GOST FLANGE

GOST flanges, adhering to the Russian national standards set by the GOST (State Standard) system, offer a range of significant advantages for industrial applications. These flanges are renowned for their robust and reliable design, which is essential in demanding environments such as heavy industry, oil and gas, and chemical processing. One of the primary advantages of GOST flanges is their durability. Constructed from high-quality materials, these flanges are designed to withstand high pressures and extreme temperatures, ensuring long-term performance and minimal maintenance.

Another notable advantage is their standardization. GOST flanges are produced to precise specifications that are internationally recognized, facilitating ease of integration into existing systems and compatibility with other components. This standardization ensures consistency in performance and quality, which is crucial for maintaining safety and efficiency in complex systems. Additionally, the GOST standard provides clear guidelines on dimensions and tolerances, which simplifies the selection process and reduces the risk of errors during installation.

GOST flanges also offer versatility. Available in various sizes and pressure ratings, they can accommodate a wide range of applications and operational requirements. This flexibility makes them suitable for use in diverse industries, from power generation to water treatment. Furthermore, the availability of different flange types, such as slip-on, weld neck, and blind flanges, allows for customized solutions tailored to specific needs.

Overall, GOST flanges combine strength, reliability, and standardization, making them a preferred choice for industries that require durable and precise components. Their adherence to stringent standards and wide range of applications contribute to their effectiveness in maintaining the integrity and efficiency of critical systems.

What Is Gost Flanges

In the realm of piping systems and industrial applications, GOST flanges play a pivotal role in ensuring secure and leak-proof connections. The term "GOST" refers to a set of standards established by the Russian government, specifically the "GOsudarstvennyy STANDARD," which translates to "State Standard." These standards are crucial for various industries, particularly in countries that follow the GOST criteria, which include Russia and several former Soviet states.

GOST flanges come in several types and sizes, each designed to accommodate different applications and pressures. The primary function of these flanges is to connect pipes, valves, and other equipment seamlessly. They feature various drilling patterns, which align with corresponding bolts and ensure a tight seal. The accuracy in dimensions and tolerances associated with GOST flanges is vital for maintaining system integrity and efficiency.

Applications of GOST flanges are widespread, from oil and gas industries to water supply systems, due to their reliability and durability in challenging environments. They can be made from various materials, including carbon steel, stainless steel, and other alloys, providing flexibility depending on the specific demands of the application.

Moreover, GOST flanges are often subject to rigorous testing to ensure they meet the inherent safety and quality standards outlined by GOST regulations. This commitment to quality assurance makes GOST flanges a preferred choice for engineers and designers who prioritize safety and performance in their projects.

In conclusion, GOST flanges are an essential component of many industrial systems, offering secure, reliable connections i

n various applications. Understanding the specifications and standards related to GOST flanges is crucial for professionals in plumbing, construction, and engineering fields, as they aim to provide high-quality, efficient solutions within their projects.

Available Types of GOST Flange

1. Welded Neck Flanges (WN):

One of the most commonly used GOST flanges, welded neck flanges feature a long tapered neck that facilitates seamless welding to the pipe. This design enhances the strength of the connection and is ideal for high-pressure applications.

2. Blind Flanges (BL):

These GOST flanges are solid discs used to seal the end of a piping system or a vessel. Blind flanges allow for easy access to the system for inspection or maintenance, while preventing flow from escaping or contaminating the environment.

3. Slip-On Flanges (SO):

Characterized by their ease of installation, slip-on GOST flanges are slid over the pipe and then welded into place. They are suitable for lower-pressure applications and offer flexibility in alignment and position.

4. Socket Weld Flanges (SW):

These flanges have a socket in the center where the pipe can be inserted. Like slip-on flanges, they are beneficial in systems where space is limited but provide stronger joints due to the additional weld area.

5. Lap Joint Flanges (LJ):

Often used with a stub end, lap joint GOST flanges allow for ease of assembly and disassembly. They are particularly effective in applications requiring frequent access to the piping system.

