CNIS GB 9684-88 Hygienic standard for stainless steel food containers and table wares CNIS GB/T 3274-88 Carbon structural and low alloy steel rolled plates and strips CNIS GB/T 9450-88 Determination and verification of the effective depth of carburized and hardene... CNIS GB/T 9451-88 Determination of total or effective thickness of thin surface hardened layers o... CNIS GB/T 9443-88 Methods of liquid penetrant testing and classification of indication for steel ... CNIS GB/T 9444-88 The methods for magnetic particle testing and for specifying quality levels of ... CNIS GB 9329-88 Aluminium alloy stranded conductors and aluminium alloy conductors,steel-reinfo... CNIS GB/T 9156-88 Solid shaped steel door CNIS GB/T 9155-88 Hollow shaped steel door CNIS GB/T 9123.31-88 Steel pipe blank flanges with ring-joint face PN 2.MPa (20 bar) CNIS GB/T 9115.22-88 Steel pipe welding neck flanges with male and female face for PN 15.0MPa (150 b... CNIS GB/T 9115.11-88 Steel pipe welding neck flanges with raised face for PN 4.0MPa (40 bar) CNIS GB/T 9113.3-88 Integral steel pipe flanges with raised face for PN1.6 MPa(16 bar) CNIS GB/T 9115.19-88 Steel pipe welding neck flanges with male and female face for PN 4.0MPa (40 bar... CNIS GB/T 9123.36-88 Steel pipe blank flanges with ring-joint face for PN 42.0MPa (420 bar) CNIS GB/T 9116.16-88 Hubbed slip-on-welding steel pipe flanges with tongue and groove face for PN 1... CNIS GB/T 9116.2-88 Hubbed slip-on-welding steel pipe flanges with flat face for PN 1.6 MPa (16 bar... CNIS GB/T 9123.19-88 Steel pipe blank flanges with male and female face for PN 4.0MPa (40 bar) CNIS GB/T 9123.15-88 Steel pipe blank flanges raised face for PN 15.0MPa (150 bar) CNIS GB/T 9120.1-88 Loose plate steel pipe flanges with welding neck collar with raised face for PN... CNIS GB/T 9113.24-88 Integral steel pipe flanges with ring-joint face for PN 15.0MPa (150 bar) CNIS GB/T 9113.8-88 Integral steel pipe flanges with raised face for PN10.0MPa(100 bar) CNIS GB/T 9118.4-88 Loose hubbed steel pipe flanges with welding neck collar with ring-joint face f... CNIS GB/T 9116.6-88 Hubbed slip-on-welding steel pipe flanges with raised face for PN 2.5MPa (25 ba...