AWWA C207 Flanges | Class B D E F | Waterworks

PM Industries is a manufacturer, supplier, and stockist of AWWA C207 flanges, steel pipe flanges built for waterworks service. They are used across municipal water, wastewater, and industrial piping where a system needs a dependable, economical, and standardized flange connection. The standard covers ring-type slip-on flanges and blind flanges in sizes from 4 inches through 144 inches, which suits a wide span of pipeline diameters and flow rates.

AWWA C207 flanges come in several pressure classes, usually Class B, Class D, Class E, and Class F, so engineers can match the flange to the operating pressure and service conditions. Class B handles lower pressures, Class D and Class E step up from there, and Class F covers the higher end. The right class depends on the operating pressure, the service, and the overall system design.

These flanges are commonly made from steel plate, bar, or forgings and are meant to attach to steel pipe, fittings, valves, and other waterworks appliances. A key feature is the flat-faced design, which gives consistent gasket seating and reliable sealing in water service. Dimensions, bolt-hole patterns, facing, and tolerances are held to the standard so the flange aligns and mates correctly with the parts it joins.

The standard supports practical fabrication methods, including forging, plate cutting, ring welding, and segment welding for the larger sizes, which keeps production efficient without giving up quality. That is part of why AWWA C207 flanges are a frequent pick for transmission lines, treatment plants, pumping stations, and distribution systems. Their durability, easy installation, and wide availability make them a steady choice on projects where long-term performance and low-maintenance service count.

Paired with the right gaskets, studs, and nuts, AWWA C207 flanges form secure bolted joints that hold up to routine service pressures and field conditions. When ordering, define the size, the pressure class (B, D, E, or F), the flange type (slip-on ring or blind), the facing, and the material and certification you need. PM Industries supplies AWWA C207 flanges across the full size range in a range of classes and materials, each produced under strict quality control. Contact our team for sizes, certification, and lead times on your next order.

Specification AWWA C207 Flanges

Standards	ANSI/ASME B16.5, B16.48, ANSI Flanges, GOST Flanges, DIN Flanges, EN-1092, B16.47 Series A & B, ASME Flanges, EN Flanges, AWWA Flanges, BS Flanges.
JIS Standard	5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
DIN FLANGES	DIN 2527, 2627, 2631, 2656, 2576, 2673, 2629, 2628, 2566, 2641, 2637, 2655, 2634, 2636, 2632, 2633, 2638, 2642, 2573, 2635.
Pressure Rating	Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Types	Threaded, Plate, Screwed, Forged.
Supporting material	Gasket, Ring Joint, Flange Bolts
Size range	1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Production technique	Forged, machined and Heat treated
Available Flange Type	Weld Neck Flanges, RTJ Flanges, Slip On Flanges, Spectacle Blind Flanges, Flanges Gaskets, Square Flanges, Standard Insert Flanges, High Hub Blinds Flanges, Flat Flanges, forged flanges, Weldo / Nipo Flanges, Jacket Insert Flanges, Tongue groove Flanges, Blind Flanges, Socket Weld Flanges, Large diameter Flanges, Long Weld Neck Flanges, Spacer Blinds, SWRF Flanges, SORF Flanges, Angle Face Rings Flanges, Spades Ring Spacers Flanges, WNRF Flanges, Screwed Flanges, Insert Flanges, flanges bolts, cf flange, Lap Joint Flanges, ASME B16.36 Orifice Flanges, Plate Flange, Expander Flanges, Ring Type Joint Flanges, Loose Flanges, Reducing Flanges, puddle flange, Threaded Flanges, blank flange, vacuum flange.
Connect Type/ Flange Face Type	Ring Type Joint (RTJ), Flat Face (FF), Tongue & Groove, Small Male-Female (SMF), Lap-Joint Face (LJF), Raised Face (RF), Large Male-Female (LMF), Small Tongue.
Custom design	As per your drawing
Test	Direct-reading Spectrograph, X-ray detector, UItrasonic flaw detector, Magnetic particle detector, Hydrostatic testing machine.
Origin	Indian / USA / Korean / West Europe / Japan
Pressure Class	PN 6 TO PN 100
Thickness	Normal Pipe Size ≤ 18
Bore Diameter	Normal Pipe ≤ 10
High Temperature	Above 200°C (400°F) For Class 150 Or Above 400°C (750°F)
Low Temperature	Above -29 Degree C (−20°F)
Coating/Surface Treatment:	Zinc Plated, Anti-rust Paint, Oil Black Paint, Yellow Transparent, Cold and Hot Dip Galvanized.
European/African/Russian Standard Flanges	Available
Gaskets Types	Full Face, Metallic Ring, Flat Ring Gasket
Marking Standard	Name of Manufacturer
	Schedule
	Type of Flange Facing
	Pressure Class
	Nominal Pipe Size, etc
Test Certificates	EN 10204/3.1B, NACE MR0103, NACE MR0175
	Raw Materials Certificate
	100% Radiography Test Report
	Third Party Inspection Report, etc

