Name: Korean Standard Flanges
Brand: Arrow Piping
Availability: InStock

KS B1503 5k Flange - Dimensions

Nominal Diameter of Flanges	Outside Diameter of Flanges D	Flange Sectional Dimensions												Size Of Bolt	Welding
		Diameter of Bolt Circle C	Diameter Of Raised Face g	Inside Dia. Of Flange do	Outside Diameter Of Applicable Pipe	t	T	Hub Diameter		Radius r	Raised Face f	Hole Diameter Of H	Bolt Holes Number		W1	W2
								a	b						W1	W2
10	75	55	39	17.8	17.3	9	–	–	–	–	1	12	4	M10	5	2.5
15	80	60	44	22.2	21.7	9	–	–	–	–	1	12	4	M10	5	3
20	85	65	49	27.7	27.2	10	–	–	–	–	1	12	4	M10	5	3
25	95	75	59	34.5	34	10	–	–	–	–	1	12	4	M10	5	3
32	115	90	70	43.2	42.7	12	–	–	–	–	2	15	4	M12	6	3
40	120	95	75	49.1	48.6	12	–	–	–	–	2	15	4	M12	6	3
50	130	105	85	61.1	60.5	14					2	15	4	M12	6	3
65	155	130	110	77.1	76.3	14					2	15	4	M12	6	4
80	180	145	121	90	89.1	14					2	19	4	M16	6	4
90	190	155	131	102.6	101.6	14					2	19	4	M16	6	4
100	200	165	141	115.4	114.3	16					2	19	8	M16	7	4
125	235	200	176	141.2	139.8	16					2	19	8	M16	7	4
150	265	230	206	166.6	165.2	18					2	19	8	M16	7	5
175	300	260	232	192.1	190.7	18					2	23	8	M20	7.5	5
200	320	280	252	218	216.3	20					2	23	8	M20	8.5	6
225	345	305	277	243.7	241.8	20					2	23	12	M20	9	6
250	385	345	317	269.5	267.4	22					2	23	12	M20	10	6
300	430	390	360	321	318.5	22					3	23	12	M20	10	6
350	480	435	403	358.1	355.6	24					3	25	12	M22	12	7
400	540	495	463	409	406.4	24					3	25	16	M22	12	7
450	605	555	523	460	457.2	24	40	495	500	5	3	25	16	M22	12	7
500	655	605	573	511	508	24	40	546	552	5	3	25	20	M22	12	7
550	720	665	630	562	558.8	26	42	597	603	5	3	27	20	M24	12	7
600	770	715	680	613	609.6	26	44	648	654	5	3	27	20	M24	12	7
650	825	770	735	664	660.4	26	48	702	708	5	3	27	24	M24	12	7
700	875	820	785	715	711.2	26	48	751	758	5	3	27	24	M24	12	7
750	945	880	840	766	762	28	52	802	810	5	3	33	24	M30	12	7
800	995	930	890	817	812.8	28	52	854	862	5	3	33	24	M30	13	8
850	1045	980	940	868	863.6	28	54	904	912	5	3	33	24	M30	13	8
900	1095	1030	990	919	914.4	30	56	956	964	5	3	33	24	M30	13	8
1000	1195	1130	1090	1021	1016	32	60	1058	1066	5	3	33	28	M30	14	9