Industries We Cater: GOST Flanges

In the world of industrial piping systems, standardization and quality are paramount. One essential component that meets these criteria is the GOST flange. These flanges, which comply with the State Standard of the Russian Federation (GOST), are widely used across various industries due to their reliability and robust construction. At our company, we cater to a diverse array of industries that require GOST flanges.

Oil and Gas Industry
The oil and gas sector is one of the largest users of GOST flanges. These flanges play a critical role in ensuring safe and efficient transportation of hydrocarbons. With stringent regulations and the need for high-pressure applications, GOST flanges provide the necessary durability and leak-tight sealing. Our products are designed to withstand the harshest conditions while maintaining optimal performance.

Chemical and Petrochemical Industries
In the chemical processing industry, compatibility with various chemicals is crucial. GOST flanges are manufactured to high standards, ensuring they can handle aggressive substances without compromising safety or structural integrity. Our range of GOST flanges supports a variety of temperature and pressure ratings, making them ideal for chemical reactors, storage tanks, and pipelines.

Power Generation
The power generation industry also extensively utilizes GOST flanges in their systems. From renewable energy plants to traditional energy sources, these flanges are critical in steam, gas, and hydraulic infrastructures. Their robust design ensures operational reliability, which is essential for uninterrupted power supply.

Construction and Infrastructure
In the construction sector, GOST flanges are commonly used in plumbing and HVAC systems. Their adaptability and ease of installation make them a preferred choice among engineers and contractors. By ensuring compliance with international standards, GOST flanges contribute to the longevity and efficiency of various infrastructure projects.

Our commitment to delivering high-quality GOST flanges positions us as a trusted partner across multiple industries. By understanding the unique needs of each sector, we continue to provide solutions that enhance operational efficiency and safety. If you are in need of flange wholesale tailored to your industry-specific applications, reach out to us today.

GOST 12820-80 PN6 STEEL PLAIN WELDED FLANGES UNIT:mm

Nomencatlure	Dimensions,mm								Weight,kg
Nomencatlure	D	D,	D2	d,	b	h	n	d	Weight,kg
P=0.6Mpa(6kgf/cm²)
1-10-6	75	50	35	15	10	2	4	11	0.31
1-15-6	80	55	40	19	10	2	4	11	0.33
1-20-6	90	65	50	26	12	2	4	11	0.53
1-25-6	100	75	60	33	12	2	4	11	0.64
1-32-6	120	90	70	39	13	2	4	14	1.01
1-40-6	130	100	80	46	13	3	4	14	1.21
1-50-6	140	110	90	59	13	3	4	14	1.33
1-65-6	160	130	110	78	13	3	4	14	1.63
1-80-6	185	150	128	91	15	3	4	18	2.44
1-100-6	205	170	148	110	15	3	4	18	2.85
1-125-6	235	200	178	135	17	3	8	18	3.88
1-150-6	260	225	202	161	17	3	8	18	4.39
1-175-6	290	255	232	196	19	3	8	18	5.36
1-200-6	315	280	258	222	19	3	8	18	5.89
1-225-6	340	305	282	245	19	3	8	18	6.60
1-250-6	370	335	312	273	20	3	12	18	7.67
1-300-6	435	395	365	325	20	4	12	22	10.28
1-350-6	485	445	415	377	22	4	12	22	12.58
1-400-6	535	495	465	426	24	4	16	22	15.20
1-450-6	590	550	520	480	24	4	16	22	17.25
1-500-6	640	600	570	530	25	4	16	22	19.72
1-600-6	755	705	670	630	25	5	20	26	26.24
1-700-6	860	810	775	720	27	5	24	26	36.68
1-800-6	975	920	880	820	27	5	24	30	46.14
1-900-6	1075	1020	980	920	29	5	24	30	55.10
1-1000-6	1175	1120	1080	1020	31	5	28	30	64.36
1-1200-6	1400	1340	1295	1220	34	5	32	33	99.03

