Standard No.:	GB/T 12235-2007/XG1-2011
English Name:	Steel globe valves and lift check valve for petroleum||petrochemical and allied industries, includes Amendment 1
Chinese Name:	石油、石化及相关工业用钢制截止阀和升降式止回阀 含第1号修改单
Chinese Classification:	J16    Valve
Professional Classification:	GB    National Standard
ICS Classification:	23.060.50 23.060.50    Check valves 23.060.50
Issued by:	AQSIQ;SAC
Issued on:	2011-5-30
Implemented on:	2011-7-1
Status:	valid
Superseding:	GB/T 12235-1989 General purpose industrial valves-Flanged steel globe valves and lift check valves GB/T 12235-2007 Steel globe valves and lift check valve for petroleum petrochemical and allied industries
Language:	English
File Format:	PDF
Word Count:	11000 words
Price(USD):	200.0
Delivery:	via email in 1 business day

1 Scope This Standard specifies the structural types, technical requirements, materials, test methods and inspection rules, marking, packaging, storage and transportation of steel globe valves and lift check valves with bolted bonnets. This standard is applicable to the steel globe valves and lift check valves with bolted bonnets and flanged or welded ends, with a nominal pressure of PN 16~PN 420, nominal dimension of DN 15~DN 400 and service temperature of -29℃~538℃, for petroleum, petrochemical and allied industries. This standard is applicable to the straight pattern, angle or Y pattern globe valves, steel lift check valves and steel globe stop valves. Steel throttle valves may refer to this standard. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies. GB 150 Steel Pressure Vessels GB/T 152.4 Fasteners-Counterbores for Hexagon Bolts and Nuts GB/T 196 General Purpose Metric Screw Threads - Basic Dimensions (GB/T 196-2003, ISO 724: 1993, MOD) GB/T 197 General Purpose Metric Screw Threads-Tolerances (GB/T 197-2003, ISO 965-1: 1998, MOD) GB/T 228 Metallic Materials-Tensile Testing at Ambient Temperature (GB/T 228-2002, eqv ISO 6892: 1998) GB/T 798 Bye bolts GB/T 5796.1 Trapezoidal Screw Threads-Part 1: Profiles (GB/T 5796.1-2005, ISO 2901: 1993, MOD) GB/T 5796.2 Trapezoidal Screw Threads-Part 2: General Plan (GB/T 5796.2-2005, ISO 2902: 1977, MOD) GB/T 5796.3 Trapezoidal Screw Threads-Part 3: Basic Dimensions (GB/T 5796.3-2005, ISO 2904: 1977, MOD) GB/T 5796.4 Trapezoidal Screw Threads-Part 4: Tolerances (GB/T 5796.4-2005, ISO 2903: 1993, MOD) GB/T 7306.2 Pipe Threads with 55 Degree Thread Angle Where Pressure-Tight Joints are Made on the Threads--Part 2: Taper Internal and External Threads (GB/T 7306.2-2000, eqv ISO 7-1: 1994) GB/T 9113 (All Parts) Integral Steel Pipe Flanges GB/T 9124 Specification for steel pipe flanges GB/T 12220 General purpose industrial valves-Marking (GB/T 12220-1989, idt ISO 5209: 1977) GB/T 12221 Metal valves--Face to face, end to end, center to face and center to end dimensions (GB/T 12221-2005, ISO 5752: 1982, MOD) GB/T 12222 Multi-turn valve actuator attachments (GB/T 12222-2005, ISO 5210: 1991, MOD) GB/T 12224 General Requirements for Industrial Steel Valves (GB/T 12224-2005, ASTM B16.34a: 1998, NEQ) GB/T 12228 General Purpose Industrial Valves-Specification of Carbon Steel Forgings GB/T 12229 General Purpose Industrial Valves-Specification of Carbon Steel Castings GB/T 12230 General Purpose Industrial Valves-Specification of Austenitic Steel Castings JB/T 106 Valves Marking and Paint JB/T 6440 Methods of Radiographic Examination for Steel Castings Valves JB/T 8859 Globe valve-potential pressure life test regulation JB/T 9092 Valve Inspection and Testing 3 Structural Types 3.1 Typical straight pattern globe valve is as shown in Figure 1. 3.2 Typical angle globe valve is as shown in Figure 2. 3.3 Typical Y pattern globe valve is as shown in Figure 3. 3.4 Typical lift check valve is as shown in Figure 4. 3.5 Typical globe stop valve is as shown in Figure 5.

Foreword i 1 Scope 2 Normative References 3 Structural Types 4 Technical Requirements 5 Materials 6 Test Methods and Inspection Rules 7 Marking 8 Packaging, Storage and Transportation Appendix A (Informative) Order Contract Data Sheet of Steel Globe Valves and Lift Check Valve for Petroleum, Petrochemical and Allied Industries