Steel Blind Flange

Steel blind flange is a common flange connection parts, its main feature is that there is no center hole, used to close the port of pipeline or equipment. Its role is to isolate and cut off the flow of media in the pipeline, thus facilitating the overhaul, cleaning, replacement or other maintenance operations of the equipment.

Overview

Classification

Stainless steel blind flange: it has the advantages of corrosion resistance, high temperature resistance, shock resistance, pressure resistance, etc., and is suitable for all kinds of harsh environments. Commonly used in pipeline blocking, equipment maintenance, pipeline segmentation sealing and preventing media mixing and other scenarios.

Carbon steel blind flange: it has high strength and rigidity and can withstand large pressure and load. Widely used in piping systems in petroleum, chemical, natural gas, pharmaceutical, food and other industries.

Features:

Prevent medium leakage

Good removability

Wide applicability

Flexible selection

Resistant to corrosion and high temperature‌‌

Steel Blind Flange-PIC.jpg

Outside diameter of pipe		ISO Np 10								ANSIB16.5
Outside diameter of pipe		ISO Np 10								150Lbs
θD		θA	C	θR	E	Drilling			Theo.	θA	C	θR	Drilling			Theo.
θD		θA	C	θR	E	θG	N	θd	Weight	θA	C	θR	θG	N	θd	Weight
Nominal	Actual	mm	mm	mm	mm	mm	Bolt	mm	Kg/piece	mm	mm	mm	mm	Bolt	mm	Kg/piece
Inch	mm	mm	mm	mm	mm	mm	Holes	mm	Kg/piece	mm	mm	mm	mm	Holes	mm	Kg/piece
0.5	20	95	14	46	2	65	4	14	0.8	90	11.1	34.9	60.3	4	15.9	0.9
0.75	25	105	16	56	2	75	4	14	1.15	100	12.7	42.9	69.8	4	15.9	1.05
1	30	115	16	65	2	85	4	14	1.4	110	14.3	50.8	79.4	4	15.9	1.15
1.25	38	140	18	76	2	100	4	18	2.05	115	15.9	63.5	88.9	4	15.9	1.5
1.5	44.5	150	18	84	3	110	4	18	2.4	125	17.5	73	98.4	4	15.9	1.6
2	57	165	20	99	3	125	4	18	3.25	150	19.1	92.1	120.6	4	19	2.05
2.5	76.1	185	20	118	3	145	4	18	4.15	180	22.2	104.8	139.7	4	19	3.65
3	88.9	200	20	132	3	160	8	18	5.75	190	23.8	127	152.4	4	19	4.55
4	108	220	22	156	3	180	8	18	7.05	230	23.8	157.2	190.5	8	19	9.1
5	133	250	22	184	3	210	8	18	10.1	255	23.8	185.7	215.9	8	22.2	10.25
6	159	285	24	211	3	240	8	22	13	280	25.4	215.9	241.3	8	22.2	13.7
7	193.7	315	24	242	3	270	8	22	17.55	-	-	-	-	-	-	-
8	219.1	340	24	266	3	295	8	22	20.4	345	28.6	269.9	298.4	8	22.2	22.8
10	267	395	26	319	3	350	12	22	29.65	405	30.2	323.8	361.9	12	25.4	36.45
12	323.9	445	26	370	4	400	12	22	37.6	485	31.8	381	431.8	12	25.4	57
14	368	505	26	429	4	460	16	22	52.45	535	34.9	425.1	476.2	12	28.6	67.25
16	419.1	565	28	480	4	515	16	26	68.4	595	36.5	482.6	539.7	16	28.6	87.8
18	457.2	615	28	530	4	565	20	26	80.95	635	39.7	533.4	577.8	16	31.7	108.3
20	508	670	30	582	4	620	20	26	103.75	700	42.9	584.2	635	20	31.7	140.25
24	610	780	34	682	5	725	20	30	149.35	815	47.6	692.1	749.3	20	34.9	212.05