GOST 12820-80 PN10 STEEL PLAIN WELDED FLANGES UNIT:mm

Nomencatlure	Dimensions,mm								Weight,kg
Nomencatlure	D	D,	D2	d,	b	h	n	d	Weight,kg
Pem=1.0Mpa(10kgf/cm²)
1-10-10	90	60	42	15	10	2	4	14	0.46
1-15-10	95	65	47	19	10	2	4	14	0.51
1-20-10	105	75	58	26	12	2	4	14	0.74
1-25-10	115	85	68	33	12	2	4	14	0.89
1-32-10	135	100	78	39	14	2	4	18	1.40
1-40-10	145	110	88	46	15	3	4	18	1.71
1-50-10	160	125	102	59	15	3	4	18	2.06
1-65-10	180	145	122	78	17	3	4	18	2.80
1-80-10	195	160	133	91	17	3	4	18	3.19
1-100-10	215	180	158	110	19	3	8	18	3.96
1-125-10	245	210	184	135	21	3	8	18	5.40
1-150-10	280	240	212	161	21	3	8	22	6.62
1-175-10	310	270	242	196	21	3	8	22	7.32
1-200-10	335	295	268	222	21	3	8	22	8.05
1-225-10	365	325	295	245	21	3	8	22	9.30
1-250-10	390	350	320	273	23	3	12	22	10.65
1-300-10	440	400	370	325	24	4	12	22	12.90
1-350-10	500	460	430	377	24	4	16	22	15.85
1-400-10	565	515	482	426	26	4	16	26	21.56
1-450-10	615	565	532	480	26	4	20	26	22.76
1-500-10	670	620	585	530	28	4	20	26	27.70
1-600-10	780	725	685	630	31	5	20	30	39.40
1-700-10	895	840	800	720	34	5	24	30	59.46
1-800-10	1010	950	905	820	37	5	24	33	79.16
1-900-10	1110	1050	1005	920	40	5	28	33	94.13
1-1000-10	1220	1160	1110	1020	43	5	28	33	118.43
1-1200-10	1455	1380	1330	1222	51	5	32	39	197.44

GOST 12820-80 PN16 STEEL PLAIN WELDED FLANGES UNIT:mm

Nomencatlure	Dimensions,mm								Weight,kg
Nomencatlure	D	D1	D2	d1	b	h	n	d	Weight,kg
P=1.6Mpa(16kgf/cm2)
1-10-16	90	60	42	15	12	2	4	14	0.54
1-15-16	95	65	47	19	12	2	4	14	0.61
1-20-16	105	75	58	26	14	2	4	14	0.86
1-25-16	115	85	68	33	16	2	4	14	1.17
1-32-16	135	100	78	39	16	2	4	18	1.58
1-40-16	145	110	88	46	17	3	4	18	1.96
1-50-16	160	125	102	59	19	3	4	18	2.58
1-65-16	180	145	122	78	21	3	4	18	3.42
1-80-16	195	160	133	91	21	3	4	18	3.71
1-100-16	215	180	158	110	23	3	8	18	4.73
1-125-16	245	210	184	135	25	3	8	18	6.38
1-150-16	280	240	212	161	25	3	8	22	7.81
1-175-16	310	270	242	196	25	3	8	22	8.64
1-200-16	335	295	268	222	27	3	12	22	10.10
1-225-16	365	325	295	245	27	3	12	22	11.70
1-250-16	405	355	320	273	28	3	12	26	14.49
1-300-16	460	410	370	325	28	4	12	26	17.78
1-350-16	520	470	430	377	30	4	16	26	22.88
1-400-16	580	525	482	426	34	4	16	30	31.00
1-450-16	640	585	532	480	38	4	20	30	39.64
1-500-16	710	650	585	530	44	4	20	33	57.01
1-600-16	840	770	685	630	45	5	20	39	80.03
1-700-16	910	840	800	720	47	5	24	39	84.21
1-800-16	1020	950	905	820	49	5	24	39	104.41
1-900-16	1120	1050	1005	920	54	5	28	39	128.60
1-1000-16	1255	1170	1110	1020	58	5	28	45	179.37
1-1200-16	1485	1390	1330	1220	71	5	32	52	297.78