KS B1503 10k Flange - Dimensions

Nominal Pipe Size	Outside Diameter (O)	Thickness (T)	Raised Face Diameter (R)	Length Thru Hub (Y)	Point of Weld (A)	Hub Diameter (X)	Bore (B)	Approximate Weight (lbs)	Bolt Circle (C)	Number of Holes	Diameter of Holes
250	400	355	324	269.5	267.4	24	36	288	292	6	2	25	12	M22	10	6
300	445	400	368	321	318.5	24	38	340	346	6	3	25	16	M22	10	6
350	490	445	413	358.1	355.6	26	42	380	386	6	3	25	16	M22	12	7
400	560	510	475	409	406.4	28	44	436	442	6	3	27	16	M24	12	7
450	620	565	530	460	457.2	30	48	496	502	6	3	27	20	M24	14	8
500	675	620	585	511	508	30	48	548	554	6	3	27	20	M24	14	8
550	745	680	640	562	558.8	32	52	604	610	6	3	33	20	M30	15	9
600	795	730	690	613	609.6	32	52	656	662	6	3	33	24	M30	16	10
650	845	780	740	664	660.4	34	56	706	712	6	3	33	24	M30	16	10
700	905	840	800	715	711.2	34	58	762	770	6	3	33	24	M30	17	10
750	970	900	855	766	762	36	62	816	824	6	3	33	24	M30	18	11
800	1020	950	905	817	812.8	36	64	868	876	6	3	33	28	M30	19	12
850	1070	1000	955	868	863.6	36	66	920	928	6	3	33	28	M30	19	12
900	1120	1050	1005	919	914.4	38	70	971	979	6	3	33	28	M30	22	14
1000	1235	1160	1110	1021	1016	40	74	1073	1081	6	3	39	28	M36	22	14
*(1100)	1345	1270	1220	1123	1117.6	42	–	–	–	–	3	39	28	M36
*1200	1465	1380	1325	1225	1219.2	44	–	–	–	–	3	39	32	M36
*1350	1630	1540	1480	–	1371.6	48	–	–	–	–	3	45	36	M42
*1500	1795	1700	1635	–	1524	50	–	–	–	–	3	45	40	M42

KS B1503 16k Flange - Dimensions

Nominal Pipe Size	Outside Diameter (O)	Thickness (T)	Raised Face Diameter (R)	Length Thru Hub (Y)	Point of Weld (A)	Hub Diameter (X)	Bore (B)	Approximate Weight (lbs)	Bolt Circle (C)	Number of Holes	Diameter of Holes
250	400	355	324	269.5	267.4	24	36	288	292	6	2	25	12	M22	10	6
300	445	400	368	321	318.5	24	38	340	346	6	3	25	16	M22	10	6
350	490	445	413	358.1	355.6	26	42	380	386	6	3	25	16	M22	12	7
400	560	510	475	409	406.4	28	44	436	442	6	3	27	16	M24	12	7
450	620	565	530	460	457.2	30	48	496	502	6	3	27	20	M24	14	8
500	675	620	585	511	508	30	48	548	554	6	3	27	20	M24	14	8
550	745	680	640	562	558.8	32	52	604	610	6	3	33	20	M30	15	9
600	795	730	690	613	609.6	32	52	656	662	6	3	33	24	M30	16	10
650	845	780	740	664	660.4	34	56	706	712	6	3	33	24	M30	16	10
700	905	840	800	715	711.2	34	58	762	770	6	3	33	24	M30	17	10
750	970	900	855	766	762	36	62	816	824	6	3	33	24	M30	18	11
800	1020	950	905	817	812.8	36	64	868	876	6	3	33	28	M30	19	12
850	1070	1000	955	868	863.6	36	66	920	928	6	3	33	28	M30	19	12
900	1120	1050	1005	919	914.4	38	70	971	979	6	3	33	28	M30	22	14
1000	1235	1160	1110	1021	1016	40	74	1073	1081	6	3	39	28	M36	22	14
*(1100)	1345	1270	1220	1123	1117.6	42	–	–	–	–	3	39	28	M36
*1200	1465	1380	1325	1225	1219.2	44	–	–	–	–	3	39	32	M36
*1350	1630	1540	1480	–	1371.6	48	–	–	–	–	3	45	36	M42
*1500	1795	1700	1635	–	1524	50	–	–	–	–	3	45	40	M42

