Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting.
The long tapered hub provides an important reinforcement for use in several applications involving high pressure, sub-zero and / or elevated temperatures. The smooth transition from flange thickness to pipe or fitting wall thickness effected by the taper is extremely beneficial, under conditions of repeated bending, caused by line expansion or other variable forces.
These flanges are bored to match the inside diameter of the mating pipe or fitting so there will be no restriction of product flow. This prevents turbulence at the joint and reduces erosion. They also provide excellent stress distribution through the tapered hub and are easily radiographed for flaw detection.
This flange type will be welded to a pipe or fitting with a single full penetration, V weld (Buttweld).
| Description : Welding neck Flange ASTM SA105/ SA105 | |||
| Welding neck Flange SA105, Class 150, Raised face, ASME B16.5 | Welding neck Flange SA105, Class 300, Raised face, ASME B16.5 | ||
| Welding neck Flange SA105, Class 400, Raised face, ASME B16.5 | Welding neck Flange SA105, Class 600, Raised face, ASME B16.5 | ||
| Welding neck Flange SA105, Class 900, Raised face, ASME B16.5 | Welding neck Flange SA105, Class 1500, Raised face, ASME B16.5 | ||
| Welding neck Flange SA105, Class 2500, Raised face, ASME B16.5 | Welding neck Flange SA105, Class 2500, RF, ASME B16.5 | ||
| Welding neck Flange SA105, Class 150, RF, ASME B16.5 | Welding neck Flange SA105, Class 300, RF, ASME B16.5 | ||
| Welding neck Flange SA105, Class 400, RF, ASME B16.5 | Welding neck Flange SA105, Class 600, RF, ASME B16.5 | ||
| Welding neck Flange SA105, Class 900, RF, ASME B16.5 | Welding neck Flange SA105, Class 1500, RF, ASME B16.5 | ||
| Welding neck Flange SA105, Class 150, Flat face, ASME B16.5 | Welding neck Flange SA105, Class 300, Flat face, ASME B16.5 | ||
| Welding neck Flange SA105, Class 400, Flat face, ASME B16.5 | Welding neck Flange SA105, Class 600, Flat face, ASME B16.5 | ||
| Welding neck Flange SA105, Class 900, Flat face, ASME B16.5 | Welding neck Flange SA105, Class 1500, Flat face, ASME B16.5 | ||
| Welding neck Flange SA105, Class 2500, Flat face, ASME B16.5 | Welding neck Flange SA105, Class 2500, FF, ASME B16.5 | ||
| Welding neck Flange SA105, Class 150, FF, ASME B16.5 | Welding neck Flange SA105, Class 300, FF, ASME B16.5 | ||
| Welding neck Flange SA105, Class 400, FF, ASME B16.5 | Welding neck Flange SA105, Class 600, FF, ASME B16.5 | ||
| Welding neck Flange SA105, Class 900, FF, ASME B16.5 | Welding neck Flange SA105, Class 1500, FF, ASME B16.5 | ||
| Welding neck Flange SA105, Class 150, Ring type joints, ASME B16.5 | Welding neck Flange SA105, Class 300, Ring type joints, ASME B16.5 | ||