Flange Type Available

Awwa C207 Class D Flange Weight

Standard	Class	Diameter	Bolt Circle Diameter	Number of Bolts	Bolt Size	Diameter of Bolt Hole
AS4087 Flanges	PN14 Flanges	95	67	4	M12	14
AS 2129 Flange	Table C Flanges	95	67	4	13	14
	Table D Flanges	95	67	4	13	14
	Table E Flanges	95	67	4	13	14
	Table F Flanges	95	67	4	13	14
	Table H Flanges	114	83	4	16	17
	Table J Flanges	114	83	4	16	17
ANSI B16.5 Flanges	ANSI 150 Flanges	89	60	4	13	16
	ANSI 300 Flanges	95	67	4	13	16
	ANSI 600 Flanges	95	67	4	13	16
	ANSI 900 Flanges	121	83	4	19	22
	ANSI 1500 Flanges	121	83	4	19	22
ISO 7005 (DIN) Flange	PN6 Flanges	80	55	4	M10	11
	PN10 Flanges	95	65	4	M12	14
	PN16 Flanges	95	65	4	M12	14
	PN20 Flanges	90	60.5	4	M14	16
	PN25 Flanges	95	65	4	M12	14
	PN40 Flanges	95	65	4	M12	14

Awwa C207 Class D Flange Bolt Size

NPS	(OD)	SORF Bore (ID)	Number of Bolt Holes	Holes Diameter	Circle Of Bolt (BC)	Flange Class D (T)	Flange Class D (L)	Flange Class D (E)	Flange Class E (T)	Flange Class E (L)	Flange Class E (E)
4	9.00	4.57	8	0.750	7.50	0.500	0.875	5.312	0.938	1.312	5.312
5	10.00	5.66	8	0.875	8.50	0.562	1.250	6.312	0.938	1.438	6.438
6	11.00	6.72	8	0.875	9.50	0.562	1.250	7.562	1.000	1.562	7.562
8	13.50	8.72	8	0.875	11.75	0.562	1.250	9.688	1.125	1.750	9.688
10	16.00	10.88	12	1.000	14.25	0.688	1.250	12.000	1.188	1.938	12.000
12	19.00	12.88	12	1.000	17.00	0.688	1.250	14.375	1.250	2.188	14.375
14	21.00	14.19	12	1.125	18.75	0.750	1.250	15.750	1.375	2.250	15.750
16	23.50	16.19	16	1.125	21.25	0.750	1.250	18.000	1.438	2.500	18.000
18	25.00	18.19	16	1.250	22.75	0.750	1.250	19.875	1.562	2.688	19.875
20	27.50	20.19	20	1.250	25.00	0.750	1.250	22.000	1.688	2.875	22.000
22	29.50	22.19	20	1.375	27.25	1.000	1.750	24.250	1.812	3.125	24.000
24	32.00	24.19	20	1.375	29.50	1.000	1.750	26.125	1.875	3.250	26.125
26	34.25	26.25	24	1.375	31.75	1.000	1.750	28.500	2.000	3.375	28.500
28	36.50	28.25	28	1.375	34.00	1.000	1.750	30.500	2.062	3.438	30.750
30	38.75	30.25	28	1.375	36.00	1.000	1.750	32.500	2.125	3.500	32.750
32	41.75	32.25	28	1.625	38.50	1.125	1.750	34.750	2.250	3.625	35.000
34	43.75	34.25	32	1.625	40.50	1.125	1.750	36.750	2.312	3.688	37.000
36	46.00	36.25	32	1.625	42.75	1.125	1.750	38.750	2.375	3.750	39.250
38	48.75	38.25	32	1.625	45.25	1.125	1.750	40.750	2.375	3.750	41.750
40	50.75	40.25	36	1.625	47.25	1.125	1.750	43.000	2.500	3.875	43.750
42	53.00	42.25	36	1.625	49.50	1.250	1.750	45.000	2.625	4.000	46.000
44	55.25	44.25	40	1.625	51.75	1.250	2.250	47.000	2.625	4.000	48.000
46	57.25	46.25	40	1.625	53.75	1.250	2.250	49.000	2.688	4.062	50.000
48	59.50	48.25	44	1.625	56.00	1.375	2.500	51.000	2.750	4.125	52.250
50	61.75	50.25	44	1.875	58.25	1.375	2.500	53.000	2.750	4.125	54.250
52	64.00	52.25	44	1.875	60.50	1.375	2.500	55.000	2.875	4.250	56.500
54	66.25	54.25	44	1.875	62.75	1.375	2.500	57.000	3.000	4.375	58.750
60	73.00	60.25	52	1.875	69.25	1.500	2.750	63.000	3.125	4.500	65.250
66	80.00	66.25	52	1.875	76.00	1.500	2.750	69.000	3.375	4.875	71.500
72	86.50	72.25	60	1.875	82.50	1.500	2.750	75.000	3.500	5.000	78.500
78	93.00	78.25	64	2.125	89.00	1.750	3.000	81.250	3.875	5.375	84.500
84	99.75	84.25	64	2.125	95.50	1.750	3.000	87.500	3.875	5.375	90.500
90	106.50	90.25	68	2.375	102.00	2.000	3.250	93.750	4.250	5.750	96.750
96	113.25	96.25	68	2.44	108.50	2.000	3.250	100.000	4.250	5.750	102.750