Short Pattern Stub End

~~USD$7~~ USD$6

Stub End Short Pattern 6“ Sch 40 ASTM A234 WPB BW MSS SP-43

SKU: CZ517 Category: Stub Ends

General Details
Technical Info
DWG & SPEC
Documents
Related Products

General Details

Stub end are available in long and short pattern with standard of MSS SP-43, the normal size is 4″, 6″ and 8″ Sch 40 which are butt weld connection type.

It is essentially a piece of pipe, with one end flared outwards and the other prepared to be welded to a pipe of the same size, material and wall thickness. Stub end is one of buttweld fittings, the others are 45 degree elbow, 90 degree elbow, 180 degree elbow, straight and reducing tee, concentric and eccentric reducer, pipe caps.

Short Pattern Stub End Dimensions

Standard: MSS SP-43, ASME B16.9

Size: NPS 1/2 to 24 / DN 15 to 600

Thickness: Sch 10S, 20, STD, 40, XS, 80, 100, 160, XXS

Short Pattern Stub End

Nominal Diameter		Outside Diameter	Length		Diameter Of Lap Nominal&Max	R
DN	NPS	OD	LP	SP	G	A Max	B Max
15	1/2	21.3	76	51	35	3	0.75
20	3/4	28.7	76	51	43	3	0.75
25	1	33.4	102	51	51	3	0.75
32	11/4	42.4	102	51	64	5	0.75
40	11/2	48.3	102	51	73	6	0.75
50	2	60.3	152	64	92	8	0.75
65	21/2	73	152	64	105	8	0.75
80	3	88.9	152	64	127	10	0.75
90	31/2	101.6	152	76	140	10	0.75
100	4	114.3	152	76	157	11	0.75
125	5	141.3	203	76	186	11	1.5
150	6	168.3	203	89	216	13	1.5
200	8	219.1	203	102	270	13	1.5
250	10	273.1	254	127	324	13	1.5
300	12	323.9	254	152	381	13	1.5
350	14	355.6	305	152	413	13	1.5
400	16	406.4	305	152	470	13	1.5
450	18	457.2	305	152	533	13	1.5
500	20	508	305	152	584	13	1.5
550	22	559	305	152	641	13	1.5
600	24	610	305	152	692	13	1.5

Material & Grades for Lap Joint Stub End

Stainless Steel Lap Joint Stub End

ASTM A403 WP304/304L/304H, WP316/316L, WP 309, WP310, WP317, WP321, WP347

Carbon Steel Stub End

ASTM A234 WPB, A860 WPHY42, WHPY52, WPHY60, WHPY65, WPHY70, A420 WPL 3 / 6 / 9.

Alloy Steel Stub End Type A

ASTM A234 WP1, WP5, WP9, WP11, WP12, WP22, WP91

Duplex Stainless Steel Short Stub End

ASTM A815 UNS S 31803, 32205, 32550, 32750, 32760

Types of Lap Joint Stub End

Type A

Type A stub ends are used for standard lap joint flanges. The lap thickness at the stub end is greater than or equal to the nominal thickness of the pipe wall. In addition, Type A has an outside corner radius to accept lap flanges. The inside corners are square. The lap usually has a machined serrated face.

Type B

Type B short ends are used as lap joint flanges for standard slip on flanges. The lap thickness of these short ends is greater than or equal to the nominal thickness of the pipe wall. In addition, the outside corner radius of Type B is small enough to accommodate a slip-on flange that can be used as a backup flange. The inside corners are square. The lap usually has a machined serrated face.

Type C

Type C stumps are available for standard lap joint flanges and slip-on flanges. It is flared with a rounded edge at the lap ID. If necessary, the radius can be squared. The lap thickness is 75% of the pipe wall. type C pipe is short enough to accommodate any spare flanges. type C laps are smooth and do not require machining.

You can view the exact specifications on our [Stub End Type A] product detail page.

Package of Carbon Steel Buttweld Fittings

Blasting and Painting.
Wrapping plastic foam.
Packing pipe fittings into wooden cases.
Stick shipping mark on the package.

Lap Joint Stub End Weights

Nominal Size		Sch10S		Sch40S		Sch80S
DN	NPS	Long Pattern	Short Pattern	Short Pattern	Long Pattern	Short Pattern	Long Pattern
15 20 25	1/2 3/4 1	0.07 0.09 0.15	0.09 0.12 0.25	0.09 0.12 0.18	0.12 0.16 0.32	0.12 0.15 0.24	0.16 0.21 0.43
32 40 50	11/4 11/2 2	0.19 0.22 0.35	0.34 0.39 0.71	0.25 0.31 0.52	0.43 0.52 1.02	0.33 0.43 0.73	0.57 0.75 1.49
65 80 90	21/2 3 31/2	0.46 0.62 0.70	0.95 1.22 1.36	0.81 1.10 1.52	1.60 2.11 2.55	1.10 1.50 2.09	2.22 2.98 3.65
100 125 150	4 5 6	0.94 1.30 1.75	1.59 2.80 3.30	1.80 2.25 3.59	3.05 5.42 7.02	2.58 3.60 5.76	4.44 7.86 11.3
200 250 300	8 10 12	2.90 4.79 7.20	4.95 8.50 10.9	5.98 10.2 14.9	10.6 18.4 22.8	9.18 13.7 19.5	16.2 24.9 30.2
350 400 450	14 16 18	7.95 9.50 11.1	15.0 17.3 19.8	15.8 18.9 22.0	28.7 33.1 38.0	21.6 25.2 29.3	38.6 44.5 51.1
500 550 600	20 22 24	14.1 16.5 19.8	25.9 28.2 35.0	24.3 – 29.6	42.3 – 51.2	32.6 – 39.7	56.8 – 68.8

