Forged Stub End
Stub ends are pipe fittings used in place of welded flanges where rotating back up flanges are desired.
Production Range| Type | Nominal diameter | Thickness | |
| Seamless stub end | 2"~24" | DN15-DN600 | SCH10S~SCH160 |
Manufacturing Technique
Forged stub ends in Yuanyang are manufactured with die stamping and machining techniques. Welding or casting techniques are unacceptable.
Quality Commitment
Yuanyang’s commitment to quality is evident in every step of our process: the steel pipes, strips, bars, and sheets are purchased from trustworthy manufacturers; raw materials are marked with different colors so that they are easily distinguished; and 100% spectral detection is conducted for all of the finished fittings before shipping.
| Austenitic stainless steel | Super duplex stainless steel | Nickel-based alloy steel | Carbon steel/alloy steel | Other materials |
| 304 304L 304H 304LN | S31803 S32205 | N10276 N04400 N06600 | Q235 20# 20G | TA1 TA2 TA3 TC1~TC9 |
| 316 316L 316H 316Ti | S32304 S32760 | N06600 N06625 N06690 | WPB A105 16Mn | LF2 LF3 LF5 LF6 LF10 |
| 310S 321 321H 347 | S32550 S32750 | N08800 N08825 N08904 | 45# 15CrMo | Al, Ti, martensite |
| S31254 | S33400 | N08020 N08810 N08811 | A350LF2 A420Gr.WPL6 |
| GB/T12459 | seamless steel pipe fittings |
| HG/T20592 | steel pipe flange, washer, fastener (PN series) |
| HG/T20615 | steel pipe flange (CLASS series) |
| ASME B16.5 | pipe flange and flange fittings |
| ASME B16.9 | factory made forged butt weld fittings |
| ASTM A403/A403M | forged Austenitic stainless steel pipe fittings |
| DIN EN 10253-3 | Butt weld fittings: forged Austenitic stainless steel and duplex Austenitic stainless steel with no special inspection requirements |
| DIN EN 10253-4 | Butt weld fittings: forged Austenitic stainless steel and duplex Austenitic stainless steel with special inspection requirements |
Our company can provide forged stub ends according to custom need materials like austenitic stainless steel, duplex stainless steel, carbon steel and alloy steel listed as follows:
304 stainless steel stub end
304L stainless steel stub end
304H stainless steel stub end
304LN austenitic stainless steel stub end
316 stainless steel stub end
316L stainless steel stub end
316H stainless steel stub end
316Ti stainless steel stub end
310S stainless steel stub end
321 stainless steel stub end
321H stainless steel stub end
347 stainless steel stub end
S31254 austenitic stainless steel stub end
S31803 duplex stainless steel stub end
S32205 duplex stainless steel stub end
S32304 duplex stainless steel stub end
S32760 duplex stainless steel stub end
S32550 duplex stainless steel stub end
S32750 duplex stainless steel stub end
S33400 stainless steel stub end
N10276 Nickel alloy stub end
N04400 Nickel alloy stub end
N06600 Nickel alloy stub end
N06625 Nickel alloy stub end
N06690 Nickel alloy stub end
N08800 Nickel alloy stub end
N08825 Nickel alloy stub end
N08904 Nickel alloy stub end
N08020 Nickel alloy stub end
N08810 Nickel alloy stub end
N08811 Nickel alloy stub end
Q235 carbon steel stub end
20# carbon steel stub end
20G carbon steel stub end
WPB carbon steel stub end
A105 carbon steel stub end
16Mn steel stub end
45# carbon steel stub end
15CrMo alloy steel stub end
A350 LF2 carbon steel stub end
A420 grade WPL6 carbon steel stub end
TA1 titanium stub end
TA2 titanium stub end
TA3 titanium stub end
TC1—TC9 titanium alloy stub end
LF2 alloy steel stub end
LF3 alloy steel stub end
LF5 alloy steel stub end
LF6 alloy steel stub end
LF10 alloy steel stub end
Martensite stainless steel stub end
