601 GB/T 9074.8-1988 十字槽小盘头螺钉和弹簧垫圈及平垫圈组合件 Cross recessed small pan head screw,single coil spring lock washer and plain washer assemblies 602 GB/T 9074.9-1988 十字槽沉头螺钉和锥形锁紧垫圈组合件 Cross recessed countersunk head screw and countersunk serrated external toothed lock washer assemblies 603 GB/T 9074.10-1988 十字槽半沉头螺钉和锥形锁紧垫圈组合件 Cross recessed raised countersunk head screw and countersunk external toothed lock washer assemblies 604 GB/T 9074.11-1988 十字槽凹穴六角头螺栓和平垫圈组合件 Cross recessed hexagon bolt with indentation and plain washer assemblies 605 GB/T 9074.12-1988 十字槽凹穴六角头螺栓和弹簧垫圈组合件 Cross recessed hexagon bolt with indentation and single coil spring lock washer assemblies 606 GB/T 9074.13-1988 十字槽凹穴六角头螺栓, 弹簧垫圈和平垫圈组合件 Cross recessed hexagon bolt with indentation, single coil lock washer and plain washer assemblies 607 GB/T 9074.14-1988 六角头螺栓和平垫圈组合件 Hexagon head bolt and plain washer assemblies 608 GB/T 9074.15-1988 六角头螺栓和弹簧垫圈组合件 Hexagon head bolt and single coil spring lock washer assemblies 609 GB/T 9074.16-1988 六角头螺栓和外锯齿锁紧垫圈组合件 Hexagon head bolt and serrated lock washer external teeth assemblies 610 GB/T 9074.17-1988 六角头螺栓, 弹簧垫圈和平垫圈组合件 Hexagon head bolt, single coil spring lock washer and plain washer assemblies611 GB/T 9074.18-1988 十字槽盘头自攻螺钉和平垫圈组合件 Cross recessed pan head tapping screw and plain washer assemblies 612 GB/T 9074.19-1988 十字槽盘头自攻螺钉和大垫圈组合件 Cross recessed pan head tapping screw and large plain washer assemblies 613 GB/T 9074.20-1988 十字槽凹穴六角头自攻螺钉和平垫圈组合件 Cross recessed hexagon head tapping sorew with indentation and plain washer assemblies 614 GB/T 9074.21-1988 十字槽凹穴六角头自攻螺钉和大垫圈组合件 Cross recessed hexagon head tapping screw with indentation and large plain washer assemblies 615 GB/T 9074.22-1988 六角头自攻螺钉和平垫圈组合件 Hexagon head tapping screw and plain washer assemblies 616 GB/T 9074.23-1988 六角头自攻螺钉和大垫圈组合件 Hexagon head tapping screw and big washer assemblies 617 GB/T 9074.24-1988 组合件用平垫圈 Plain washer for assembly 618 GB/T 9074.25-1988 组合件用大垫圈 Big plain washer for assembly 619 GB/T 9074.26-1988 组合件用弹簧垫圈 Single coil spring lock washer for assembly 620 GB/T 9074.27-1988 组合件用外锯齿锁紧垫圈 Serrated lock washer external teeth for assembly621 GB/T 9074.28-1988 组合件用锥形锁紧垫圈 Countersunk external toothed lock washer for assembly 622 GB/T 9074.29-1988 自攻螺钉组合件用平垫圈 Samll wasner for tapping screw assembly 623 GB/T 9074.30-1988 自攻螺钉组合件用大垫圈 Big washer for tapping screw assembly 624 GB/T 9112-1988 钢制管法兰类型 Types for steel pipe flanges 625 GB/T 9113.1-1988 PN1.6MPa(16bar) 平面整体钢制管法兰 Integral steel pipe flanges with flat face for PN1.6 MPa(16 bar) 626 GB/T 9113.2-1988 PN 2.0MPa(20bar)平面整体钢制管法兰 Integral steel pipe flanges with flat face for PN 2.0 MPa(20bar) 627 GB/T 9113.3-1988 PN 1.6MPa(16 bar)凸面整体钢制管法兰 Integral steel pipe flanges with raised face for PN1.6 MPa(16 bar) 628 GB/T 9113.4-1988 PN 2.5MPa(25 bar)凸面整体钢制管法兰 Integral steel pipe flanges with raised face for PN2.5 MPa(25 bar) 629 GB/T 9113.5-1988 PN 4.0MPa(40 bar)凸面整体钢制管法兰 Integral steel pipe flanges with raised face for PN4.0 MPa(40 bar) 630 GB/T 9113.6-1988 PN 2.0MPa(20 bar)凸面整体钢制管法兰 