| Welding neck Flange SA105, Class 400, Ring type joints, ASME B16.5 | Welding neck Flange SA105, Class 600, Ring type joints, ASME B16.5 | ||
| Welding neck Flange SA105, Class 900, Ring type joints, ASME B16.5 | Welding neck Flange SA105, Class 1500, Ring type joints, ASME B16.5 | ||
| Welding neck Flange SA105, Class 2500, Ring type joints, ASME B16.5 | Welding neck Flange SA105, Class 2500, RTJ, ASME B16.5 | ||
| Welding neck Flange SA105, Class 150, RTJ, ASME B16.5 | Welding neck Flange SA105, Class 300, RTJ, ASME B16.5 | ||
| Welding neck Flange SA105, Class 400, RTJ, ASME B16.5 | Welding neck Flange SA105, Class 600, RTJ, ASME B16.5 | ||
| Welding neck Flange SA105, Class 900, RTJ, ASME B16.5 | Welding neck Flange SA105, Class 1500, RTJ, ASME B16.5 | ||
| Welding neck Flange SA105, CL 150, Raised face, ASME B16.5 | Welding neck Flange SA105, CL 300, Raised face, ASME B16.5 | ||
| Welding neck Flange SA105, CL 400, Raised face, ASME B16.5 | Welding neck Flange SA105, CL 600, Raised face, ASME B16.5 | ||
| Welding neck Flange SA105, CL 900, Raised face, ASME B16.5 | Welding neck Flange SA105, CL 1500, Raised face, ASME B16.5 | ||
| Welding neck Flange SA105, CL 2500, Raised face, ASME B16.5 | Welding neck Flange SA105, CL 2500, RF, ASME B16.5 | ||
| Welding neck Flange SA105, CL 150, RF, ASME B16.5 | Welding neck Flange SA105, CL 300, RF, ASME B16.5 | ||
| Welding neck Flange SA105, CL 400, RF, ASME B16.5 | Welding neck Flange SA105, CL 600, RF, ASME B16.5 | ||
| Welding neck Flange SA105, CL 900, RF, ASME B16.5 | Welding neck Flange SA105, CL 1500, RF, ASME B16.5 | ||
| Welding neck Flange SA105, CL 150, Flat face, ASME B16.5 | Welding neck Flange SA105, CL 300, Flat face, ASME B16.5 | ||
| Welding neck Flange SA105, CL 400, Flat face, ASME B16.5 | Welding neck Flange SA105, CL 600, Flat face, ASME B16.5 | ||
| Welding neck Flange SA105, CL 900, Flat face, ASME B16.5 | Welding neck Flange SA105, CL 1500, Flat face, ASME B16.5 | ||
| Welding neck Flange SA105, CL 2500, Flat face, ASME B16.5 | Welding neck Flange SA105, CL 2500, FF, ASME B16.5 | ||
| Welding neck Flange SA105, CL 150, FF, ASME B16.5 | Welding neck Flange SA105, CL 300, FF, ASME B16.5 | ||
| Welding neck Flange SA105, CL 400, FF, ASME B16.5 | Welding neck Flange SA105, CL 600, FF, ASME B16.5 | ||
| Welding neck Flange SA105, CL 900, FF, ASME B16.5 | Welding neck Flange SA105, CL 1500, FF, ASME B16.5 | ||
| Welding neck Flange SA105, CL 150, Ring type joints, ASME B16.5 | Welding neck Flange SA105, CL 300, Ring type joints, ASME B16.5 | ||
| Welding neck Flange SA105, CL 400, Ring type joints, ASME B16.5 | Welding neck Flange SA105, CL 600, Ring type joints, ASME B16.5 | ||
| Welding neck Flange SA105, CL 900, Ring type joints, ASME B16.5 | Welding neck Flange SA105, CL 1500, Ring type joints, ASME B16.5 | ||
