JB/T 4328.2-1999 General technical requirements for carbon steel castings for electrical equipment
Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T4328.2-1999
Electrical Equipment
General Technical Conditions for Casting Carbon Steel Parts
1999-08-06 Issued
State Machinery Industry Bureau
2000-01-01 Implementation
JB/T4328.2-1999
This standard is a revision of JB4328.2-86 "General Technical Conditions for Casting Carbon Steel Parts for Electrical Equipment". This standard replaces JB4328.2-86 from the date of implementation. This standard was proposed and managed by Shenyang Electrical Equipment Research Institute. This standard was drafted by Shenyang Electrical Equipment Research Institute and Shenyang Electrical Machinery Co., Ltd. The main drafters of this standard are Song Junfa and Chen Jiashan. This standard was first issued on December 1, 1986, and this standard was revised for the first time. This standard is entrusted to Shenyang Electric Equipment Research Institute for interpretation. 1 Scope
Machinery Industry Standard of the People's Republic of China
Electrical Equipment
General Technical Conditions for Cast Carbon Steel Parts
JB/T4328.2-1999
Replaces JB4328.2-1986
This standard specifies the requirements, heat treatment, test methods, inspection rules, marking and certificates for cast carbon steel parts for electrical equipment. This standard applies to cast carbon steel parts for electrical equipment (hereinafter referred to as "cast steel parts"). 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of the standard, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T222—1984
GB/T223—1981
GB/T228—1987
GB/T229-1994
GB/T113521989
JB/T4328.1—1999
3 Requirements
Sampling method for specimens for chemical analysis of steel and allowable deviation of chemical composition of finished products Chemical analysis methods for steel, iron and alloys
Metal tensile testing method
Metal Charpy notched impact testing method (eqvISO148:1983) Carbon steel castings for general engineering use (eqvISO3755:1975) General technical conditions for grey iron castings for special electrical equipment The grade, chemical composition and mechanical properties of steel castings shall conform to the requirements of Table 1 and Table 2. Table 1 Chemical composition
Maximum content of Yuan Zi
ZG200—400
ZG230—450
ZG270500
ZG310—570
ZG340—640
1 Reduce the carbon by 0.01% for the upper limit. It is allowed to increase manganese by 0.04%. The manganese of ZG200400 is up to 1.00%. The manganese of the other four grades is up to 1.20%.
2 The total amount of residual elements does not exceed 1.00%. If the buyer has no requirements, the residual elements can be analyzed. 3 When using an acid furnace to produce castings, the S and P contents shall be agreed upon by the supply and demand parties. Approved by State Bureau of Machinery Industry on August 6, 1999, implemented on January 1, 2000
ZG200—400
ZG230—450
ZG270—500
ZG310—570
ZG340—640
Yield strength
g or q2
Tensile strength
JB/T4328.2-1999
Minimum value
Elongation
1 In the table, A, V-impact absorption energy (V type); &—impact toughness (U type), shrinkage
Choose according to the contract
Impact toughness
2 The properties of each grade listed in the table are suitable for castings with a thickness of less than 100mm. When the thickness of the casting exceeds 100mm, the αaz yield strength specified in the table is for design use only.
3.2 The test block for mechanical properties shall be cast separately from the cast steel casting or attached to the main body. If the party who needs it does not specify the requirements, the casting method of the test block shall be determined by the manufacturer. The shape and size of the single-cast test block and the cutting position of the test sample shall comply with the provisions of GB/T11352. 3.3 In the chemical composition of the steel casting, the content of phosphorus and sulfur shall be less than 0.04% respectively, and other chemical compositions shall comply with the provisions of GB/11352.
3.4 The dimensional tolerance of steel castings shall comply with the provisions of Table A1 in Appendix A of JB/T4328.1-1999. 3.4.1 The dimensional tolerance of steel castings with a size greater than 25mm shall use CT13~CT15 grades for green sand molds and CT12~CT14 grades for self-hardening sand molds. 3.4.2
When the basic size of steel castings is less than 10mm, the dimensional tolerance of green sand molds shall be CT10~CT12. Self-hardening sand molds shall be CT9-CT11. When the basic size of steel castings is greater than 10 and not greater than 16mm, the dimensional tolerance of green sand molds shall be CT11~CT13, and self-hardening sand molds shall be CT10~CT12.
