ASTM A694 F65 Flange Order

On April 9, 2025, we received an inquiry from a Malaysian client regarding ASTM A694 F65 weld neck flanges and blind flanges. After confirming the material grade, applicable standards, and production lead time, we provided a quotation. Following agreement on all requirements, the client promptly placed the order. Production and final inspection have now been fully completed, shipment has been finalized, and the client has received the goods.

Procurement List

ITEM	DESCRIPTION	MATERIAL	QUANTITY	UNIT
1	WN FLANGE 6″ RTJ-WELD NECK FLANGE – #600 CLASS ASME B16.5	A694 F65	1	EA
2	BL FLANGE 6″ RTJ BLIND FLANGE – #600 CLASS ASME B16.5	A694 F65	1	EA
3	WN FLANGE 2″ RTJ-WELD NECK FLANGE – #600 CLASS ASME B16.5	A694 F65	2	EA
4	BL FLANGE 2″ RTJ BLIND FLANGE – #600 CLASS ASME B16.5	A694 F65	2	EA

Weld Neck Flanges – Strength and Reliability

Weld Neck Flanges are designed for high-pressure and high-temperature applications. Their long neck allows for smooth stress distribution between the flange and the pipe, minimizing the risk of failure. Made from carbon steel, stainless steel, or alloy steel, these flanges comply with ASME B16.5, ASME B16.47, and EN 1092-1 standards.

Blind Flanges – Secure Sealing for Pipeline Termination

Blind Flanges are essential for closing the ends of piping systems while maintaining a secure seal. They are widely used for maintenance access points and system isolation. Precision manufacturing ensures flatness and smooth sealing surfaces, reducing leakage risk even under high pressure.

ASTM A694 F65 Material Composition

CHEMICAL	LIMITS	C	Mn	P	S	Si
ASTM A694 F65	MIN					0.15
	MAX	0.30	1.60	0.025	0.025	0.35

ASTM A694 F65 Mechanical Properties

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %
ASTM A694 F65	530min	450min	20 min

ASME B16.5 Standard

ASME B16.5 defines the standard specifications for steel pipe flanges and flanged fittings (from NPS ½ through NPS 24, metric/inch). It covers pressure‑temperature ratings, materials, dimensions and tolerances, marking, testing, and methods for designating flange openings. The standard includes multiple flange types — such as welding‑neck, slip‑on, socket‑weld, threaded, lap‑joint and blind flanges — with pressure classes ranging from Class 150 up to Class 2500, ensuring compatibility and safety across industrial piping systems. By following ASME B16.5, manufacturers and end users ensure that flange and fitting components are standardized, reliable, and interchangeable.

Class 600 Weld Neck Flange Dimension & weight

Nominal Pipe Size		A	B	C	D	E	F	G	H	I	J	Weight
inch	mm	mm	mm	mm	mm	mm	mm	mm	Holes	mm	mm	kg / piece
1/2	21.30	95.30	To be specified by the Purchaser	14.20	52.30	21.30	38.10	35.00	4	15.70	66.55	0.87
3/4	26.70	117.3		15.70	57.15	26.70	47.80	42.90	4	19.10	82.60	1.45
1	33.40	124.0		17.50	62.00	33.50	53.80	50.80	4	19.10	88.90	1.76
11/4	42.20	133.4		20.60	66.55	42.20	63.50	63.50	4	19.10	98.60	2.49
11/2	48.30	155.4		22.40	69.85	48.30	69.85	73. 15	4	22.40	114.3	3.49
2	60.30	165. 1		25.40	73.15	60.45	84.10	91.90	8	19.10	127.0	4.36
21/2	73.00	190.5		28.40	79.25	73.15	100.1	104.6	8	22.40	149.4	6.43
3	88.90	209.6		31.75	82.60	88.90	117.3	127.0	8	22.40	168.1	8.53
31/2	101.6	228.6		35.10	85.90	101.6	133.4	139.7	8	25.40	184.2	10.7
4	114.3	273. 1		38.10	101.6	114.3	152.4	157.2	8	25.40	215.9	17.4
5	141.3	330.2		44.50	114.3	141.2	189.0	185.7	8	28.40	266.7	29.2
6	168.3	355.6		47.80	117.3	168.4	222.3	215.9	12	28.40	292.1	34.9
8	219.1	419. 1		55.60	133.4	219.2	273.1	269.7	12	31.75	349.3	53.9
10	273.0	508.0		63.50	152.4	273.0	342.9	323.8	16	35.10	431.8	86.5
12	323.8	558.8		66.55	155.4	323.8	400.1	381.0	20	35.10	489.0	103
14	355.6	603.3		69.85	165.1	355.6	431.8	412.7	20	38.10	527.1	122
16	406.4	685.8		76.20	177.8	406.4	495.3	469.9	20	41.10	603.3	170
18	457.2	743.0		82.60	184.2	457.2	546.1	533.4	20	44.50	654.1	204
20	508.0	812.8		88.90	190.5	508.0	609.6	584.2	24	44.50	723.9	254
24	609.6	939.8		101.6	203.2	609.6	717.6	692.1	24	50.80	838.2	358

Class 600 Blind Flange Dimension & weight

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

Production and Quality Assurance

All our flanges undergo strict quality control, including chemical composition testing, mechanical property inspection, and dimensional checks. Our experienced team ensures that each Weld Neck and Blind Flange meets international standards and customer specifications.

Packaging and Safe Delivery

Flanges are carefully packed using wooden crates, steel bands, or pallets to prevent damage during transportation. We offer worldwide shipping via sea or air, with tracking options to ensure timely delivery.

Conclusion

Whether you need Weld Neck Flanges for critical pipeline systems or Blind Flanges for secure termination, ZIZI guarantees high-quality products with reliable delivery. Contact us today to place your order and experience seamless supply for your industrial project.