GOST 949-73

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  ГОСТ 949-73

GOST 949−73 steel Cylinders for small and medium volume for gases at R (p)<=19,6 MPa (200 kgf/sq sm). Technical specifications (with Changes 1-5 N)

GOST 949−73

Group В66

INTERSTATE STANDARD

STEEL CYLINDERS for SMALL AND MEDIUM VOLUME FOR GASES AT 19.6 MPa (200 kgf/cm)

Specifications

Small and medium volume steel cylinders for gases for at 19.6 MPa (200 kgf/sm). Specifications

ISS 23.020.30
GST 14 1200

Date of introduction 1975−01−01

The decision of the State standards Committee of the USSR Council of Ministers dated 19 Dec 1973 N 2717 date of introduction is established 01.01.75

The expiration time limit is removed by the Resolution of Gosstandart of the USSR from 14.08.91 N 1352

REPLACE GOST 949−57

EDITION (December 2002) with Changes in N 1, 2, 3, 4, 5, approved in October, 1976, October 1980, February 1982, June 1986, April 2001 (IUS 11−76, 1−81, 5−82, 10−86, 6−2001), and Amendment (ICS 8−2002).

Revised (as of may 2008)

Change No. 5 adopted by the Interstate Council for standardization, Metrology and certification (Protocol No. 12, 21.11.97)

The adoption of the changes voted:

The name of the state	The name of the national authority for standardization
The Republic Of Azerbaijan	Azgosstandart
The Republic Of Armenia	Armastajad
The Republic Of Belarus	Gosstandart Of The Republic Of Belarus
The Republic Of Kazakhstan	Gosstandart Of The Republic Of Kazakhstan
The Kyrgyz Republic	Kyrgyzstandard
The Republic Of Moldova	Moldovastandart
Russian Federation	Gosstandart Of Russia
The Republic Of Tajikistan	Tajikstandart
Turkmenistan	Glavgosekspertiza «Turkmenstandartlary»
The Republic Of Uzbekistan	Standards
Ukraine	Gosstandart Of Ukraine

This standard applies to tanks made of carbon steel and alloy steel small volume to 12 liters and the average amount from 20 to 50 liters with a working pressure up to 19.6 MPa (200 kgf/cm) made from seamless pipe and is designed for storage and transportation of compressed, liquefied and dissolved gases at temperatures from minus 50 to plus 60 °C.

Requirements* product safety is set out in PP.1.2, 1.4, 2.2, 4.1, 4.4, 4.5, 4.6, 4.8.
________________
* Correction valid only on the territory of the Russian Federation.

(Changed edition, Rev. N 4, 5, Amendment).

1A. NORMATIVE REFERENCES

The present standard features references to the following standards:

GOST 2991−85 wooden disposable Boxes for loads up to 500 kg. General specifications

GOST 6357−81 Basic norms of interchangeability. Pipe thread cylindrical

GOST 9454−78 Metals. Test method for impact strength at low, room and elevated temperatures

GOST 9909−81 Basic norms of interchangeability. The threaded valves and cylinders for gases

GOST 10006−80 (ISO 6892−84) of the Pipe metal. Test method tensile

GOST 14192−96 Marking of cargo

GOST 15150−69 Machines, instruments and other technical products. Versions for different climatic areas. Categories, conditions of use, storage and transportation of the impact of climatic factors of the external environment

GOST 18477−79 Containers are universal. The types, basic parameters and dimensions

GOST 21140−88 Tara. System sizes

GOST 22352−77* the manufacturer’s Warranty. The establishment and calculation of the guarantee terms in the standards and technical conditions. General provisions

________________

* No longer in force in the territory of the Russian Federation.

GOST 24998−81 Gauges for tapered thread valves and cylinders for gases. Tolerances

Rules of arrangement and safe operation vessels working under pressure

Sec. 1A. (Added, Rev. N 5).

1. BASIC PARAMETERS AND DIMENSIONS

1.1. Cylinders must be manufactured for a working pressure of 9,8; 14,7; 19,6 MPa (100, 150, 200 kgf/cm) of carbon steel and for working pressure of 14.7 and 19.6 MPa (150 and 200 kg/cm) of stainless steel.

Steel grade is chosen by the manufacturer of the cylinders in accordance with the list of brands provided in the Rules of arrangement and safe operation vessels working under pressure.