| Welding neck Flange SA105, CL 2500, Ring type joints, ASME B16.5 | Welding neck Flange SA105, CL 2500, RTJ, ASME B16.5 | ||
| Welding neck Flange SA105, CL 150, RTJ, ASME B16.5 | Welding neck Flange SA105, CL 300, RTJ, ASME B16.5 | ||
| Welding neck Flange SA105, CL 400, RTJ, ASME B16.5 | Welding neck Flange SA105, CL 600, RTJ, ASME B16.5 | ||
| Welding neck Flange SA105, CL 900, RTJ, ASME B16.5 | Welding neck Flange SA105, CL 1500, RTJ, ASME B16.5 | ||
| Welding neck Flange SA105, 150 LBS, Raised face, ASME B16.5 | Welding neck Flange SA105, 300 LBS, Raised face, ASME B16.5 | ||
| Welding neck Flange SA105, 400 LBS, Raised face, ASME B16.5 | Welding neck Flange SA105, 600 LBS, Raised face, ASME B16.5 | ||
| Welding neck Flange SA105, 900 LBS, Raised face, ASME B16.5 | Welding neck Flange SA105, 1500 LBS, Raised face, ASME B16.5 | ||
| Welding neck Flange SA105, 2500 LBS, Raised face, ASME B16.5 | Welding neck Flange SA105, 2500 LBS, RF, ASME B16.5 | ||
| Welding neck Flange SA105, 150 LBS, RF, ASME B16.5 | Welding neck Flange SA105, 300 LBS, RF, ASME B16.5 | ||
| Welding neck Flange SA105, 400 LBS, RF, ASME B16.5 | Welding neck Flange SA105, 600 LBS, RF, ASME B16.5 | ||
| Welding neck Flange SA105, 900 LBS, RF, ASME B16.5 | Welding neck Flange SA105, 1500 LBS, RF, ASME B16.5 | ||
| Welding neck Flange SA105, 150 LBS, Flat face, ASME B16.5 | Welding neck Flange SA105, 300 LBS, Flat face, ASME B16.5 | ||
| Welding neck Flange SA105, 400 LBS, Flat face, ASME B16.5 | Welding neck Flange SA105, 600 LBS, Flat face, ASME B16.5 | ||
| Welding neck Flange SA105, 900 LBS, Flat face, ASME B16.5 | Welding neck Flange SA105, 1500 LBS, Flat face, ASME B16.5 | ||
| Welding neck Flange SA105, 2500 LBS, Flat face, ASME B16.5 | Welding neck Flange SA105, 2500 LBS, FF, ASME B16.5 | ||
| Welding neck Flange SA105, 150 LBS, FF, ASME B16.5 | Welding neck Flange SA105, 300 LBS, FF, ASME B16.5 | ||
| Welding neck Flange SA105, 400 LBS, FF, ASME B16.5 | Welding neck Flange SA105, 600 LBS, FF, ASME B16.5 | ||
| Welding neck Flange SA105, 900 LBS, FF, ASME B16.5 | Welding neck Flange SA105, 1500 LBS, FF, ASME B16.5 | ||
| Welding neck Flange SA105, 150 LBS, Ring type joints, ASME B16.5 | Welding neck Flange SA105, 300 LBS, Ring type joints, ASME B16.5 | ||
| Welding neck Flange SA105, 400 LBS, Ring type joints, ASME B16.5 | Welding neck Flange SA105, 600 LBS, Ring type joints, ASME B16.5 | ||
| Welding neck Flange SA105, 900 LBS, Ring type joints, ASME B16.5 | Welding neck Flange SA105, 1500 LBS, Ring type joints, ASME B16.5 | ||
| Welding neck Flange SA105, 2500 LBS, Ring type joints, ASME B16.5 | Welding neck Flange SA105, 2500 LBS, RTJ, ASME B16.5 | ||
| Welding neck Flange SA105, 150 LBS, RTJ, ASME B16.5 | Welding neck Flange SA105, 300 LBS, RTJ, ASME B16.5 | ||
| Welding neck Flange SA105, 400 LBS, RTJ, ASME B16.5 | Welding neck Flange SA105, 600 LBS, RTJ, ASME B16.5 | ||