Integral steel pipe flanges with raised face for PN2.0 MPa (20 bar) 631 GB/T 9113.7-1988 PN 5.0MPa(50 bar) 凸面整体钢制管法兰 Integral steel pipe flanges with raised face for PN5.0 MPa (50 bar) 632 GB/T 9113.8-1988 PN 10.0MPa(100 bar) 凸面整体钢制管法兰 Integral steel pipe flanges with raised face for PN10.0MPa(100 bar) 633 GB/T 9113.9-1988 PN 1.6MPa(16 bar) 凹凸面整体钢制管法兰 Integral steel pipe flanges with male and female face for PN 1.6MPa (16 bar) 634 GB/T 9113.10-1988 PN 2.5MPa(25 bar) 凹凸面整体钢制管法兰 Integral steel pipe flanges with male and female face for PN 2.5MPa (25 bar) 635 GB/T 9113.11-1988 PN 4.0MPa(40 bar) 凹凸面整体钢制管法兰 Integral steel pipe flanges with male and female face for PN 4.0MPa (40 bar) 636 GB/T 9113.12-1988 PN 5.0MPa(50 bar) 凹凸面整体钢制管法兰 Integral steel pipe flanges with male and female face for PN 5.0MPa (50 bar) 637 GB/T 9113.13-1988 PN 10.0MPa(100 bar) 凹凸面整体钢制管法兰 Integral steel pipe flanges with male and female face for PN 10.0MPa (100 bar) 638 GB/T 9113.14-1988 PN 15.0MPa(150 bar)凹凸面整体钢制管法兰 Integral steel pipe flanges with male and female face for PN 15.0 MPa (150 bar) 639 GB/T 9113.15-1988 PN 25.0MPa(250 bar) 凹凸面整体钢制管法兰 Integral steel pipe flanges with male and female face for PN 25.0MPa (250 bar) 640 GB/T 9113.16-1988 PN 1.6MPa(16 bar) 榫槽面整体钢制管法兰 Integral steel pipe flanges with tongue and groove face for PN1.6MPa(16 bar) 641 GB/T 9113.17-1988 PN 2.5MPa(25 bar) 榫槽面整体钢制管法兰 Integral steel pipe flanges with tongue and groove face for PN 2.5 MPa (25 bar) 642 GB/T 9113.18-1988 PN 4.0MPa(40 bar) 榫槽面整体钢制管法兰 Integral steel pipe flanges with tongue and groove face for PN4.0MPa(40 bar) 643 GB/T 9113.19-1988 PN 5.0MPa(50 bar) 榫槽面整体钢制管法兰 Integral steel pipe flanges with tongue and groove face for PN 5.0 MPa (50 bar) 644 GB/T 9113.20-1988 PN 10.0MPa(100 bar) 榫槽面整体钢制管法兰 Integral steel pipe flanges with tongue and groove face for PN 10.0MPa (100 bar) 645 GB/T 9113.21-1988 PN 2.0MPa(20 bar) 环连接面整体钢制管法兰 Integral steel pipe flanges with ring-joint face for PN 2.0MP(20 bar) 646 GB/T 9113.22-1988 PN 5.0MPa(50 bar) 环连接面整体钢制管法兰 Integral steel pipe flanges with ring-joint face for PN 5.0MPa(50bar) 647 GB/T 9113.23-1988 PN 10.0MPa(100 bar) 环连接面整体钢制管法兰 Integral steel pipe flanges with ring-joint face for PN 10.0MPa (100 bar) 648 GB/T 9113.24-1988 PN 15.0MPa(150 bar) 环连接面整体钢制管法兰 Integral steel pipe flanges with ring-joint face for PN 15.0MPa (150 bar) 649 GB/T 9113.25-1988 PN 25.0MPa(250 bar) 环连接面整体钢制管法兰 Integral steel pipe flanges with ring-joint face for PN 25.0MPa (250 bar) 651 GB/T 9114.1-1988 PN 0.6MPa(6 bar)凸面带颈螺纹钢制管法兰 Hubbed screwed steel pipe flanges with raised face for PN 0.6MPa (6 bar) 652 GB/T 9114.2-1988 PN 1.0MPa(10 bar) 凸面带颈螺纹钢制管法兰 Hubbed screwed steel pipe flanges with raised face for PN 1.0MPa (10 bar) 653 GB/T 9114.3-1988 PN 2.5MPa(25 bar) 凸面带颈螺纹钢制管法兰 Hubbed screwed steel pipe flanges with raised face for PN 2.5MP (25 bar) 654 GB/T 9115.1-1988 PN 0.25MPa(2.5 bar) 平面对焊钢制管法兰 Steel pipe welding neck flanges with flat face for PN 0.25MPa (2.5 bar) 655 GB/T 9115.2-1988 PN 0.6MPa(6 bar)平面对焊钢制管法兰 Steel pipe welding neck flanges