1.2. Main parameters and sizes of cylinders shall be as specified in the drawing and in the table.1. The size of the bevel neckline 1,5h45°.

By agreement between the consumer and the manufacturer is allowed to produce cylinders with a concave bottom.

Main parameters and sizes of cylinders

1 — support Shoe; 2 — liner; 3 — ring filler cap, 4 — valve; 5 — pressure relief cap

Table 1

Dimensions in mm

The volume of the Bal — Lona, l	The diameter of the cylinder- ndri — cal part	The wall thickness of the cylinder pressure, MPa (kgf/cm), not less					The length of the housing cylinder pressure, MPa (kgf/cm)					Mass of cylinder pressure MPa (kgf/cm), kg
carbon steel			from legero — bath steel		carbon steel			from legero — bath steel		carbon steel			from legero — bath steel
9,8 (100)	Of 14.7 (150)	19,6 (200)	Of 14.7 (150)	19,6 (200)	9,8 (100)	Of 14.7 (150)	19,6 (200)	Of 14.7 (150)	19,6 (200)	9,8 (100)	Of 14.7 (150)	19,6 (200)	Of 14.7 (150)	19,6 (200)
0,4	70	1,6	2,2	2,9	1,6	1,9	165	170	One hundred seventy five	165	165	0,6	0,8	1,0	0,6	0,7
0,7	255	260	270	255	255	0,9	1,2	1,5	0,9	1,0
1,0	89	1,9	2,8	3,6	1,9	2,5	240	250	255	240	245	1,2	1,8	2,3	1,2	1,6
1,3	295	305	315	295	300	1,5	2,2	2,8	1,5	1,9
2,0	425	440	455	425	435	2,1	3,1	4,0	2,1	2,7
2,0	108	2,4	3,4	4,4	2,4	3,0	320	330	340	320	325	2,5	3.7 V	4,7	2,5	3,1
3,0	445	460	480	445	455	3,4	5,0	6,4	3,4	4,3
3,0	140	3,1	4,4	5,7	3,1	3,9	310	325	335	310	320	4,1	6,0	7,9	4,1	5,3
4,0	385	400	415	385	395	5,0	7,3	9,6	5,0	6,5
5,0	460	475	495	460	470	5,8	8,5	11,4	5,8	7,6
6,0	535	555	575	535	550	6,7	9,8	13,1	6,7	8,8
7,0	610	630	660	610	625	7,6	11.1 V	14,9	7,6	9,9
8,0	140	3,1	4,4	5,7	3,1	3,9	680	710	740	680	700	8,5	12,4	16,6	8,5	11.1 V
10,0	830	865	900	830	850	10,2	15,0	20,1	10,2	13,4
12,0	975	1020	1060	975	1005	11,9	17,6	23,5	11,9	15,6
20,0	219	5,2	6,8	8,9	5,2	6,0	Seven hundred thirty	740	770	730		28,5	32,3	42,0	28,5
25,0	890	900	935	890		34,0	38,7	50,5	34,0
32,0	1105	1120	1165	1105		42,0	47,7	62,5	42,0
40,0	1350	1370	1430	1350		51,5	58,5	76,5	51,5
50,0	1660	1685	1755	1660		62,5	71,3	93,0	62,5

Notes:

1. Weight of cylinders is specified without valves, caps, rings and shoes and is a reference value and nominal in the manufacture of cylinders with finite mass.

2. Lengths of cylinders are specified as reference and are accepted nominal in the manufacture of cylinders with finite length.

3. The estimated mass of cap metal — 1,8 kg; FRP — 0.5 kg; ring — 0,3 kg, the Shoe is 5.2 kg.

1.1; 1.2. (Changed edition, Rev. N 4, 5).

1.3. Cylinders must be manufactured of conventional and high precision.

1.4. Cylinders usual accuracy produce with limited volume; cylinders of high accuracy for the volume and external diameter or the length and outer diameter.

Limit deviations shall be as specified in table.2.

Table 2

Limit deviation	For cylinders ordinary precision	For cylinders of high accuracy
By volume:
for cylinders of small volume	+10%	+5%
for cylinders of average volume	+5%	+5%
Length:
for cylinders of small volume	-	±6 mm
for cylinders of average volume	-	±15 mm
Outer diameter:
for cylinders made of carbon steel	-	±1,0%
for cylinders of alloy steel	-	±1,5%
In places of transition from cylinder to sphere:
for cylinders made of carbon steel	±2,0%	±1,5%
for cylinders of alloy steel	±2,5%	±2,0%

Note the Curvature of the cylinders of the average volume — not more than 0.5% of the length of the cylindrical part of the cylinder.