GOST 12820-80 PN25 STEEL PLAIN WELDED FLANGES UNIT:mm

Nomencatlure	Dimensions,mm								Weight,kg
Nomencatlure	D	D1	D2	di	b	h	n	d	Weight,kg
Pnom=2.5Mpa(25kgf/cm2)
1-10-25	90	60	42	15	14	2	4	14	0.63
1-15-25	95	65	47	19	14	2	4	14	0.70
1-20-25	105	75	58	26	16	2	4	14	0.98
1-25-25	115	85	68	33	16	2	4	14	1.17
1-32-25	135	100	78	39	18	2	4	18	1.77
1-40-25	145	110	88	46	19	3	4	18	2.18
1-50-25	160	125	102	59	21	3	4	18	2.71
1-65-25	180	145	122	78	21	3	8	18	3.22
1-80-25	195	160	133	91	23	3	8	18	4.06
1-100-25	230	190	158	110	25	3	8	22	5.92
1-125-25	270	220	184	135	27	3	8	26	8.26
1-150-25	300	250	212	161	27	3	8	26	10.12
1-200-25	360	310	278	222	29	3	12	26	13.34
1-250-25	425	370	335	273	31	3	12	30	18.90
1-300-25	485	430	390	325	32	4	16	30	23.95
1-350-25	550	490	450	377	38	4	16	33	34.35
1-400-25	610	550	505	426	40	4	16	33	44.62
1-500-25	730	660	615	530	48	4	20	39	67.30
1-600-25	840	770	720	630	49	5	20	39	90.87
1-800-25	1075	990	930	820	63	5	24	45	181.43

GOST 12821-80 PN6 STEEL PLAIN WELDED FLANGES UNIT:mm

Nomencatlure	Dimensions,mm											Weight, Kg
Nomencatlure	D	D1	D2	h	d1	b	h4	Dm	Dn	n, Number of holes	d	Weight, Kg
Pnom=0.6Mpa(0.6 kgf/cm²)
1-10-6	75	50	35	2	8	10	27	22	15	4	11	0.34
1-15-6	80	55	40	2	12	10	28	28	19	4	11	0.40
1-20-6	90	65	50	2	18	10	30	36	26	4	11	0.53
1-25-6	100	75	60	2	25	12	30	42	33	4	11	0.76
1-32-6	120	90	70	2	31	12	33	50	39	4	14	1.10
1-40-6	130	100	80	3	38	12	35	60	46	4	14	1.36
1-50-6	140	110	90	3	49	12	35	70	58	4	14	1.53
1-65-6	160	130	110	3	66	12	35	88	77	4	14	1.97
1-80-6	185	150	128	3	78	13	37	102	90	4	18	2.76
1-10-6	205	170	148	3	96	13	38	122	110	4	18	3.35
1-125-6	235	200	178	3	121	15	40	148	135	8	18	4.66
1-150-6	260	225	202	3	146	15	43	172	161	8	18	5.37
1-175-6	290	255	232	3	177	17	47	210	196	8	18	7.32
1-200-6	315	280	258	3	202	17	50	235	222	8	18	8.37
1-225-6	340	305	282	3	226	17	50	260	248	8	18	9.45
1-250-6	370	335	312	3	254	18	50	288	278	12	18	10.99
1-300-6	435	395	365	4	303	18	50	340	330	12	22	14.82
1-350-6	485	445	415	4	351	18	50	390	382	12	22	17.69
1-400-6	535	495	465	4	398	18	50	440	432	16	22	20.55
1-450-6	590	550	520	4	450	18	50	494	484	16	22	23.63
1-500-6	640	600	570	4	501	19	50	545	535	16	22	26.63
1-600-6	755	705	670	5	602	19	55	650	636	20	26	35.79
1-700-6	860	810	775	5	692	19	55	740	726	24	26	44.31
1-800-6	975	920	880	5	792	19	60	844	826	24	30	56.17
1-900-6	1075	1020	980	5	892	21	60	944	926	24	30	66.79
1-1000-6	1175	1120	1080	5	992	21	60	1044	1028	28	30	73.51
1-1200-6	1400	1340	1295	5	1192	23	70	1248	1228	32	33	111.43