3.4.4When the basic size of steel castings is greater than 16mm and not greater than 25mm, the dimensional tolerance of green sand molds shall be CT12~CT14, and self-hardening sand molds shall be CT11~CT13.
3.4.5The wall thickness dimensional tolerance of steel castings is allowed to be one level lower than the dimensional tolerance of basic size castings. 3.5The surface quality of steel castings shall comply with the provisions of Table 3. 2
Molding sand, core sand, core bone, iron oxide scale
Pulling, cutting reinforcement
Pouring, riser neck
JB/T4328.2-1999
Not allowed to exist
External surface: Not allowed to exist
Residual range
Inner surface: Those that may fall off during use must be removed at the gas and liquid flow channels on the inner surface of the gearbox. External surface: Cleaned to within the dimensional tolerance range. Inner surface: Allowed to be retained without affecting the performance. Removed to meet the requirements of the drawing
Not allowed to exist
Shoveling, grinding, not exceeding the provisions of the casting dimensional tolerance. The misalignment value of steel castings shall comply with the provisions of Table 4. Table 4
Tolerance grade CT
Misalignment value (max)
3.7 Without affecting the service life and mechanical properties of steel castings, the defects allowed on the non-machined surface of steel castings shall comply with the provisions of Table 5.
Steel castings
Scars, etc.
Cold shut, wrinkles
A (important steel castings and important parts of steel castings) Defect size
Defect depth
≤17
In wall thickness
Protrusion≤
Remaining holes
Deep≤17
Wall original
Number of defects
Not many within Φ50mm
circle In
Not more than
In the Φ50mm
circleNot more than
In the Φ100mm
circleDefect spacing
B (Secondary steel castings and secondary parts of steel castings)Defect size
Defect depth
≤1/3 of the wall thickness
Remaining holes
Deep ≤17
Wall thickness
After trimming. Wall thickness should be within the size deviation range. On the same steel casting, there are two different important parts, and the defects should be assessed by total addition. 2 On the same steel casting, different types of defects appear, and they are calculated separately. Number of defects
Not more than
In a Φ50mm
circleNot more than
In a Φ50mm
circleNot more than
In a Φ50mm
circleNot more than
In a Φ100mm
circleNot more than
In a Φ100mm
circleDefect spacing
JB/T 4328.2 -1999
3.8: Without affecting the service life and performance of the sodium casting, the defects on the surface after processing shall comply with the provisions of Table 6. Any defects that can be removed during processing are generally allowed to exist. Table 6
Defect situation
Type of steel casting
Defect size
≤tooth groove bottom width
Blowholes, shrinkage holes,
, sand holes, slag holes
Defect depth
≤1/7
≤1/5tooth thickness
≤1/10gear ring thickness
Number of defects
Not allowed to exist
No more than 3 within a Φ50mm circle
No more than 2 within a Φ50mm circle
No more than 1 on the same tooth surface
No more than 1 on the same tooth groove
Defect gap ≥ 20mm. The number of teeth with defects is less than 1/13 of the total number of teeth and is not allowed to appear on three connected tooth surfaces or two tooth grooves. Application examples: hydraulic (pneumatic) parts, chain teeth, sealing surfaces, friction surfaces, important screw holes, etc. General matching surfaces and joint surfaces Non-matching machined surfaces, such as wheel rims, wheel hub ends, box bottoms, etc. Defects are not allowed to appear simultaneously on the symmetrical positions on both sides of the same section of the same wall on important machined surfaces and non-machined surfaces. 3.10 The following provisions are made for the repair of defects in steel castings. 3.10.1· If the defects on the non-machined surface or the surface after machining of steel castings do not meet the requirements of 3.7 and 3.8, but do not exceed the requirements of Table 7, and the repair does not affect the service life and performance of the castings, repair is allowed. Steel castings with defects that are not allowed to exist in the regulations shall not be repaired.
