Quality System 

1.Items Standard 
ASME B16.9 Factory –Made Wrought Buttwelding Fittings
ASME B16.25 Buttwelding EndsASME B36.10 Welded and 
Seamless Wrought Steet PipeASME B36.19 Stainless Steel Pipe 
ASME B31.3 Process Piping 
ASME B16.5 Pipe Flanges and Flanges [NPS1/2 Through NPS24] Metric/Inch Standard （NPS1/2~NPS24 
ASME B16 .47 Large Diameter Steel Flanges NPS 26 Through NPS 60 Metric/Inch Standard
ASTM B861 Standard Specification for Titanium and Titanium Alloy Seamless Pipe 
ASTM B862 Specification for titanium and Titanium and Alloy Welding Pipe
ASTM B381 Standard Specification for Titanium and Titanium Alloy Seamless Forgings
MSS SP-97 Integrally Reinforced Forged Branch Outlet Fittings-Socket Welding，Threaded and Buttwelding Ends
MSS SP-43 Wrought Stainless Steel Butt¬—Welding Fittings 
AWS A5.16/A5.16M-2007 Specification for titanium and Titanium and Alloy Welding Electrodes and Rods

2. Inspection process 
Raw material inspection system Process 
             ↓
Inspection system in the middle
             ↓
Raw material inspection system finished products,
             ↓
semi-finished products inspection system 
             ↓
The quality of the product liability system 
             ↓
Product quality accident treatment system  
             ↓
Product quality objection to return system
             ↓
Product quality inspection system        
             ↓
Product quality statistical system
             ↓
Product quality feedback system


3. Test process drawing