GOST 12821-80 PN10 STEEL PLAIN WELDED FLANGES UNIT:mm

Nomencatlure	Dimensions,mm											Weight, Kg
Nomencatlure	D	D1	D2	h	d1	b	h4	Dm	Dn	n, Number of holes	d	Weight, Kg
Pnom=1.0Mpa(1 kgf/cm²)
1-10-10	90	60	42	2	8	10	33	25	15	4	14	0.50
1-15-10	95	65	47	2	12	10	33	30	19	4	14	0.58
1-20-10	105	75	58	2	18	12	36	38	26	4	14	0.87
1-25-10	115	85	68	2	25	12	38	45	33	4	14	1.05
1-32-10	135	100	78	2	31	13	40	55	39	4	18	1.54
1-40-10	145	110	88	3	38	13	42	62	46	4	18	1.83
1-50-10	160	125	102	3	49	13	42	76	58	4	18	2.26
1-65-10	180	145	122	3	66	15	45	94	77	4	18	3.17
1-80-10	195	160	133	3	78	15	47	105	90	4	18	3.67
1-100-10	215	180	158	3	96	17	48	128	110	8	18	4.70
1-125-10	245	210	184	3	121	19	57	156	135	8	18	6.71
1-150-10	280	240	212	3	146	19	57	180	161	8	22	8.17
1-175-10	310	270	242	3	177	19	57	210	196	8	22	9.71
1-200-10	335	295	268	3	202	19	58	240	222	8	22	11.35
1-225-10	365	325	295	3	226	19	60	268	248	8	22	13.24
1-250-10	390	350	320	3	254	21	60	290	278	12	22	14.64
1-300-10	440	400	370	4	303	22	60	345	330	12	22	18.66
1-350-10	500	460	430	4	351	22	60	400	382	16	22	24.00
1-400-10	565	515	482	4	398	22	60	445	432	16	26	30.00
1-450-10	615	565	532	4	450	22	65	500	484	20	26	33.33
1-500-10	670	620	585	4	501	24	65	550	535	20	26	39.20
1-600-10	780	725	685	5	602	24	65	650	636	20	30	48.80
1-700-10	895	840	800	5	692	25	65	744	726	24	30	65.26
1-800-10	1010	950	905	5	792	27	75	850	826	24	33	87.24
1-900-10	1110	1050	1005	5	892	29	80	950	926	28	33	103.02
1-1000-10	1220	1160	1110	5	992	29	80	1050	1028	28	33	119.19
1-1200-10	1455	1380	1330	5	1192	33	90	1256	1228	32	39	179.91

GOST 12821-80 PN16 STEEL PLAIN WELDED FLANGES UNIT:mm

Nomencatlure	Dimensions,mm											Weight, Kg
Nomencatlure	D	D1	D2	h	d1	b	h4	Dm	Dn	n, Number of holes	d	Weight, Kg
Pnom=1.6Mpa(16kgf/cm²)
1-10-16	90	60	42	2	8	12	33	26	15	4	14	0.59
1-15-16	95	65	47	2	12	12	33	30	19	4	14	0.68
1-20-16	105	75	58	2	18	12	36	28	26	4	14	0.87
1-25-16	115	85	68	2	25	12	38	45	33	4	14	1.05
1-32-16	135	100	78	2	31	13	40	55	39	4	18	1.54
1-40-16	145	110	88	3	38	13	42	64	46	4	18	1.85
1-50-16	160	125	102	3	49	13	45	76	58	4	18	2.28
1-65-16	180	145	122	3	66	15	47	94	77	4	18	3.19
1-80-16	195	160	133	3	78	17	50	110	90	4	18	4.21
1-100-16	215	180	158	3	96	17	50	130	110	8	18	4.90
1-125-16	245	210	184	3	121	19	57	156	135	8	18	6.75
1-150-16	280	240	212	3	146	19	57	180	161	8	22	8.3
1-175-16	310	270	242	3	177	21	57	210	196	8	22	10.37
1-200-16	335	295	268	3	202	21	58	240	222	12	22	11.79
1-225-16	365	325	295	3	226	21	65	268	248	12	22	14.12
1-250-16	405	355	320	3	254	23	65	292	278	12	26	17.36
1-300-16	460	410	370	4	303	24	66	346	330	12	26	22.76
1-350-16	520	470	430	4	351	28	70	400	382	16	26	32.04
1-400-16	580	525	482	4	398	32	75	450	432	16	30	43.00
1-450-16	640	585	532	4	450	34	85	506	484	20	30	54.00
1-500-16	710	650	585	4	501	38	90	559	535	20	33	70.97
1-600-16	840	770	685	5	602	41	90	660	636	20	39	99.30
1-700-16	910	840	800	5	692	43	95	750	726	24	39	105.90
1-800-16	1020	950	905	5	792	45	95	850	826	24	39	130.57
1-900-16	1120	1050	1005	5	892	47	110	958	926	28	39	157.83
1-1000-16	1255	1170	1110	5	992	49	110	1060	1028	28	45	203.39
1-1200-16	1485	1390	1330	5	1192	51	125	1268	1228	32	52	284.94

