Stainless Steel 316L Blind Flange Order

In March 2025, we received another order from this old customer. This is another order from one of our regular customer who has placed hundreds orders to us. After all these orders smooth process, we are very familiar with all their requirement about the marking, surface, package and transportation, there is no need from them to concerned and double check. For example, they require their goods’ marking to be with there item number and series number, the package type are required to be wooden case as the weight data and the marking on the case should be with their PO number. This time, he purchased a batch of Stainless Steel 316L Blind Flange. The customer has their own specific marking requirements, and the packaging should be standard seaworthy wooden crates.

 

Purchase Order

 

Li	MM	DESCRIPTION	QUANITITY	UNIT
30	1002738826	FLBL,F316L,RF,CL600,2IN Flanges, Pipe, BlindDesign spec                    ANSI B16.5 Material                       STAINLESS STEEL 316L Mat, spec                      ASTM A182 GRADE F316L Facing, flange                 RAISED FACE Pressure designation           ASME CL 600 Size                           2 IN	10	EA
40	1002738826	FLBL,F316L,RF,CL600,2IN Flanges, Pipe, BlindDesign spec                    ANSI B16.5 Material                       STAINLESS STEEL 316L Mat, spec                      ASTM A182 GRADE F316L Facing, flange                 RAISED FACE Pressure designation           ASME CL 600 Size                           2 IN	10	EA
50	1002738827	FLBL,F316L,RF,CL600,1IN Flanges, Pipe, BlindDesign spec                    ANSI B16.5 Material                       STAINLESS STEEL 316L Mat, spec                      ASTM A182 GRADE F316L Facing, flange                 RAISED FACE Pressure designation           ASME CL 600 Size                           1 IN	50	EA
60	1002738827	FLBL,F316L,RF,CL600,1IN Flanges, Pipe, BlindDesign spec                    ANSI B16.5 Material                       STAINLESS STEEL 316L Mat, spec                      ASTM A182 GRADE F316L Facing, flange                 RAISED FACE Pressure designation           ASME CL 600 Size                           1 IN	50	EA

Product Photos

 

 

Specification of Stainless Steel 316L Blind Flange

 

Sealing Face	RF, FF, FTJ
Size Range	1/2” – 48” / DN15 – DN1200
Pressure Rating	Class 150, 300, 600, 900, 1500, 2500lb
Standard	ASME / ANSI B16.5, ASME B16.47 Series A/B
Stainless Steel	ASTM A182 F304/304L/304H, 316/316L, 310S, 317,347,904L

 

Stainless Steel 316L: This is a molybdenum-bearing austenitic stainless steel. The “L” designation indicates a lower carbon content compared to standard 316 stainless steel. This lower carbon content improves weldability and reduces the risk of carbide precipitation during welding, which can lead to corrosion. 316L offers excellent corrosion resistance, especially against pitting and crevice corrosion in chloride environments, and good high-temperature strength.

 

ASTM A182 F316L Blind Flange Chemical Composition

 

CHEMICAL	LIMITS	C	Mn	P	S	Si	Ni	Cr	Mo	N
ASTM A182 F316L	MIN						10.00	16.0	2.00
	MAX	0.03	2.00	0.045	0.030	1.00	15.00	18.0	3.00	0.10

ASTM A182 F316L Blind Flange Mechanical Property

 

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %	R/A %
ASTM A182 F316L	485 min	170 min	30 min	50 min

Class 600 Blind Flange Dimension

 

Nominal Pipe Size		A	C	G	H	I	J	Weight
inch	mm	mm	mm	mm	Holes	mm	mm	kg / piece
1/2	21.3	95.2	14.2	35.1	4	15.7	66.55	0.76
3/4	26.7	117.3	15.7	42.9	4	19. 10	82.6	1.28
1	33.4	123.9	17.5	50.8	4	19. 10	88.9	1.60
11/4	42.2	133.3	20.6	63.5	4	19. 10	98.6	2.23
11/2	48.3	155.4	22.3	73.15	4	22.4	114.3	3.25
2	60.3	165. 1	25.4	91.9	8	19. 10	127	4.15
21/2	73	190.5	28.4	104.6	8	22.4	149.4	6.13
3	88.9	209.5	31.7	127	8	22.4	168.1	8.44
31/2	101.6	228.6	35	139.7	8	25.4	184.2	11.0
4	114.3	273. 1	38.1	157.2	8	25.4	215.9	17.3
5	141.3	330.2	44.5	185.7	8	28.4	266.7	29.4
6	168.3	355.6	47.8	215.9	12	28.4	292.1	36.1
8	219. 1	419. 1	55.6	269.7	12	31.75	349.3	58.9
10	273	508	63.5	323.9	16	35. 10	431.8	97.5
12	323.8	558.8	66.55	381	20	35. 10	489	124
14	355.6	603.3	69.85	412.8	20	38. 10	527.1	151
16	406.4	685.8	76.2	469.9	20	41. 10	603.3	214
18	457.2	743	82.6	533.4	20	44.5	654.1	272
20	508.0	812.8	88.9	584.2	24	44.5	723.9	349
24	609.6	939.8	101.6	692.2	24	50.8	838.2	533

Face Types: 

 

The flange face is the surface that comes into contact with the gasket to create a seal. Common face types for blind flanges include:  

Raised Face (RF): The sealing surface is raised above the bolting circle.  

Flat Face (FF): The sealing surface is on the same plane as the bolting circle.  

Ring Type Joint (RTJ): A groove is machined into the flange face to accommodate a metallic ring gasket.

 

Applications:

 

• Chemical processing
• Petrochemical
• Oil and gas
• Pharmaceutical
• Food and beverage processing
• Wastewater treatment
• Marine environments