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Pipe End Cap

Butt Weld Cap
Standard	ASTM A234, MSS SP-75, ASTM A403
Manufacturing Standard	ASME B16.9, DIN2615, JIS B2312
Size Range	1/2” to 48”. (DN15-DN1200)
Thickness	SCH 10, SCH 40, SCH 80
Surface Coatings	Black Painted, Varnished, Epoxy Coated, Galvanized
Socket Weld Cap (and Threaded Cap)
Standard	ASTM A105, ASTM A182
Manufacturing Standard	ASME B16.11
Dimensions	1/2” and up to 4”
Pressure Ratings	2000#, 3000#, 6000#, 9000#

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Steel Pipe Cap is also called Steel Plug, it usually welded to the pipe end or mounted on the external thread of the pipe end to cover the pipe fittings. To close the pipeline so the function is the same as the pipe plug.

BW Steel Cap

BW steel pipe cap is the butt weld type of fittings, connecting methods is to use butt welding. So BW cap ends in beveled or plain.

Socket Weld Steel Pipe Cap

Socket weld cap is to connecting pipes and caps by insert the pipe into the access shoulder area of the socket weld cap.

Pipe Cap Material Grades

Stainless Steel Pipe Cap	ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
Carbon Steel Pipe Cap	ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.
Low Temperature Carbon Steel Pipe Cap	ASTM A420 WPL3, A420 WPL6
Alloy Steel Pipe Cap	ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91
Duplex Pipe Cap	ASTM A 815, ASME SA 815 UNS NO S31803, S32205. Werkstoff No. 1.4462
Nickel Alloy Pipe Cap	ASTM / ASME SB 336 UNS 2200 ( NICKEL 200 ), UNS 2201 (NICKEL 201 ), UNS 4400 (MONEL 400 ), UNS 8020 ( ALLOY 20 / 20 CB 3, UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600 ), UNS 6601 ( INCONEL 601 ), UNS 6625 (INCONEL 625), UNS 10276 ( HASTELLOY C 276 )

Buttweld Cap

DN	NPS	OD	E	E1
15	1/2	21.3	25	25
20	3/4	26.7	25	25
25	1	33.4	38	38
32	1 1/4	42.2	38	38
40	1 1/2	48.3	38	38
50	2	60.3	38	44
65	2 1/2	73	38	51
80	3	88.9	51	64
90	3 1/2	101.6	64	76
100	4	114.3	64	76
125	5	141.3	76	89
150	6	168.3	89	102
200	8	219.1	102	127
250	10	273	127	152
300	12	323.9	152	178
350	14	355.6	165	191
400	16	406.4	178	203
450	18	457	203	229
500	20	508	229	254
550	22	558.8	254	254
600	24	609.6	267	305
650	26	660.4	267	–
700	28	711.2	267	–
750	30	762	267	–
800	32	812.8	267	–
850	34	863.6	267	–
900	36	914.4	267	–
950	38	965.2	305	–
1000	40	1016	305	–
1050	42	1066.8	305	–
1100	44	1117.8	343	–
1150	46	1168.4	343	–
1200	48	1219.2	343	–

socket weld cap

DN	NPS	B	C						J	K
			3000		6000		9000			3000	6000	9000
			ave	min	ave	min	ave	min		3000	6000	9000
6	1/8	10.9	3.18	3.18	3.96	3.43			9.5	4.8	6.4
8	1/4	14.3	3.78	3.3	4.6	4.01			9.5	4.8	6.4
10	3/8	17.7	4.01	3.5	5.03	4.37			9.5	4.8	6.4
15	1/2	21.9	4.67	4.09	5.97	5.18	9.53	8.18	9.5	6.4	7.9	11.2
20	3/4	27.3	4.9	4.27	6.96	6.04	9.78	8.56	12.5	6.4	7.9	12.7
25	1	34	5.69	4.98	7.92	6.93	11.38	9.96	12.5	9.6	11.2	14.2
32	1 1/4	42.8	6.07	5.28	7.92	6.93	12.14	10.62	12.5	9.6	11.2	14.2
40	1 1/2	48.9	6.35	5.54	8.92	7.8	12.7	11.12	12.5	11.2	12.7	15.7
50	2	61.2	6.93	6.04	10.92	9.5	13.84	12.12	16	12.7	15.7	19
65	2 1/2	73.9	8.76	7.62					16	15.7	19
80	3	89.9	9.52	8.3					16	19	22.4
100	4	115.5	10.69	9.35					19	22.4	28.4

Threaded Cap

DN	NPS	P		D		G		L5	L2
DN	NPS	3000	6000	3000	6000	3000	6000	L5	L2
6	1/8	19	–	16	22	4.8	–	6.4	6.7
8	1/4	25	27	19	25	4.8	6.4	8.1	10.2
10	3/8	25	27	22	32	4.8	6.4	9.1	10.4
15	1/2	32	33	28	38	6.4	7.9	10.9	13.6
20	3/4	37	38	35	44	6.4	7.9	12.7	13.9
25	1	41	43	44	57	9.7	11.2	14.7	17.3
32	1 1/4	44	46	57	64	9.7	11.2	17	18
40	1 1/2	44	48	64	76	11.2	12.7	17.8	18.4
50	2	48	51	76	92	12.7	15.7	19	19.2
65	2 1/2	60	64	92	108	15.7	19	23.6	28.9
80	3	65	68	108	127	19	22.4	25.9	30.5
100	4	68	75	140	159	22.4	28.4	27.7	33

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