GOST 12821-80 PN25 STEEL PLAIN WELDED FLANGES UNIT:mm

Nomencatlure	Dimensions,mm											Weight, Kg
Nomencatlure	D	D1	D2	h	d1	b	h4	Dm	Dn	n, Number of holes	d	Weight, Kg
Pnom=2.5Mpa(25kgf/cm²)
1-10-25	90	60	42	2	8	14	33	26	15	4	14	0.68
1-15-25	95	65	47	2	12	14	33	30	19	4	14	0.79
1-20-25	105	75	58	2	18	14	34	38	26	4	14	0.97
1-25-25	145	85	68	2	25	14	36	45	33	4	14	1.18
1-32-25	135	100	78	2	31	16	43	56	39	4	18	1.83
1-40-25	115	110	88	3	38	16	45	64	46	4	18	2.19
1-50-25	160	125	102	3	49	17	45	76	58	4	18	2.78
1-65-25	180	145	122	3	66	19	50	96	77	8	18	3.71
1-80-25	195	160	133	3	78	19	52	110	90	8	18	4.44
1-100-25	230	190	158	3	96	21	58	132	110	8	22	6.51
1-125-25	270	220	184	3	121	23	65	160	135	8	26	9.41
1-150-25	300	250	212	3	146	25	68	186	161	8	26	12.52
1-175-25	33C	280	242	3	177	25	70	216	196	12	26	13.88
1-200-25	360	310	278	3	202	27	75	245	222	12	26	17.44
1-225-25	395	340	305	3	226	29	75	270	248	12	30	21.56
1-250-25	425	370	335	3	254	29	75	300	278	12	30	24.40
1-300-25	485	430	390	4	303	32	80	352	330	16	30	33.29
1-350-25	550	490	450	4	351	36	85	406	382	16	33	46.57
1-400-25	610	550	505	4	398	40	100	464	432	16	33	64.81
1-450-25	660	600	555	4	450	42	100	515	484	20	33	72.26
1-500-25	730	660	615	4	500	44	100	570	535	20	39	88.91
1-600-25	840	770	720	5	600	49	115	670	636	20	39	123.70
1-700-25	960	875	820	5	690	53	125	766	726	24	45	166.81
1-800-25	1075	990	930	5	790	55	135	874	826	24	45	213.9
1-900-25	1185	1090	1030	5	892	57	145	980	926	28	52	213.90
1-1000-25	1315	1210	1140	5	992	59	150	1084	1028	28	56	312.12
1-1200-25	1525	1420	1350	5	1192	62	160	1288	1228	32	56	387.50

