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Stainless Steel Welded Pipe

1. General specifications:

Size：	O.D.9.9mm to O.D. 2000mm; W.T. 0.4mm to 25mm.
Application：	Chemical, pulp, water treat, food, automobile, oil & gas, petrochemical equipment, onshore and offshore poject.
Standards：	GB, ASTM, JIS, ASTM A789, ASTM A790
Materials:	304, 304L, 316, 316L, 31803, 32750, 32760, 32205

Introduction Details

2. Stainless steel pipe:

ASTM A312, ASTM A358, ASTM A778

Outside diameter		O.D.(mm)	Thickness
N.B.	NPS	O.D.(mm)	SCH 5S(mm)	SCH10S(mm)	SCH40S(mm)
8	1/4"	13.72	-	-	2.24
10	3/8"	17.15	-	-	2.31
15	1/2"	21.34	1.65	2.11	2.77
20	3/4"	26.67	1.65	2.11	2.87
25	1"	33.40	1.65	2.77	3.38
32	11/4"	42.16	1.65	2.77	3.56
40	11/2"	48.26	1.65	2.77	3.68
50	2"	60.33	1.65	2.77	3.91
65	21/2"	73.03	2.11	3.05	5.16
80	3"	88.90	2.11	3.05	5.49
90	31/2"	101.60	2.11	3.05	5.74
100	4"	114.30	2.11	3.05	6.02
125	5"	141.30	2.77	3.40	6.55
150	6"	168.28	2.77	3.40	7.11
200	8"	219.08	2.77	3.76	8.18
250	10"	273.05	3.40	4.19	9.27
300	12"	323.85	3.96	4.57	9.52

JIS G3459

Outside diameter		O.D.(mm)	Thickness
(A)	(B)	O.D.(mm)	SCH 5S(mm)	SCH10S(mm)	SCH20S(mm)	SCH40S(mm)
8	1/4"	13.8	1.2	1.65	2.0	2.2
10	3/8"	17.3	1.2	1.65	2.0	2.3
15	1/2"	21.7	1.65	2.1	2.5	2.8
20	3/4"	27.2	1.65	2.1	2.5	2.9
25	1"	34.0	1.65	2.8	3.0	3.4
32	11/4"	42.7	1.65	2.8	3.0	3.6
40	11/2"	48.6	1.65	2.8	3.0	3.7
50	2"	60.5	1.65	2.8	3.5	3.9
65	21/2"	76.3	2.1	3.0	3.5	5.2
80	3"	89.1	2.1	3.0	4.0	5.5
90	31/2"	101.6	2.1	3.0	4.0	5.7
100	4"	114.3	2.1	3.0	4.0	6.0
125	5"	139.8	2.8	3.4	5.0	6.6
150	6"	165.2	2.8	3.4	5.0	7.1
200	8"	216.3	2.8	4.0	6.5	8.2
250	10"	267.4	3.4	4.0	6.5	9.3
300	12"	318.5	4.0	4.5	6.5	10.3

3. Large diameter stainless steel pipe(O.D. can be made up to 80"):

ASTM A312, ASTM A358, ASTM A409, CNS 13517 G3259, JIS G3468

Outside diameter		O.D.(mm)	Thickness
(A)	(B)	O.D.(mm)	SCH 5S(mm)	SCH10S(mm)	SCH20(mm)	SCH40(mm)
350	14"	355.6	4.0	5.0	8.0	11.1
400	16"	406.4	4.5	5.0	8.0	12.7
450	18"	457.2	4.5	5.0	8.0	14.3
500	20"	508.0	5.0	5.5	9.5	15.1
550	22"	558.8	5.0	5.5	9.5	15.9
600	24"	609.6	5.5	6.5	9.5	17.5
650	26"	660.4	5.5	8.0	12.7	17.5
700	28"	711.2	5.5	8.0	12.7	17.5
750	30"	762.0	6.5	8.0	12.7	17.5
800	32"	812.8	-	8.0	12.7	17.5
850	34"	863.6	-	8.0	12.7	17.5
900	36"	914.4	-	8.0	12.7	19.1
1000	40"	1016.0	-	9.5	14.3	26.2

4. Stainless steel tube for boiler, heat-exchanger and feedwater heater:

ASTM A249, ASTM A269, ASTM A688, CNS 7383 G3142, JIS G3463

Outside diameter (mm)	Thickness(mm)
Outside diameter (mm)	1.6	2.0	2.3	2.6	2.9	3.2	3.5	4.0	4.5	5.0
15.9		○	○	○	○	○	○	○	○	○
19.0			○	○	○	○	○	○	○	○
21.7						○	○	○	○	○
25.4						○	○	○	○	○
27.2						○	○	○	○	○
31.8						○	○	○	○	○
34.0								○	○	○
38.1								○	○	○
42.7								○	○	○
48.6								○	○	○
50.8									○	○
60.3									○	○
63.5									○	○
76.2
88.9	○
101.6	○
114.3	○	○	○	○
139.8	○	○	○	○

5. Stainless steel mechanical tube:

ASTM A554, CNS 5802 G3119, JIS G3446

Outside diameter (mm)	Thickness(mm)
Outside diameter (mm)	0.7	0.8	0.9	1.0	1.2	1.5	2.0	3.0
12.7							○	○
15.9							○	○
19.0							○	○
22.2							○	○
25.4							○	○
28.6	○	○					○	○
31.8	○	○
38.1	○	○
50.8	○	○	○	○
63.5	○	○	○	○
76.2	○	○	○	○	○
88.9	○	○	○	○	○	○
101.6	○	○	○	○	○	○
114.3	○	○	○	○	○	○	○

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