Galvanizing Back up Flange

• Standard: ANSI, DIN, GB, JIS
• Type: Back-up Flange
• Material: Carbon Steel
• Structure: Round
• Connection: Welding
• Sealing Surface: RF
• Model NO.: KM-20200421
• Manufacturing Way: Forging
• Transport Package: in Seaworthy Export Wooden Cases
• Specification: 1/8" NB TO 48"NB.
• Trademark: KINGMETAL
• Origin: China
• HS Code: 7307110000
• Production Capacity: 10000 Tons Per Month

Product Description

Galvanizing back up flange :

Back up Flanges, steel Back up Flanges are available with following specifications:
Carbon Steel Back up Flanges : ASTM A 105, ASTM A 181
Alloy Steel Back up Flanges : ASTM A 182, GR F1, F11, F22, F5, F9, F91 Nickel Alloys Back up Flanges: Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22, C276

Surface treatment:black painting and galvanizing.
Back up Flanges Size : 1/8" NB TO 48"NB.
Back up Flanges Class : 150#, 300#,400 #,600#,900#, 1500# & 2500 #.

 

Nominal Pipe Size	Outside Diameter (OD)	Inside Diameter (ID)	Thickness (T)	Bolt Circle (BC)	Hole Diameter	No. of Bolt Holes	45 Degree Bevel (B)	Approx. Weight (lbs)
				Drilling Pattern - 150#
2	6.00	2.46	0.500	4.75	0.750	4	0.250	2.9
2 1/2	7.00	3.00	0.500	5.50	0.750	4	0.250	4.2
3	7.50	3.60	0.500	6.00	0.750	4	0.250	4.4
4	9.00	4.60	0.500	7.50	0.750	8	0.250	5.6
5	10.00	5.69	0.500	8.50	0.875	8	0.250	6.9
6	11.00	6.75	0.625	9.50	0.875	8	0.250	9.1
8	13.50	8.75	0.625	11.75	0.875	8	0.312	12.9
10	16.00	10.95	0.625	14.25	1.000	12	0.312	16.2
12	19.00	12.95	0.750	17.00	1.000	12	0.312	29.3
14	21.00	14.20	0.750	18.75	1.125	12	0.312	36.2
16	23.50	16.20	0.750	21.25	1.125	16	0.375	42.0
18	25.00	18.20	0.750	22.75	1.250	16	0.375	42.3
20	27.50	20.25	0.750	25.00	1.250	20	0.375	49.7
22	29.50	22.25	1.000	27.25	1.375	20	0.375	73.7
24	32.00	24.25	1.000	29.50	1.375	20	0.375	86.4
26	34.25	26.25	1.000	31.75	1.375	24	0.375	97.5
30	38.75	30.38	1.000	36.00	1.375	28	0.375	113.1
32	41.75	32.38	1.125	38.50	1.625	28	0.375	153.4
36	46.00	36.38	1.125	42.75	1.625	32	0.375	175.5