3.10.2 After machining, parts that still need to be tempered, quenched, etc., are not allowed to be repaired if defects occur. 3.10.3
Before welding repair, the defects must be scraped until good metal is present, and the area within 30mm from the edge of the groove must be cleaned. 3.10.4After welding important parts and parts, the weld repair area should be annealed or tempered. 3.10.5
After welding repair, the repair processing of the weld repair area meets the surface quality requirements of steel castings. For steel castings with airtightness requirements, leakage tests should be carried out after welding. For steel castings with hardness requirements, the hardness difference between the hardness after welding and the hardness of the parent body 3.10.6
should be within the Brinell hardness value ±20. 4 Heat treatment
Steel castings must be annealed, normalized, or normalized and tempered before leaving the factory. 4.1
4.2 Heat treatment of steel castings must be carried out after they are cooled to below the phase change temperature. 5 Test methods
5.1 Chemical analysis
5.1.1 The sampling method for chemical analysis samples shall be carried out in accordance with the provisions of GB/T222. 5.1.2 Chemical analysis shall be carried out in accordance with the provisions of GB/T223. 5.2 Mechanical property test
5.2.1 Test block
Perform in accordance with the provisions of Article 3.2.
5.2.2 Tensile test
Perform according to the provisions of GB/T228.
5.2.3 Impact test
Perform according to the provisions of GB/T229.
JB/T4328.2-1999
Defects
Blowholes, shrinkage holes, sand holes, slag holes
Types of steel castings
Non-box parts
Box parts
6 Inspection rules
Percentage of total defect area in the total area
Hole length in the circumferential direction
≤1/5 of the hub circumference,
Width in the radial direction≤1/3
Wheel hub wall thickness
Defect depth|| tt||≤1/3 location
≤1/15 wheel
≤1/2
Number of defects
on the whole piece
Ratio of crack length to the length along the crack length direction of the location
≤1/3
≤1/4
Crack depth
≤1/2 location
Not allowed to exist, no repair
Number of cracks
on the whole piece
When there are 3~5 spokes. There shall be no more than 1 crack. When there are more than 6 spokes, there shall be no more than 2 cracks, and the spokes with cracks shall not be adjacent to each other. No repair
Steel castings shall be inspected by the supplier's quality inspection department according to the drawings, relevant technical documents and this standard. After passing the test, the non-machined surface shall be coated with primer in accordance with 6.1 before it can be put into storage. The buyer has the right to re-test. 6.2 The chemical composition of steel shall be tested according to the smelting furnace, furnace by furnace. 6.3 The test blocks for mechanical properties shall be heat treated together with the steel castings they represent. 6.4 When a batch of steel castings of the same grade but different smelting times are heat treated in the same furnace, they shall be tested according to the smelting furnace. 6.5 A batch of steel castings of the same smelting furnace shall be treated in different furnaces under a fixed heat treatment process and stable heat treatment quality conditions, and random inspection is allowed.
6.6·For mechanical property inspection, take one tensile test specimen and three impact test specimens from each batch. 6.6.1 The average value of the tensile test results and impact test results shall comply with the provisions of Table 2, and any of the three measured values shall not be less than 2/3 of the specified value.
6.6.2 When the tensile test or impact test results are lower than the requirements of 6.6.1, the test item shall be retested. 6.6.3 Without the consent of the purchaser, the number of reheat treatments shall not exceed two times. 6.6.4 When the spare samples are insufficient, it is allowed to take samples from the castings. The sampling location is determined by the supplier, and its performance indicators are agreed upon by the supply and demand parties. 5
JB/T4328.2-1999
The surface quality, size and geometric shape of steel castings shall be checked piece by piece. The number of random inspections of steel castings produced in batches and with stable processes shall be 20% of the batch, but not less than 3 pieces. If unqualified steel castings are found in the random inspection, the batch of steel castings shall be inspected piece by piece. >
