar)

　　741 gb/t 9120.1-1988 pn 2.5mpa(25 bar) 凸面对焊环松套板式钢制管法兰 loose plate steel pipe flanges with welding neck collar with raised face for pn 2.5mpa (25 bar)

　　742 gb/t 9120.2-1988 pn 4.0mpa(40 bar) 凸面对焊环松套板式钢制管法兰 loose plate steel pipe flanges with welding neck collar with raised face for pn 4.0mpa (40 bar)

　　743 gb/t 9120.3-1988 pn 2.5mpa(25 bar) 凹凸面对焊环松套板式钢制管法兰 loose plate steel pipe flanges with welding neck collar with male and female face for pn2.5mpa (25 bar)

　　744 gb/t 9120.4-1988 pn 4.0mpa(40 bar) 凹凸面对焊环松套板式钢制管法兰 loose plate steel pipe flanges with welding neck collar with male and female face for pn 4.0mpa (40 bar)

745 gb/t 9120.5-1988 pn 2.5mpa(25 bar) 榫槽面对焊环松套板式钢制管法兰 loose plate steel pipe flanges with welding neck collar with tongue and groove face for pn 2.5mpa (25 bar)

　　746 gb/t 9120.6-1988 pn 4.0mpa(40 bar) 榫槽面对焊环松套板式钢制管法兰 loose plate steel pipe flanges with welding neck collar with tongue ans groove face for pn 40mpa (40 bar)

　　747 gb/t 9121.1-1988 pn 0.6mpa(6 bar)凸面平焊环松套板式钢制管法兰 loose plate steel pipe flanges with weld-on-collar with raised face for pn 0.6mpa (6 bar)

　　748 gb/t 9121.2-1988 pn 1.0mpa(10 bar) 凸面平焊环松套板式钢制管法兰 loose plate steel pipe flanges with weld-on collar with raised face for pn 1.0mpa (10 bar)

　　749 gb/t 9121.3-1988 pn 1.6mpa(16 bar) 凸面平焊环松套板式钢制管法兰 loose plate steel pipe flanges with weld-on collar with raised face for pn 1.6mpa (16 bar)

　　750 gb/t 9121.4-1988 pn 2.5mpa(25 bar) 凸面平焊环松套板式钢制管法兰 loose plate steel pipe flanges with weid-on collar with raised face for pn 2.5mpa (25 bar)