Certificates

API - AMERICAN PETROLEUM INSTITUTE
Spec. Q1       Specification for Quality Programs.
Spec. 6D       Specification for Pipeline Valves.
Std. 6 FA        Specification for Fire Test for Valves.
Std. 598          Valve Inspection and Testing.
Std. RP6F      Recommended Practice for Fire Test for Valves.
Std. 607          Fire Test for Soft-Seated Quarter-Turn Valves.

ANSI - AMERICAN NATIONAL STANDARD INSTITUTE
B 16.5     Pipe Flange and Flanged Fittings.
B 16.10   Face-to-Face and End -to-End Dimensions of Valves.
B 16.11   Forged Fittings, Socket-weld and Threaded.
B 16.25   Butt Welding Ends.
B 16.34   Valves-Flanged, Threaded and Welding Ends.
B 16.37   Hydrostatic Testing of Control Valves.
B 31.8    Gas Transmission and Distribution Piping Systems.

ASTM - AMERICAN SOCIETY FOR TESTING AND MATERIALS
ASTM VOLUME 01.01     Steel Piping, Tubing, Fitting.
ASTM VOLUME 01.02     Ferrous Casting, Ferroalloys.
ASTM VOLUME 01.05     Steel Bars, Forgings, Bearings, Chain, Springs.

ASME - AMERICAN SOCIETY OF MATERIALS ENGINEERS
ASME B 1.20.1 Pipe Thread and Flanged Fittings.
ASME B 16.5     Pipe Flange and Flanged Fittings.
ASME B 16.9     Factory Made Wrought Steel Buttwelding Fittings.
ASME B 16.11   Forged Steel Fitting, Socket Welding & Threaded.
ASME B 16.20   Ring Joint Gasket & Grooves.
ASME B 16.25   Butt Welding Ends.
ASME B 16.34   Valves Flanged, Threaded and Welding Ends.
ASME B 16.47   Large Diameter Steel Flanges, NPS 26 through NPS 60.
ASME B 31.3     Process Piping.
ASME B 31.8     Gas Transmission and Distribution Systems.
ASME B 36.10   Welded and Seamless Wrought Steel Pipe.
ASME B 36.19   Stainless Steel Pipe.
ASME Sect. V    Non-Destructive Examination.
ASME Sect. VIII Rules for Construction of Pressure Vessels.(Division 1)
ASME Sect. IX   Welding and Brazing Qualifications.

BS - BRITISH STANDARD
BS 1503     Specification for Steel Forging, for Pressure purpose.
BS 2080     Face to Face Dimensions of Flanged & Butt Welding Ends.
BS 5146      Inspection and Test of Valves
BS 5159     Cast Iron & Carbon Steel Ball Valves for General Purposes.
BS 5351     Specification for Steel Ball Valves for The Petroleum,
              Petrochemical and Allied Industries
BS 5418     Spec for Marking of Industrial Valves.
BS 6755-1 Testing of Valves, Part 1 : Pressure Testing Requirement.
BS 6755-2 Testing of Valves, Part 2 : Fire Type Testing Requirements.

DIN - DEUTSCHE INDUSTRIAL NORM
DIN 2402      Pipelines, Normal Sizes, Concept and Grading.
DIN 2501-1 Flanges, Matching Dimensions.
DIN 2999-1 Parallel Internal Thread and Taper External Thread Dimensions.
DIN 3202-1 Face to Face and Center to Face Dimensions, Flanged Valves.
DIN 3202-2 End to Face and Center to End Dimensions, Weld End Valves.
DIN 3202-4 Face to Face, Center to Face Dimensions, Female Thread.
DIN 3230-3 Technical Delivery Conditions for Valves, Summary of Testing.
DIN 3230-4 Drinking Water Valves, Requirement and Testing.
DIN 3230-5 Valves for Gas Applications, Requirement and Testing.
DIN 3230-6 Valves for Combustible Liquids, Requirements and Testing.
DIN 3239-1 Valve Welding Ends.
DIN 3357-2 Ball Valves, Full Bore Steel Ball Valves.
DIN 3357-3 Ball Valves, Reduced Bore Steel Ball Valves.
DIN 3357-4 Ball Valves, Full Bore Non-Ferrous Metal Ball Valves.
DIN 3357-5 Ball Valves, Reduced Bore, Non-Ferrous Metal Ball Valves.
DIN 3357-6 Ball Valves, Full Bore Cast Iron Ball Vales.
DIN 3357-7 Ball Valves, Reduce Bore Cast Iron Ball Valves.
DIN 50049   3.1.B Inspection Documents for The Delivery of Metallic Products.
DIN 7601     Ball Type Nipple Screwed Pipe Unions and Screwed Assembly.

EN - EUROPEAN STANDARD NORM
EN 19        Marking of General Purpose Industrial Valves.
EN 488      Preinsulated Piping Systems for Underground Hot Water System.
EN 253      Polyurethan Thermal Insulation and High Density Polyethylene.
EN 10204.3.1.B Inspection Documents for The Delivery of Metallic Products.

ISO - INTERNATIONAL STANDARD ORGANIZATION
228 Part 1 Pipe Threads, Designation, Dimensions and Tolerances.
5208          Pressure Testing to Valve / 7121 Flanged Steel Ball Valves.
5210          Industrial Valves-Multi-Turn Valve Actuator Attachments.
5211-1       Part Turn Valves Actuator Attachment-Part 1 : Flange Dimensions.
5752          Face to Face and Center to Face Dimensions.
10497        Testing of Valves : Fire Type Testing Requirements.

MSS - MANUFACTURERS STANDARDIZATION SOCIETY

SP 25         Standard Marking Systems for Valves, Fittings, Flanges and
Unions.
SP 44         Steel Pipe Line Flanges.
SP 45         Bypass and Drain Connections.
SP 53         Quality Standard for Steel Castings for Valves, Flanges & Fittings.
SP 55         Standard for steel castings for Valves, Flanges, Fittings and
Others.
SP 61         Pressure Testing of Steel Valves.
SP 72         Ball Valves With Flanged of Butt-Welding Ends for General.
SP 75         Specification for High Test Wrought Butt Welding Fittings.
SP 76/001 Surface Finish of Flange Gasket Contact Faces.
SP 77/302 Materials, Non-Destructive Examination and Certification.
SP 77/315 Electroless Nickel Plating for Improved Corrosion Resistance.
SP 77/316 Electroless Nickel Plating for Improved Wear Resistance.
SP 82         Valve Pressure Testing Methods.
SP 84         Steel Valve Socket Welding and Threaded.
SP 92         Valve User Guide.
SP 93         Quality Standard for Steel Castings and Forgings for Valves.
SP 94         Quality Standard for Ferritic and Martensitic Steel Castings.

NACE - NATIONAL ASSOCIATION OF CORROSION ENGINEERS
* NACE Materials are optional and must be specified on purchase orders.
MR-01-75 Sulfide Stress Cracking Resistant Metallic Material.
MT-01-77   Laboratory Corrosion Testing of Metals for the Process Industries

KGSC - KOREA GAS SAFETY CORPORATION SPECIFICATIONS
KDHC - KOREA DISTRICT HEATING CORPORATION
KEMCO - KOREA ENERGY MANAGEMENT CORPORATION /