with flat face for PN 0.6MPa (6 bar) 656 GB/T 9115.3-1988 PN 1.0MPa(10 bar)平面对焊钢制管法兰 Steel pipe welding neck flanges with flat face for PN1.0MPa (10 bar) 657 GB/T 9115.4-1988 PN 1.6MPa(16 bar) 平面对焊钢制管法兰 Steel pipe welding neck flanges with flat face for PN1.6MPa (16 bar) 658 GB/T 9115.5-1988 PN 2.0MPa(20 bar) 平面对焊钢制管法兰 Steel pipe welding neck flanges with flat face for PN2.0MPa (20 bar) 659 GB/T 9115.6-1988 PN 0.25MPa(2.5 bar) 凸面对焊钢制管法兰 Steel pipe welding neck flanges with raised face for PN 0.25MPa (2.5 bar) 660 GB/T 9115.7-1988 PN 0.6MPa(6 bar)凸面对焊钢制管法兰 Steel pipe welding neck flanges with raised face for PN 0.6MPa (6 bar)661 GB/T 9115.8-1988 PN 1.0MPa(10 bar) 凸面对焊钢制管法兰 Steel pipe welding neck flanges with raised face for PN 1.0MPa (10 bar) 662 GB/T 9115.9-1988 PN 1.6MPa(16 bar) 凸面对焊钢制管法兰 Steel pipe welding neck flanges with raised face for PN 1.6MPa (16 bar) 663 GB/T 9115.10-1988 PN 2.5MPa(25 bar) 凸面对焊钢制管法兰 Steel pipe welding neck flanges with raised face for PN 2.5MPa (25 bar) 664 GB/T 9115.11-1988 PN 4.0MPa(40 bar) 凸面对焊钢制管法兰 Steel pipe welding neck flanges with raised face for PN 4.0MPa (40 bar) 665 GB/T 9115.12-1988 PN 2.0MPa(20 bar) 凸面对焊钢制管法兰 Steel pipe welding neck flanges with raised face for PN 2.0MPa (20 bar) 681 GB/T 9115.28-1988 PN 10.0MPa(100 bar) 榫槽面对焊钢制管法兰 Steel pipe welding neck flanges with tongue and groove face for PN 4.0MPa (40 bar) 682 GB/T 9115.29-1988 PN 15.0MPa(150 bar) 榫槽面对焊钢制管法兰 Steel pipe welding neck flanges with tongue and groove face for PN 15.0MPa (150 bar) 683 GB/T 9115.30-1988 PN 25.0MPa(250 bar) 榫槽面对焊钢制管法兰 Steel pipe welding neck flanges with tongue and groove face for PN 15.0MPa (150 bar) 684 GB/T 9115.31-1988 PN 2.0MPa(20 bar) 环连接面对焊钢制管法兰 Steel pipe welding neck flanges with ring-joint face for PN 2.0MPa (20 bar) 685 GB/T 9115.32-1988 PN 5.0MPa(50 bar) 环连接面对焊钢制管法兰 Steel pipe welding neck flanges with ring-joint face for PN 5.0NPa (50 bar) 686 GB/T 9115.33-1988 PN 10.0MPa(100 bar) 环连接面对焊钢制管法兰 Steel pipe welding neck flanges with ring-joint face for PN10.0MPa (100 bar) 687 GB/T 9115.34-1988 PN 15.0MPa(150 bar) 环连接面对焊钢制管法兰 Steel pipe welding neck flanges with ring-joint face for PN 15.0MPa (150 bar) 688 GB/T 9115.35-1988 PN 25.0MPa(250 bar) 环连接面对焊钢制管法兰 Steel pipe welding neck flanges with ring-joint face for PN 25.0MPa (250 bar) 689 GB/T 9115.36-1988 PN 42.0MPa(420 bar) 环连接面对焊钢制管法兰 STEEL pipe welding neck flanges with ring-joint face for PN 42MPa (420 bar) 690 GB/T 9116.1-1988 PN 1.0MPa(10 bar) 平面带颈平焊钢制管法兰 Hubbed slip-on-welding steel pipe flanges with flat face for PN 1.0MPa (10 bar)691 GB/T 9116.2-1988 PN 1.6MPa(16 bar) 平面带颈平焊钢制管法兰 Hubbed slip-on-welding steel pipe flanges with flat face for PN 1.6 MPa (16 bar) 692 GB/T 9116.3-1988 PN 2.0MPa(20 bar) 平面带颈平焊钢制管法兰 Hubbed slip-on-welding steel pipe flanges with flat face for PN 2.0MPa (20 bar) 693 GB/T 9116.4-1988 PN 1.0MPa(10 bar) 凸面带颈平焊钢制管法兰 Hubbed slip-on-welding steel pipe flanges with raised face for PN 1.0MPa (10 bar) 694 GB/T 9116.5-1988 PN 1.6MPa(16 bar) 凸面带颈平焊钢制管法兰 Hubbed slip-on-welding steel pipe flanges with raised