KS B1503 20k Flange - Dimensions

Nominal Pipe Size	Outside Diameter (O)	Thickness (T)	Raised Face Diameter (R)	Length Thru Hub (Y)	Point of Weld (A)	Hub Diameter (X)	Bore (B)	Approximate Weight (lbs)	Bolt Circle (C)	Number of Holes	Diameter of Holes
250	400	355	324	269.5	267.4	24	36	288	292	6	2	25	12	M22	10	6
300	445	400	368	321	318.5	24	38	340	346	6	3	25	16	M22	10	6
350	490	445	413	358.1	355.6	26	42	380	386	6	3	25	16	M22	12	7
400	560	510	475	409	406.4	28	44	436	442	6	3	27	16	M24	12	7
450	620	565	530	460	457.2	30	48	496	502	6	3	27	20	M24	14	8
500	675	620	585	511	508	30	48	548	554	6	3	27	20	M24	14	8
550	745	680	640	562	558.8	32	52	604	610	6	3	33	20	M30	15	9
600	795	730	690	613	609.6	32	52	656	662	6	3	33	24	M30	16	10
650	845	780	740	664	660.4	34	56	706	712	6	3	33	24	M30	16	10
700	905	840	800	715	711.2	34	58	762	770	6	3	33	24	M30	17	10
750	970	900	855	766	762	36	62	816	824	6	3	33	24	M30	18	11
800	1020	950	905	817	812.8	36	64	868	876	6	3	33	28	M30	19	12
850	1070	1000	955	868	863.6	36	66	920	928	6	3	33	28	M30	19	12
900	1120	1050	1005	919	914.4	38	70	971	979	6	3	33	28	M30	22	14
1000	1235	1160	1110	1021	1016	40	74	1073	1081	6	3	39	28	M36	22	14
*(1100)	1345	1270	1220	1123	1117.6	42	–	–	–	–	3	39	28	M36
*1200	1465	1380	1325	1225	1219.2	44	–	–	–	–	3	39	32	M36
*1350	1630	1540	1480	–	1371.6	48	–	–	–	–	3	45	36	M42
*1500	1795	1700	1635	–	1524	50	–	–	–	–	3	45	40	M42

Korean industrial flanges Standards

Korean industrial flanges are governed by several standards that ensure their compatibility, durability, and performance in various industrial applications. These standards are primarily set by Korean Standards (KS) and align with JIS (Japanese Industrial Standards) for many flange types. The key Korean industrial flange standards include:

1. KS B 1501 - Steel Flanges

Covers design, dimensions, and material requirements for steel flanges used in pressure piping systems. Common types include weld neck, slip-on, blind, and socket weld flanges, primarily used in oil & gas, petrochemical, and power industries.

2. KS D 1501 - Flanges for Gas Pipelines

Specifies materials and pressure ratings for flanges used in gas pipelines to ensure secure seals and reliable performance.

3. JIS B 2220 - Flanges for Pipes

Defines flange dimensions, materials, and pressure ratings, closely aligning with ASME B16.5. Types include weld neck, slip-on, blind, threaded, and socket weld, with pressure classes like 150, 300, and 600.

4. KS B 1502 - Cast Iron Flanges

Focuses on cast iron flanges for moderate pressure systems, typically used in water, sewage, and other lower-pressure fluids.

5. JIS B 2311 - Flanges for High-Pressure Applications

Specifies flanges designed to withstand high pressure and temperature, used in critical systems in oil, gas, and petrochemical industries.

6. KS F 5103 - Stainless Steel Flanges

Details material and performance requirements for stainless steel flanges, ideal for high-corrosion environments in industries like chemical processing and pharmaceuticals.

WHY Arrow Piping Solutions For Korean weld neck flanges !

Adherence to Korean Standards

Arrow Piping Solutions ensures all Korean flanges meet the rigorous standards such as KS B 1501, KS D 1501, and JIS B 2220. Our flanges are designed to meet specific dimensional, material, and pressure class requirements, ensuring reliability and durability in industrial applications.

Wide Range of Flanges

We offer a comprehensive range of Korean flanges, including weld neck, slip-on, blind, and socket weld flanges, designed for various industries such as oil & gas, petrochemical, and power generation.

Proven Industry Expertise

With years of experience in manufacturing and supplying industrial flanges, Arrow Piping Solutions has built a reputation for delivering quality products and solutions tailored to our clients' needs.

Competitive Pricing and Timely Delivery

We offer competitive pricing and ensure timely delivery across all our target industries, including oil & gas, petrochemical, power, chemical, and water treatment.

What types of Korean flanges are available?

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Weld neck flanges

Slip-on flanges

Blind flanges

Socket weld flanges

Are Korean flanges compatible with other international standards?

Yes, Korean flanges are often compatible with other international standards, such as ASME and DIN, due to the similarities in their design, dimensions, and pressure class ratings. However, it’s important to verify compatibility for specific applications.

Can Korean flanges be customized?

Yes, Korean flanges can be customized in terms of size, material, and pressure class to meet the specific needs of your project. Whether you require custom dimensions, higher pressure ratings, or special material grades, manufacturers like Arrow Piping Solutions can accommodate your requests.

Korean Standard Flange