(Changed edition, Rev. N 5).

1.5. According to customer cylinders from alloy steels can be produced with the restrictions on weight. The mass of the cylinders should not exceed more than 10% of the mass specified in table.1.

Examples of symbols:

a cylinder capacity of 4 liters at a pressure of 14.7 MPa (150 kgf/cm), carbon steel, regular accuracy of manufacturing, for air:

Bottle for air 4−150У GOST 949−73

the same, of alloy steel, high precision manufacturing, with the volume limitation, without limitation, by mass, nitrogen:

Gas cylinder for nitrogen 4P-150L GOST 949−73

the same, regular accuracy of manufacturing, limited mass, for air:

Bottle for air 4−150L-M GOST 949−73

the same, high precision manufacturing in volume, with limited weight, medical oxygen:

Cylinder for medical oxygen 4P-150L-M GOST 949−73

the same manufacturing high precision, the length of the liner 400 mm, limited by mass, nitrogen:

Gas cylinder for nitrogen, the 4−150HP-400-M GOST 949−73

the same, short, with a volume of 2 l at a pressure of 14.7 MPa (150 kgf/cm), made of carbon steel, high precision manufacturing limited in length, without restrictions on the weight, for air:

Cylinder for air K2−150У-330 GOST 949−73

(Changed edition, Rev. N 4).

1.6. At the request of consumers can be manufactured of cylinders that differ in size and length specified in table.1. Limit deviation should conform to table.2.

(Added, Rev. N 5).

2. TECHNICAL REQUIREMENTS

2.1. Cylinders must be manufactured in accordance with the requirements of this standard and the Rules of arrangement and safe operation vessels working under pressure, working drawings, approved in the prescribed manner.

Cylinders shall be made of tubes (or balloon preform), past ultrasonic testing of metal.

Permitted instead of the ultrasonic inspection of tubes conducting ultrasonic testing of the cylindrical part of cylinders.

(Changed edition, Rev. N 5).

2.1. (Deleted, Rev. N 5).

2.2. Cylinders must be heat treated in accordance with the Rules of arrangement and safe operation vessels working under pressure.

Mechanical properties of the material of the cylinders shall be as specified in table.3.

Table 3*

________________
* Tables 4 and 5. (Deleted, Rev. N 5).

The name of the property	Carbon steel	Alloy steel
Tensile strength , N/mm(kgf/mm), not less	638 (65)	883 (90)
Yield strength , N/mm(kgf/mm), not less	373 (38)	687 (70)
Elongation , %, not less	15	10
Toughness, KSI j/cm(kgf·m/cm), not less, at 20°C	29,4 (3)	98,1 (10)

(Changed edition, Rev. N 5).

2.3. Materials of housings of the valves of the cylinders depending on the fill gas and the direction of the thread side of the fitting is specified in the application. Side fittings valves for toxic and flammable gases shall be fitted with plugs.

(Changed edition, Rev. N 4).

2.4. The outer and inner surfaces of the cylinders shall be without captivity, sinks, laps, cracks.

Deepen, risks, traces of scale or tool, summarized and disclosed the wrinkles on the inside of the necks and bottoms and other minor defects shall not display wall thickness over the minimum value specified in table.1.

(Changed edition, Rev. N 1).

2.5. The carving of a mouth of cylinders should be manufactured in accordance with GOST 9909.

the outer diameter of the thread in the main plane must be:

for cylinders of small volume is 19.2 mm,

for cylinders of average volume — 27.8 mm,

cylinders for acetylene — 30.3 mm;

the number of threads with a full profile should be not less than 8, and for cylinders of small volume — not less than 7 in a row from the end of the neck;

on the valve, screwed into the neck of the container must be 2−5 spare threads;

installation of valves shall be made with sealant application.

(Changed edition, Rev. N 5).

2.6. At the request of consumers, cylinders may be manufactured with consistent dimensions of the outer diameter of the neck.

