| ASME/ ANSI Standard Pipe Fittings | ANSI B16.9-2012-Factory Made Wrought Steel Butt welding Fittings | 
| ANSI B16.11-2005-Forged Fittings,Socket Welding and Threaded | 
| ANSI B16.25-2012-Butt welding Ends | 
| ANSI B16.28-1994 Wrought Steel Butt Welding Short Radius Elbows And Returns | 
| ANSI B16.49-2012 Factory Made Wrought Steel Butt welding Induction Bends for Transportation and Distribution Systems | 
| ANSI B36.19M 2004 Stainless steel pipe | 
| ANSI B36.10M 2004 Welded and Seamless Wrought Steel Pipe | 
| MSS SP Pipe Fittings | MSS SP-75-2004 Specification for High Test,Wrought,Butt Welding Fittings | 
| MSS SP-25-1998 Marking System for Valves,Fittings,Flanges and Unions | 
| MSS SP-43-2008-Wrought and Fabricated Butt Welding Fittings for Low Pressure,Corrosion Resistant Applications | 
| EN Standard Pipe Fittings | BS EN 10253-1 Butt Welding Pipe Fittings Part 1:Wrought Carbon Steel for General Use and Without Specific Inspection Requirements | 
| BS EN 10253-2 Butt welding pipe fittings part 2: Non alloy ferritic alloy steels with specific inspection requirements | 
| BS EN10253-3 Butt welding pipe fittings Part 3: Wrought austenitic and austenitic ferritic(duplex)stainless steels without specific inspection requirements | 
| BS EN 10253-4 Butt welding pipe fittings Part 4:Wrought austenitic and austenitic-ferritic(duplex)stainless steels with specific inspection requirements | 
| BS EN 10241 2000 Steel threaded pipe fittings | 
| DIN Standard Pipe Fittings | DIN 2605 part1 1991 Steel butt welding pipe fittings elbows and bends with reduced pressure factor | 
| DIN 2605 part2 1995 Steel butt welding pipe fittings elbows and bends for use at full service pressure | 
| DIN 2609 1991 steel butt welding pipe fittings technical delivery conditions | 
| DIN 2615 part1 1992 steel butt welding pipe fittings tees with reduced pressure factor | 
| DIN 2615 part2 1992 steel butt welding pipe fittings Tees for use at full service pressure | 
| DIN 2616 part1 1991 steel butt welding pipe fittings eccentric reducers with reduced pressure factor | 
| DIN 2616 part2 1991 steel butt welding pipe fittings reducers for use at full service pressure | 
| DIN2617 1991 steel butt welding pipe fittings caps | 
| DIN 2982 screwed steel pipe fittings parallel nipples,taper nipples | 
| DIN 2986 threaded steel pipe fittings sockets | 
| DIN 28011 torispherical heads | 
| GOST Standard Pipe Fittings | GOST 17375-2001 carbon and low alloy steel butt welding fittings.Sharply curved bends type 3D(R=1,5 DN).Design | 
| GOST 17376-2001 carbon and low alloy steel butt welding fittings.Tees.Design | 
| GOST 17378-2001 carbon and low alloy steel butt welding fittings reducers design | 
| GOST 17379-2001 carbon and low alloy steel butt welding fittings Elliptical caps Design | 
| GOST 17380-2001 carbon and low alloy steel butt welding fittings general specifications | 
| GOST 30753-2001 carbon and low alloy steel butt weldings fittings sharply curved bends type 2D(R=DN)design | 
| JIS Standard Pipe Fittings | JIS B2311-2009 steel butt welding pipe fittings for ordinary use | 
| JIS B2312-1997 Steel butt welding pipe fittings | 
| JIS B2313-2009 steel plate butt welding pipe fittings | 
| JIS B2316-2007 steel socket welding pipe fittings | 
| ISO Standard | ISO 3419 Non-alloy and alloy steel butt welding fittings | 
| ISO 5251 stainless steel butt welding fittings |