| Welding neck Flange SA105, 900 LBS, RTJ, ASME B16.5 | Welding neck Flange SA105, 1500 LBS, RTJ, ASME B16.5 | ||
| Pressure Rating : Welding neck Flange ASTM SA105/ SA105 | |||
| Class 150 | Class 300 | Class 400 | Class 600 |
| Class 900 | Class 1500 | Class 2500 | |
| 150 LBS | 300 LBS | 400 LBS | 600 LBS |
| 900 LBS | 1500 LBS | 2500 LBS | 150# |
| 300# | 400# | 600# | 900# |
| 1500# | 2500# | 150 PSI | 300 PSI |
| 400 PSI | 6000 PSI | 900 PSI | 1500 SPI |
| 2500 PSI | CL150 | CL300 | CL400 |
| CL600 | CL900 | CL1500 | CL2500 |
| 150LB | 300LB | 400LB | 600LB |
| 900LB | 1500LB | 2500LB | |
| Type End : Welding neck | |||
| SCH5 | SCH10 | SCH20 | SCH30 |
| SCH STD | SCH40 | SCH60 | SCH XS |
| SCH80 | SCH100 | SCH120 | SCH160 |
| SCH XXS | |||
| Type End : Welding neck Flange ASTM SA105/ SA105 | |||
| Raised face | RF | Male Face | MF-M |
| Flat face | FF | Female Face | MF-F |
| Ring type joints | RTJ | Groove Face | TG-G |
| Socket Weldinging | SW | Tongue Face | |
| Threaded | TR’D | ||
| Standard : Welding neck Flange ASTM SA105/ SA105 | |||
| ASME B16.5 | ASME B16.47 Series B | API 605 | ASME B16.48 |
| ANSI B16.5 | ASME B16.47 Series A | MSS SP44 | ANSI B16.48 |
| ANSI B16.36 | ASME B16.36 | ||
| Material : Welding neck Flange | |||
| Stainless steel authentic | Low alloy steel | ||
| ASTM | UNS | ASTM | UNS |
| A182 Gr F304 | S30400 | A182 Gr.F1 | K12822 |
| A182 Gr F304N | S30451 | A182 Gr.F5 | K41545 |
| A182 Gr F304L | S30403 | A182 Gr.F9 | K90941 |
| A182 Gr.F304H | S30409 | A182 Gr.F91 | K90901 |
| A182 Gr.F316 | S31600 | A182 Gr.F92 | K90901 |
| A182 Gr.F316L | S31603 | A182 Gr.F11 | K11597 |
| A182 Gr.F316N | S31651 | A182 Gr.F12 | K11562 |
| A182 Gr.FXM-11 | S21904 | A182 Gr.F22 | K21590 |
| A182 Gr.FXM-19 | S20910 | A182 Gr.F23 | K41650 |
| A182 Gr.F316TI | S32100 | A182 Gr. FSCM440 | |
| A182 Gr.F321 | S32109 | A182 Gr. FSCM430 | |
| A182 Gr.F321H | S34700 | A182 Gr. FSCM429 | |
| A182 Gr.F347 | S34700 | Stainless Steel | |
| ASTM | |||
| A182 Gr.F347H | S31000 | A815 | UNS |
| A182 Gr.310 | S31700 | A182 Gr.F50 | S2205 |
| A182 Gr.F317 | S31703 | A182 Gr.F51 | S31200 |
| A182 Gr.F317L | S31254 | A182 Gr.F52 | S31803 |
| A182 Gr.F44 | S31254 | A182 Gr.F53 | S32950 |
| A182 Gr.F10 | S33100 | A182 Gr.F54 | S32750 |
| A182 Gr.F45 | S30815 | A182 Gr.F55 | S32740 |
| A182 Gr.F46 | S30600 | A182 Gr.F57 | S32760 |
| A182 Gr.47 | S31725 | A182 Gr.F904L | S39277 |
| A182 Gr.48 | S31726 | S45C | NO8904 |
| Alloy steel | Carbon Steel | SS400 | |
| ASTM | S35C | ||
| B366 Alloy20 | ASTM | A694 Gr.52 | |
| B564 Alloy20 | SA105 | A694 Gr.56 | |
| B564 Alloy 625 | A350 Gr.LF2 | A694 Gr.60 | |
| B366 Alloy 625 | A350 Gr.LF3 | A694 Gr.F42 | |
| B366 Alloy A800H/HT | A350 Gr.LF1 | A694 Gr.F46 | |
| B564 Alloy A800H/HT | B366 Alloy 825 | B564 Alloy 825 | |