2.7. On the neck of the cylinders with the safety caps must be securely fastened a steel ring.

2.8. Rings and protective caps should be interchangeable.

2.9. The threaded rings and caps no more than one-third of the total number of threads allowed by the local minor tears and visibley length of not more than one third of the circumference.

Thread rings and protective caps shall meet the requirements of GOST 6357.

(Changed edition, Rev. N 5).

2.10. Shoes, made of cut steel pipe shall be tightly fitted on the cylinders with a gap between the support plane of the Shoe and the bottom of the container at least 10 mm.

2.11. (Deleted, Rev. N 5).

2.12. Before screwing in the valves or installation in the neck of the tubes internal surface of the cylinders must be cleaned from shavings and the lagging scale. Allowed thin durable oxide layer, obtained by normalization, as well as a separate spots due to a method of cleaning cylinders.

Cylinders of small volume, is designed for medical oxygen, as well as for the consumers should be completely cleaned from scale.

(Changed edition, Rev. N 5).

2.13. Cylinders for oxygen or hydrogen must be degreased and without valves should bezierease the customer. The cylinders are not allowed the presence of water and dirt.

(Changed edition, Rev. N 2).

2.14. The cylinders shall be painted outside with oil, enamel or nitro. Stigma after colouring should be clearly visible. On request, cylinders can not be painted.

2.15. Cylinders shall be equipped with the following items:

a) cylinders of small volume valves, according to customer requirements — without valves;

b) acetylene cylinders — rings, caps; medium volume — rings, caps and shoes;

in) cylinders of medium volume for ammonia, chlorine, phosphene, pseudorutile, sulphur — valves, rings, and caps;

g) cylinders of medium volume with the exception of the cylinders referred to in subparagraphs b and in, — valves, rings, caps and shoes.

Allowed by the customer’s order picking cylinders individual parts.

(Changed edition, Rev. N 5).

3. ACCEPTANCE RULES

3.1. Each cylinder must be subjected to acceptance tests.

3.2. The cylinders are taken by parties of up to 400 pieces one volume, size, and the same treatment.

3.3. Acceptance tests include:

— testing the strength of hydraulic pressure;

— leak test the pneumatic pressure;

— tensile test;

— impact test bending;

control of geometrical parameters of the thread;

— external examination;

— determination of the mass;

— definition of scope.

(Changed edition, Rev. N 5).

3.4. The tensile test shall be carried out on the longitudinal short samples. The samples in their design part should not improve.

3.5. Test for impact strength shall be carried out on longitudinal samples of a type 3 according to GOST 9454. The axis of the incision should be perpendicular to the wide faces of the specimen. The test shall be performed on cylinders with a wall thickness of not less than 5 mm.

3.6. For tensile tests and impact bending samples cut from blocks of finished cylinders or pipes-witnesses, cut off from the pipes, which made this batch, and heat-treated together with the cylinders of the batch, and alloy steel, is one of melting.

You are allowed up to 15% of the cylinders in a batch of alloy steel to match the cylinders of alloy steel other heats, the party which passed the acceptance tests.

For each test, take at least two samples from the party.

3.5, 3.6. (Changed edition, Rev. N 5).

3.7. In case of discrepancy of test results the requirements of this standard tests are made at twice the number of samples. The results of selective inspections apply to the entire party.

(Changed edition, Rev. N 3).

3.8. Acetylene cylinders must test for leaks at the plants, filling the cylinders with a porous mass.

(Added, Rev. N 3).

4. TEST METHODS

4.1. Testing of pneumatic and hydraulic pressure is carried out in accordance with the Rules of arrangement and safe operation vessels working under pressure.

The test duration is not less than 1 min.

Pneumatic testing of cylinders intended to be filled by gases penetrating power higher than that of air, should be carried out according to normative-technical documentation.

(Changed edition, Rev. N 4).

4.2, 4.3. (Deleted, Rev. N 4).

4.4. Cylinders, chlorine valve complete, test pneumatic pressure of 2.94 MPa (30 kgf/cm).

(Changed edition, Rev. N 4).

4.5. The tensile test according to GOST 10006. Test speed to yield stress and during its passage not more than 10 mm/min, yield point is not more than 40 mm/min.

Allowed the verification of the mechanical properties of cylinders made of carbon steel to carry out non destructive testing by the method approved in the prescribed manner.

(Changed edition, Rev. N 5).