face for PN 1.6MPa (16 bar) 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) 650 GB/T 9113.26-1988 PN 42.0MPa(420 bar) 环连接面整体钢制管法兰 Integral steel pipe flanges with ring-joint face for PN 42.0MPa (420 bar) 666 GB/T 9115.13-1988 PN 5.0MPa(50 bar) 凸面对焊钢制管法兰 Steel pipe welding neck flanges with raised face for PN 5.0MPa (50 bar) 667 GB/T 9115.14-1988 PN 10.0MPa(100 bar) 凸面对焊钢制管法兰 Steel pipe welding neck flanges with raised face for PN 10.0MPa (100 bar) 668 GB/T 9115.15-1988 PN 15.0MPa(150 bar) 凸面对焊钢制管法兰 Steel pipe welding neck flanges with raised face for PN 15.0MPa (150 bar) 669 GB/T 9115.16-1988 PN 25.0MPa(250 bar) 凸面对焊钢制管法兰 Steel pipe welding neck flanges with raised face for PN 25.0MPa (250 bar) 670 GB/T 9115.17-1988 PN 1.6MPa(16 bar) 凹凸面对焊钢制管法兰 Steel pipe welding neck flanges with male and female face for PN 1.6 MPa (16 bar)671 GB/T 9115.18-1988 PN 2.5MPa(25 bar) 凹凸面对焊钢制管法兰 Steel pipe welding neck flanges with male and female face for PN 2.5MPa (25 bar) 672 GB/T 9115.19-1988 PN 4.0MPa(40 bar) 凹凸面对焊钢制管法兰 Steel pipe welding neck flanges with male and female face for PN 4.0MPa (40 bar) 673 GB/T 9115.20-1988 PN 5.0MPa(50 bar) 凹凸面对焊钢制管法兰 Steel pipe welding neck flanges with male and female face for PN 5.0MPa (50 bar) 674 GB/T 9115.21-1988 PN 10.0MPa(100 bar) 凹凸面对焊钢制管法兰 Steel pipe welding neck flanges with male and female face for PN 10.0MPa (100 bar) 675 GB/T 9115.22-1988 PN15.0MPa(150 bar) 凹凸面对焊钢制管法兰 Steel pipe welding neck flanges with male and female face for PN 15.0MPa (150 bar) 676 GB/T 9115.23-1988 PN 25.0 MPa(250bar)凹凸面对焊钢制管法兰 Steel pipe welding neck flanges with male and female face for PN 25.0MPa (250 bar) 677 GB/T 9115.24-1988 PN 1.6 MPa (16 bar)榫槽面对焊钢制管法兰 Steel pipe welding neck flanges with tongue and groove face for PN 1.6MPa (16 bar) 678 GB/T 9115.25-1988 PN 2.5 MPa (25 bar) 榫槽面对焊钢制管法兰 Steel pipe welding neck flanges with tongue and groove face for PN 2.5MPa (25 bar) 679 GB/T 9115.26-1988 PN 4.0 MPa (40 bar)榫槽面对焊钢制管法兰 Steel pipe welding neck flanges with tongue and groove face for PN 4.0MPa (40 bar) 680 GB/T 9115.27-1988 PN 5.0 MPa(50 bar) 榫槽面对焊钢制管法兰 Steel pipe welding neck flanges with tongue and groove face for PN 5.0MP (50 bar) 695 GB/T 9116.6-1988 PN 2.5MPa(25 bar) 凸面带颈平焊钢制管法兰 Hubbed slip-on-welding steel pipe flanges with raised face for PN 2.5MPa (25 bar) 696 GB/T 9116.7-1988 PN 4.0MPa(40 bar) 凸面带颈平焊钢制管法兰 Hubbed slip-on-welding steel pipe flanges with raised face for PN 4.0MPa (40 bar) 697 GB/T 9116.8-1988 PN 2.0MPa(20 bar) 凸面带颈平焊钢制管法兰 Hubbed slip-on-welding steel pipe flanges with raised face for PN 2.0MPa (20 bar) 698 GB/T 9116.9-1988 PN 5.0MPa(50 bar) 凸面带颈平焊钢制管法兰 Hubbed slip-on-welding steel pipe flanges with raised face for PN 5.0MPa (50 bar) 699 GB/T 9116.10-1988 PN 10.0MPa(100 bar) 凸面带颈平焊钢制管法兰 Hubbed slip-on-welding steel pipe flanges with raised face for PN 10.0MPa (100 bar) 700 GB/T 9116.11-1988 PN 1.6MPa(16 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 1.6MPa (16 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)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)