Mark and Certificate
The qualified steel castings shall be attached with the mark of the supplier's quality inspection department. 7.2
Steel castings shall be accompanied by a certificate of conformity upon leaving the factory, which shall indicate: a) manufacturer's name;
b) part name, drawing code and quantity; c) brand, melting furnace number and heat;
d) mechanical properties, chemical composition and test results; e) manufacturing date (or number) or production batch number. People's Republic of China
Mechanical Industry Standard
Special Electric Equipment
General Technical Conditions for Cast Carbon Steel Parts
JB/T 4328.2 - 1999
Published by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Format 880×1230
Edition X, XX, 19XX
Printing 1-xXX
Postal Code 100044)
Print Sheet X/X
Number of Words XXX,XXX
Printing X, XX, 19XX
Price XXX.XX Yuan
XX-XXX
Mechanical Industry Standard Service Network: http://www.JB.ac.cn661 - 83
Before welding repair, the defects must be scraped until good metal appears, and the area within 30mm from the edge of the groove must be cleaned. 3.10.4After welding important parts and parts, the welded area should be annealed or tempered. 3.10.5
After welding repair, the repair and processing of the welded area shall meet the surface quality requirements of the steel casting. For steel castings with airtightness requirements, leakage tests should be carried out after welding repair. For steel castings with hardness requirements, the hardness difference between the welded hardness and the hardness of the parent body 3.10.6
after welding repair should be within the Brinell hardness value ±20. 4Heat treatment
Steel castings must be annealed, normalized, or normalized and tempered before leaving the factory. 4.1
4.2The heat treatment of steel castings must be carried out after they are cooled below the phase change temperature. 5 Test methods
5.1 Chemical analysis
5.1.1 The sampling method for chemical analysis shall be carried out in accordance with the provisions of GB/T222. 5.1.2 Chemical analysis shall be carried out in accordance with the provisions of GB/T223. 5.2 Mechanical property test
5.2.1 Test block
shall be carried out in accordance with the provisions of Article 3.2.
5.2.2 Tensile test
shall be carried out in accordance with the provisions of GB/T228.
5.2.3 Impact test
shall be carried out in accordance with the provisions of GB/T229.
JB/T4328.2-1999
Defects
Blowholes, shrinkage holes, sand holes, slag holes
Types of steel castings
Non-box parts
Box parts
6 Inspection rules
Percentage of total defect area in the total area
Circumferential length of hole
≤1/5 circumference of hub,
Radial width≤1/3
Wheel hub wall thickness
Defect depth|| tt||≤1/3 location
≤1/15 wheel
≤1/2
Number of defects
on the whole piece
Ratio of crack length to the length along the crack length direction of the location
≤1/3
≤1/4
Crack depth
≤1/2 location
Not allowed to exist, no repair
Number of cracks
on the whole piece
When there are 3~5 spokes. There shall be no more than 1 crack. When there are more than 6 spokes, there shall be no more than 2 cracks, and the spokes with cracks shall not be adjacent to each other. No repair
Steel castings shall be inspected by the supplier's quality inspection department according to the drawings, relevant technical documents and this standard. After passing the test, the non-machined surface shall be coated with primer in accordance with 6.1 before it can be put into storage. The buyer has the right to re-test. 6.2 The chemical composition of steel shall be tested according to the smelting furnace, furnace by furnace. 6.3 The test blocks for mechanical properties shall be heat treated together with the steel castings they represent. 6.4 When a batch of steel castings of the same grade but different smelting times are heat treated in the same furnace, they shall be tested according to the smelting furnace. 6.5 A batch of steel castings of the same smelting furnace shall be treated in different furnaces under a fixed heat treatment process and stable heat treatment quality conditions, and random inspection is allowed.
6.6·For mechanical property inspection, take one tensile test specimen and three impact test specimens from each batch. 6.6.1 The average value of the tensile test results and impact test results shall comply with the provisions of Table 2, and any of the three measured values shall not be less than 2/3 of the specified value.