4.6. Test for impact strength — according to GOST 9454 longitudinal samples of type 3.

4.7. In case of discrepancy of test results the requirements of this standard tests are made at twice the number of samples.

When unsatisfactory results of repeated tests, the entire batch shall be sent on the secondary heat treatment.

Allowed not more than two reheat treatments. Additional leave is not considered as reheat treatment.

4.6, 4.7. (Changed edition, Rev. N 4).

4.8. Volume of cylinders up to 12 l control limit patterns in length. The volume of two cylinders from the party check by filling with water and determining the volume or mass of water.

The definition of the capacity of the cylinders of the average volume carried out by filling each tank with water and determining the volume or mass of water.

(Changed edition, Rev. N 5).

4.9. Control of the neck threads of the cylinder must be threaded gauges according to GOST 24998. The chamfer parameters of the neck are technological and control is not exposed.

(Added, Rev. N 5).

5. MARKING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. The marking of cylinders is carried out in accordance with the requirements of the Rules of arrangement and safe operation vessels working under pressure.

Additionally, data is applied according to the type of heat treatment:

N — normalization;

V — quenching with tempering.

5.2. The inscriptions on the cylinders and their color is made in accordance with the Rules of arrangement and safe operation vessels working under pressure.

5.1, 5.2. (Changed edition, Rev. N 5).

5.3. Cylinders transported without valves, must be protected from contamination with plastic or nylon plugs.

5.4. Cylinders of small volume transporterowych in containers, manufactured according to GOST 18477, without packaging. When carload shipment in box cars cylinders of small volume transporterowych Packed in boxes of GOST 2991 (type III-I) weight not more than 200 kg or stacked in piles up to the full capacity of the car. The dimensions of the boxes according to normative-technical documentation in accordance with the requirements of GOST 21140.

Cylinders of medium volume transporterowych without packaging in covered wagons, open wagons or containers manufactured according to GOST 18477.

It is allowed to transport cylinders in a multi-media package, cars or packages in them.

The scheme of placing and fastening of cylinders on vehicles must comply with the requirements of the Technical conditions of loading and fastening of goods* approved by MPs.
________________
* Probably, the error of the original. Should read: «Technical conditions of loading and fastening cargoes». — Note the manufacturer’s database.

(Changed edition, Rev. N 4).

5.4. On one side of each box must be marked with the transport marking, which includes basic, additional and informational inscriptions according to GOST 14192.

(Added, Rev. N 4).

5.5. Cylinders transporterowych by all kinds of transport in accordance with shipping rules applicable on each type of transport.

(Changed edition, Rev. N 5).

5.6. Each batch must be accompanied by a quality document certifying the compliance of the cylinders with the requirements of this standard, which must be specified:

the name of the manufacturer and location (city or conditional address);

product designation;

the number of cylinders and their numbers;

the results of hydraulic and pneumatic tests;

the designation of this standard.

(Changed edition, Rev. N 4).

5.7. Storage of cylinders in the group G2 to GOST 15150.

5.8. (Deleted, Rev. N 5).

6. MANUFACTURER’S WARRANTY

6.1. The manufacturer must ensure compliance of cylinders with the requirements of this standard if the consumer operating conditions, transportation and storage specified in this standard.

6.2. Warranty period — 2 years from the date of putting the cylinders in operation. The term of commissioning — in accordance with GOST 22352.

(Changed edition, Rev. N 5).

Sec. 7. (Deleted, Rev. N 4).

APP. Body materials the valves of the cylinders and the direction of the thread side of the fitting

APP

The name of the gas	The valve body material	The direction of the thread side of the fitting
Nitrogen	Brass	Right
Ammonia	Steel	Right
Argon	Brass	Right
Bhutan	Brass and steel	Left
Butylene	Brass	Left
Hydrogen	Brass	Left
The air	Brass	Right
Helium	Brass	Right
Oxygen	Brass	Right
Xenon	Brass	Right
Methane	Brass	Left
Propane and other combustible gases	Steel or brass	Left
Sulfur dioxide	Steel	Right
Carbon dioxide	Brass	Right
Phosgene	Steel	Right
Freon	Steel or brass	Right
Chlorine	Steel	Right
Chloromethyl	Brass	Left
Chloroethyl	Brass	Left
Ethylene	Brass	Left

Note. When ordering cylinders for gases not listed in the table, the customer must specify in the purchase order the type of valve.