GOST 12821-80 PN40 STEEL PLAIN WELDED FLANGES UNIT:mm

Nomencatlure	Dimensions,mm											Weight, Kg
Nomencatlure	D	D1	D2	h	d1	b	h4	Dm	Dn	n, Number of holes	d	Weight, Kg
Pnom=4.0Mpa(40kgf/cm²)
1-10-40	90	60	42	2	8	14	33	26	15	4	14	0.68
1-15-40	95	65	47	2	12	14	33	30	19	4	14	0.79
1-20-40	105	75	58	2	18	14	34	38	26	4	14	0.97
1-25-40	115	85	68	2	25	14	36	45	33	4	14	1.18
1-32-40	135	100	78	2	31	16	43	56	39	4	18	1.83
1-40-40	145	110	88	3	38	16	45	64	46	4	18	2.19
1-50-40	160	125	102	3	48	17	45	76	58	4	18	2.81
1-65-40	180	145	122	3	66	19	50	96	77	8	18	3.71
1-80-40	195	160	133	3	78	21	55	112	90	8	18	4.8
1-100-40	230	190	158	3	96	23	65	138	110	8	22	7.4
1-125-40	270	220	184	3	120	25	65	160	135	8	26	10.00
1-150-40	300	250	212	3	145	27	68	186	161	8	26	13.03
1-175-40	350	295	242	3	177	33	85	226	196	12	30	20.75
1-200-40	375	320	285	3	200	35	85	250	222	12	30	24.44
1-25-40	415	355	315	3	226	37	95	280	248	12	33	31.33
1-250-40	445	385	345	3	252	39	98	310	278	12	33	37.59
1-300-40	510	450	410	4	301	42	112	368	330	16	33	57.10
1-350-40	570	510	465	4	351	48	116	418	382	16	33	70.34
1-400-40	655	585	535	4	398	54	135	480	432	16	39	106.76
1-450-40	680	610	560	4	448	56	135	530	484	20	39	107.00
1-500-40	755	670	615	4	495	58	140	580	535	20	45	132.33
1-600-40	890	795	735	5	595	58	140	686	636	20	52	180.95
1-700-40	995	900	810	5	695	63	160	790	726	24	52	228.25
1-800-40	1135	1030	960	5	795	71	190	908	826	24	56	343.69
1-900-40	1250	1140	1070	5	895	74	215	1024	926	28	56	436.54
1-1000-40	1360	1250	1180	5	995	77	235	1140	1028	28	56	540.75
1-1200-40	1575	1460	1380	5	1195	80	250	1350	1228	32	62	690.59

GOST 12821-80 PN40 STEEL PLAIN WELDED FLANGES UNIT:mm

Nomencatlure	Dimensions,mm											Weight, Kg
Nomencatlure	D	D1	D2	h	d1	b	h4	Dm	Dn	n, Number of holes	d	Weight, Kg
Pnom=6.3Mpa(63kgf/cm²)
1-10-63	100	70	42	2	8	16	46	34	15	4	14	1.03
1-15-63	105	75	47	2	12	16	46	38	19	4	14	1.15
1-20-63	125	90	58	2	18	18	54	48	26	4	18	1.80
1-25-63	135	100	68	2	25	20	56	52	33	4	18	2.30
1-32-63	150	110	78	2	31	21	60	64	39	4	22	2.94
1-40-63	165	125	88	3	37	21	65	74	46	4	22	3.75
1-50-63	175	135	102	3	47	23	67	86	58	4	22	4.63
1-65-63	200	160	122	3	64	25	72	106	77	8	22	6.29
1-80-63	210	170	133	3	77	27	72	120	90	8	22	7.22
1-100-63	250	200	158	3	94	29	77	140	110	8	26	10.71
1-125-63	295	240	184	3	118	33	95	172	135	8	30	17.13
1-150-63	340	280	212	3	142	35	105	206	161	8	33	24.60
1-175-63	370	310	212	3	174	39	105	232	196	12	33	28.61
1-200-63	405	345	285	3	198	41	110	264	222	12	33	36.60
1-225-63	430	370	315	3	222	43	115	290	248	12	33	42.54
1-250-63	470	400	345	3	246	45	115	316	278	12	39	50.89
1-300-63	530	460	410	4	294	50	120	370	330	16	39	68.15
1-350-63	595	525	465	4	342	56	140	430	382	16	39	98.68
1-400-63	670	585	535	4	386	62	155	484	432	16	45	135.80
1-500-63	800	705	615	4	485	66	165	594	535	20	52	192.74
1-600-63	925	820	735	5	585	71	180	704	636	20	56	269.27
1-700-63	1045	935	840	5	685	76	225	820	726	24	56	300.86
1-800-63	1165	1050	960	5	785	85	225	920	826	24	62	463.87
1-900-63	1285	1170	1070	5	885	88	265	1050	926	28	62	954.41
1-1000-63	1415	1290	1180	5	985	92	280	1160	1028	28	70	980.60
1-1200-63	1665	1530	1380	5	1185	95	315	1386	1228	32	78	1263.72

