ASME Standards
| B16.9 | Factory-Made Wrought Steel Buttwelding Fittings | 
| B16.28 | Wrought Steel Buttwelding Short Radius Elbows and Returns | 
| B16.25 | Buttwelding Ends | 
| B36.10 | Welded and Seamless Wrought Steel Pipe | 
| B36.19 | Stainless Steel Pipe | 
 
ASTM Standards
| A234 | Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service | 
| A403 | Wrought Austenitic Stainless Steel Piping Fittings | 
| A420 | Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low Temperature Service | 
| A815 | Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings | 
 
MSS Standards
| SP-43 | Wrought Stainless Steel Butt-Welding Fittings | 
| SP-75 | High Test Wrought Butt-Welding Fittings | 
| SP-79 | Socket Welding Reducer Inserts | 
| SP-87 | Factory-Made Butt-Welding Fittings for Class I Nuclear Piping Applications | 
 
JIS Standards
| B2220 | Steel Welding Pipe Flanges | 
| B2311 | Steel Butt-Welding Pipe Fittings for Ordinary Use | 
| B2312 | Steel Butt-Welding Pipe Fittings | 
| B2313 | Steel Plate Butt-Welding Pipe Fittings | 
| G3452 | Carbon Steel Pipes for Ordinary Piping | 
| G3454 | Carbon Steel Pipes for Pressure Service | 
| G3457 | Arc Welded Carbon Steel Pipes | 
 
DIN Standards
| 2605-1 | Steel Butt-Welding Pipe Fittings; Elbows and Bends with Reduced Pressure Factor | 
| 2609 | Steel Butt-Welding Pipe Fittings; Technical Delivery Conditions | 
| 2615-1 | Steel Butt-Welding Pipe Fittings; Tees with Reduced Pressure Factor | 
| 2615-2 | Steel Butt-Welding Pipe Fittings; Tees for Use at Full Service Pressure | 
| 2616-1 | Steel Butt-Welding Pipe Fittings; Eccentric Reducers with Reduced Pressure Factor | 
| 2616-2 | Steel Butt-Welding Pipe Fittings; Reducers for Use at Full Service Pressure | 
| 2617 | Steel Butt-Welding Pipe Fittings; Caps | 
| 1626 | Welded Circular Unalloyed Steel Tubes Subject to Special Requirements; Technical Delivery Conditions | 
| 1629 | Seamless Circular Unalloyed Steel Tubes Subject to Special Requirements; Technical Delivery Conditions | 
| 17175 | Seamless Tubes of Heat-Resistant Steels; Technical Conditions of Delivery | 
| 50049 | Materials Testing Certificates | 
 
EN (European) Standards
| 10204 | Inspection Documents for Metallic Products | 
| 10253-1 | Butt-Welding Pipe Fittings; Wrought Carbon Steel for General Use and Without Specific Inspection Requirements | 
 
NACE Standards
| MR0175 | Sulfide Stress Cracking Resistant Metallic Material for Oilfield Equipment | 


