SABS/SANS 1123 Table 1000/3 Flange

Description

SABS/SANS 1123 Table 1000/3 Flange

The SABS/SANS 1123 Table 1000/3 Flange is a widely used standard for flanges in South Africa, governed by the South African Bureau of Standards (SABS) and the South African National Standards (SANS). These flanges are designed for various industrial applications, including waterworks, petrochemical, marine, and construction industries. The SANS 1123 standard specifies steel flanges for pipes, ensuring compatibility, durability, and safety. Among the different tables within SANS 1123, Table 1000/3 refers to a specific type of flange used in medium-pressure applications.

Key Specifications

1. Pressure Rating: Typically rated for 1000 kPa (10 bar) pressure applications.
2. Size Range: Available in nominal bore sizes ranging from  10 NB to 600 NB
3. Material Composition: Manufactured in materials such as Carbon Steel, Stainless Steel, and Alloy Steel.
4. Face Type: Commonly available in Raised Face (RF) and Flat Face (FF).
5. Drilling Specifications: The flange has a unique bolt-hole drilling pattern suitable for specific piping applications.
6. Connection Type: Available in weld neck, slip-on, blind, and threaded types.

Types of SABS/SANS 1123 Table 1000/3 Flanges

1. Weld Neck Flange (WN)

2. Slip-On Flange (SO)

3. Blind Flange (BL)

4. Threaded Flange (TH)

5. Lap Joint Flange (LJ)

SABS/SANS 1123 Table 1000/3 Flange Dimensions

NB	Pipe O.D.	Flange							Raised Face		Bolt	Drilling			Neck			Boss
	d1	D	b	b1	b2	b3	h	h1	d4	f		No.	d2	k	d3	h2	r	d5
10	17.2	90	8	10	8	10	14	35	40	2	M12	4	14	60	28	6	4	30
15	21.3	95	8	10	8	10	14	35	45	2	M12	4	14	65	32	6	4	35
20	26.9	105	8	10	8	10	16	38	58	2	M12	4	14	75	40	6	4	45
25	33.7	115	8	10	8	10	16	38	68	2	M12	4	14	85	46	6	4	52
32	42.4	140	10	10	10	10	20	40	78	2	M16	4	18	100	56	6	6	60
40	48.3	150	10	10	10	10	20	42	88	3	M16	4	18	110	64	7	6	70
50	60.3	165	12	10	10	12	20	45	102	3	M16	4	18	125	75	8	6	85
65	76.1	185	12	12	12	12	26	45	122	3	M16	4	18	145	90	10	6	105
80	88.9	200	14	12	12	14	26	50	138	3	M16	8	18	160	105	10	8	118
100	114.3	220	14	12	12	14	32	52	158	3	M16	8	18	180	131	12	8	140
*125	139.7	250	16	14	14	16	36	55	188	3	M16	8	18	210	156	12	8	168
150	168.3	285	18	16	16	18	38	55	212	3	M20	8	22	240	184	12	10	195
*175	193.7	315	18	16	-	18	-	60	242	3	M20	8	22	270	210	12	10	-
200	219.1	340	18	18	-	18	-	62	268	3	M20	8	22	295	235	16	10	-
*225	244.5	370	18	18	-	18	-	62	290	3	M20	8	22	325	265	16	10	-
250	273	395	20	20	-	20	-	68	320	3	M20	12	22	350	292	16	12	-
300	323.9	445	22	22	-	22	-	68	370	4	M20	12	22	400	344	16	12	-
350	355.6	505	26	25	-	25	-	68	430	4	M20	16	22	460	385	16	12	-
400	406.4	565	26	25	-	25	-	72	482	4	M24	16	26	515	400	16	12	-
450	457.2	615	28	30	-	30	-	72	532	4	M24	20	26	565	492	16	12	-
500	508	670	28	32	-	32	-	75	585	4	M24	20	26	620	542	16	12	-
550	559	730	28	35	-	35	-	80	635	5	M24	20	26	675	592	18	12	-
600	609.6	780	28	38	-	38	-	80	685	5	M24	20	26	725	642	18	12

Manufacturing Process

The manufacturing of these flanges involves several crucial steps to ensure quality and compliance with standards.

1. Raw Material Selection

• High-quality steel billets or plates are sourced.
• Material composition is tested for compliance.

2. Forging & Casting

• The material is heated and shaped using forging or casting methods.
• Enhances strength and durability.

3. Machining

• The flange undergoes precision machining to achieve desired dimensions.
• Bolt holes and faces are prepared according to specifications.

4. Heat Treatment

• Stress relieving and normalizing processes improve mechanical properties.
• Enhances resistance to wear and pressure.

5. Surface Treatment & Coating

• Anti-corrosion coatings, galvanization, or painting is applied.
• Ensures longevity and resistance to environmental factors.

6. Quality Inspection & Testing

• Non-destructive testing (NDT) such as ultrasonic and radiographic testing is performed.
• Dimensional and pressure testing ensures compliance with standards.

Applications

1. Water Treatment Plants

2. Oil & Gas Industry

3. Petrochemical Plants

4. Marine & Shipbuilding

5. Power Generation