GOST 12821-80 PN100 STEEL PLAIN WELDED FLANGES UNIT:mm

Nomencatlure	Dimensions,mm											Weight, Kg
Nomencatlure	D	D1	D2	h	d1	b	h4	Dm	Dn	n, Number of holes	d	Weight, Kg
Pnom=10Mpa(100kgf/cm²)
1-10-100	100	70	42	2	8	16	43	34	15	4	14	1.02
1-15-100	105	75	47	2	12	18	46	38	19	4	14	1.26
1-20-100	125	90	58	2	18	20	51	48	26	4	18	1.98
1-25-100	135	100	68	2	25	22	56	52	33	4	18	2.48
1-32-100	150	110	78	2	31	22	60	64	39	4	22	3.05
1-40-100	165	125	88	3	37	23	67	76	46	4	22	4.06
1-50-100	195	145	102	3	45	25	68	86	58	4	26	6.03
1-65-100	220	170	122	3	62	29	80	110	77	8	26	8.52
1-80-100	230	180	133	3	75	31	87	124	90	8	26	9.91
1-100-100	265	210	158	3	92	35	97	146	110	8	30	14.65
1-125-100	310	250	184	3	112	39	112	180	135	8	33	23.32
1-150-100	350	290	212	3	136	43	125	214	161	12	33	32.87
1-175-100	380	320	242	3	166	45	125	246	196	12	33	39.00
1-200-100	430	360	285	3	190	51	140	276	222	12	39	54.24
1-225-100	470	400	315	3	212	53	155	312	248	12	39	71.19
1-250-100	500	430	345	3	236	57	160	340	278	12	39	85.24
1-300-100	585	500	410	4	284	66	180	400	330	16	45	127.78
1-350-100	655	560	465	4	332	72	195	460	382	16	52	170.94
1-400-100	715	620	535	4	376	76	200	510	432	16	52	216.44

GOST 12821-80 PN160 STEEL PLAIN WELDED FLANGES UNIT:mm

Nomencatlure	Dimensions,mm											Weight, Kg
Nomencatlure	D	D1	D2	h	d1	b	h4	Dm	Dn	n, Number of holes	d	Weight, Kg
Pnom=16Mpa(160kgf/cm²)
1-15-160	105	75	47	2	12	18	50	38	19	4	14	1.27
1-20-160	125	90	58	2	18	20	56	48	26	4	18	1.98
1-25-160	135	100	68	2	25	22	56	52	33	4	18	2.48
1-32-160	150	110	78	2	31	22	65	64	39	4	22	3.07
1-40-160	165	125	88	3	37	25	72	76	46	4	22	4.01
1-50-160	195	145	102	3	45	27	75	86	58	4	26	6.43
1-65-160	220	170	122	3	62	31	85	110	77	8	26	9.38
1-80-160	230	180	133	3	75	33	90	124	90	8	26	10.40
1-100-160	265	210	158	3	92	37	100	146	110	8	30	15.40
1-125-160	310	250	184	3	112	41	115	180	135	8	33	24.87
1-150-160	350	290	212	3	136	47	130	214	161	12	33	35.04
1-175-160	380	320	242	3	166	51	135	246	196	12	33	43.10
1-200-160	430	360	285	3	190	57	145	276	222	12	39	60.10
1-225-160	470	400	315	3	212	60	160	312	248	12	39	78.80
1-250-160	500	430	345	3	236	65	165	340	278	12	39	94.40
1-300-160	585	500	410	4	284	74	185	400	330	16	45	141.00