Advantages of Stub Ends

Reduce the total cost of flanged joints for piping systems in high material grades.
Speed up the installation process, as the lap joint flange can be rotated to facilitate the alignment of the bolt holes.

Inspection of Carbon Steel Pipe Fittings

Check the marking. Such as name, size, schedule, grade, standard and Heat No.

Measure the dimensions. Such as outside diameter, thickness, height or length.

Ends of Short Type Stub End

Beveled Ends
Squared Ends
Flanged Ends
Grooved Ends
Threaded Ends

Technical Info

Chemical Properties of ASTM A234 WPB & WPC

Grade	C	Mn	P	S	Si	Cr	Mo	Ni	Cu	V	Nb
WPB	0.3	0.29-1.06	0.05	0.058	0.1min	0.4	0.15	0.4	0.4	0.08	0.02
WPC	0.35	0.29-1.06	0.05	0.058	0.1min	0.4	0.15	0.4	0.4	0.08	0.02

For each reduction of 0.01% below the specified C maximum, an increase of 0.06% Mn above the specified maximum will be permitted, up to a maximum of 1.35%.
The sum of Cu, Ni, Cr, and Mo shall not exceed 1.00%.
The sum of Cr and Mo shall not exceed 0.32%.
The maximum carbon equivalent (C.E.) shall be 0.50, based on heat analysis and the formula C.E.=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.

Mechanical Properties of ASTM A234 WPB / C

Tensile Strength	Yield Strength	Elongation
415 – 585 (Mpa)	240 (Mpa)	30 (%)

Longitudinal E=48t+15.00
Transverse E=32t+10.00
E = elongation in 2in [50mm], %
t = actual thickness of specimen, in [mm]

DWG & SPEC

Drawing & Specification for Lap Joint Stub End

Lap Joint Stub End Drawing

When the short type is used on the large flanges with PN 50 and PN 110(300 and 600LB)and on flanges
with PN 150(900LB)and above,or the long type is used on the larger flange with PN260 and PN420(1500 and 2500LB),the length of the cylinder may be added to be added to be feasible the welding,the adding length shall be negotiated by manufacturer and purchaser.
The thickness of joint shall be added if the TG and MFM contact surface of flange are used, and the adding thickness shall increase (not be included in)the base length F.
The radius of fillet R(type A)shall conform to the ones of loose flanges according to GB/T 9118.1~9118.2 or ASME B16.5.The radius of fillet R(type B)is only applied for the standards of MSS SP-43 with short length F.
The lap joint diameter G shall conform to the standard machined face indicated in ASME B16.5,and the back of joint shall be machined to conform to the surface of installation.When RJ used,the size K specified in ASME B 16.5 Shall apply.
The minimum lap joint thickness t shall not be less than the nominal pipe wall thickness.

Nominal Size		OD of Cylinder		Length		Radius of Fillet		Diameter of Lap
DN	NPS	OD		F		R		Diameter of Lap
DN	NPS	Max.	Min.	Long	Short	A	B	G
15	1/2	22.8	20.5	76	51	3	0.8	35
20	3/4	28.1	25.9	76	51	3	0.8	43
25	1	35.0	32.6	102	51	3	0.8	51
32	1 1/4	43.6	41.4	102	51	5	0.8	64
40	1 1/2	49.9	47.5	102	51	6	0.8	73
50	2	62.4	59.5	152	64	8	0.8	92
65	2 1/2	75.3	72.2	152	64	8	0.8	105
80	3	91.3	88.1	152	64	10	0.8	127
90	3 1/2	104.0	100.8	152	76	10	0.8	140
100	4	116.7	113.5	152	76	11	0.8	157
125	5	144.3	140.5	203	76	11	1.6	186
150	6	171.3	167.5	203	89	13	1.6	216
200	8	222.1	218.3	203	102	13	1.6	270
250	10	227.2	272.3	254	127	13	1.6	324
300	12	328.0	323.1	254	152	13	1.6	381
350	14	359.9	354.8	305	152	13	1.6	413
400	16	411.0	405.6	305	152	13	1.6	470
450	18	462.0	456.0	305	152	13	1.6	533
500	20	514.0	507.0	305	152	13	1.6	584
550	22	565.0	558.0	305	152	13	1.6	64
600	24	616.0	609.0	305	152	13	1.6	692