6.6.2 When the tensile test or impact test results are lower than the requirements of 6.6.1, the test item shall be retested. 6.6.3 Without the consent of the purchaser, the number of reheat treatments shall not exceed two times. 6.6.4 When the spare samples are insufficient, it is allowed to take samples from the castings. The sampling location is determined by the supplier, and its performance indicators are agreed upon by the supply and demand parties. 5
JB/T4328.2-1999
The surface quality, size and geometric shape of steel castings shall be checked piece by piece. The number of random inspections of steel castings produced in batches and with stable processes shall be 20% of the batch, but not less than 3 pieces. If unqualified steel castings are found in the random inspection, the batch of steel castings shall be inspected piece by piece. >
Mark and Certificate
The qualified steel castings shall be attached with the mark of the supplier's quality inspection department. 7.2
Steel castings shall be accompanied by a certificate of conformity upon leaving the factory, which shall indicate: a) manufacturer's name;
b) part name, drawing code and quantity; c) brand, melting furnace number and heat;
d) mechanical properties, chemical composition and test results; e) manufacturing date (or number) or production batch number. People's Republic of China
Mechanical Industry Standard
Special Electric Equipment
General Technical Conditions for Cast Carbon Steel Parts
JB/T 4328.2 - 1999
Published by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Format 880×1230
Edition X, XX, 19XX
Printing 1-xXX
Postal Code 100044)
Sheet X/X
Number of Words XXX,XXX
Printing X, XX, 19XX
Price XXX.XX Yuan
XX-XXX
Mechanical Industry Standard Service Network: http://www.JB.ac.cn661 - 83
Before welding repair, the defects must be scraped until good metal appears, and the area within 30mm from the edge of the groove must be cleaned. 3.10.4After welding important parts and parts, the welded area should be annealed or tempered. 3.10.5
After welding repair, the repair and processing of the welded area shall meet the surface quality requirements of the steel casting. For steel castings with airtightness requirements, leakage tests should be carried out after welding repair. For steel castings with hardness requirements, the hardness difference between the welded hardness and the hardness of the parent body 3.10.6
after welding repair should be within the Brinell hardness value ±20. 4Heat treatment
Steel castings must be annealed, normalized, or normalized and tempered before leaving the factory. 4.1
4.2The heat treatment of steel castings must be carried out after they are cooled below the phase change temperature. 5 Test methods
5.1 Chemical analysis
5.1.1 The sampling method for chemical analysis shall be carried out in accordance with the provisions of GB/T222. 5.1.2 Chemical analysis shall be carried out in accordance with the provisions of GB/T223. 5.2 Mechanical property test
5.2.1 Test block
shall be carried out in accordance with the provisions of Article 3.2.
5.2.2 Tensile test
shall be carried out in accordance with the provisions of GB/T228.
5.2.3 Impact test
shall be carried out in accordance with the provisions of GB/T229.
JB/T4328.2-1999
Defects
Blowholes, shrinkage holes, sand holes, slag holes
Types of steel castings
Non-box parts
Box parts
6 Inspection rules
Percentage of total defect area in the total area
Circumferential length of hole
≤1/5 circumference of hub,
Radial width≤1/3
Wheel hub wall thickness
Defect depth|| tt||≤1/3 location
≤1/15 wheel
≤1/2
Number of defects
on the whole piece
Ratio of crack length to the length along the crack length direction of the location
≤1/3
≤1/4
Crack depth
≤1/2 location
Not allowed to exist, no repair
Number of cracks
on the whole piece
When there are 3~5 spokes. There shall be no more than 1 crack. When there are more than 6 spokes, there shall be no more than 2 cracks, and the spokes with cracks shall not be adjacent to each other. No repair
Steel castings shall be inspected by the supplier's quality inspection department according to the drawings, relevant technical documents and this standard. After passing the test, the non-machined surface shall be coated with primer in accordance with 6.1 before it can be put into storage. The buyer has the right to re-test. 6.2 The chemical composition of steel shall be tested according to the smelting furnace, furnace by furnace. 6.3 The test blocks for mechanical properties shall be heat treated together with the steel castings they represent. 6.4 When a batch of steel castings of the same grade but different smelting times are heat treated in the same furnace, they shall be tested according to the smelting furnace. 6.5 A batch of steel castings of the same smelting furnace shall be treated in different furnaces under a fixed heat treatment process and stable heat treatment quality conditions, and random inspection is allowed.
6.6·For mechanical property inspection, take one tensile test specimen and three impact test specimens from each batch. 6.6.1 The average value of the tensile test results and impact test results shall comply with the provisions of Table 2, and any of the three measured values shall not be less than 2/3 of the specified value.
6.6.2 When the tensile test or impact test results are lower than the requirements of 6.6.1, the test item shall be retested. 6.6.3 Without the consent of the purchaser, the number of reheat treatments shall not exceed two times. 6.6.4 When spare samples are insufficient, it is allowed to take samples from the castings. The sampling location is determined by the supplier, and its performance indicators are agreed upon by the supplier and the purchaser. 5
JB/T4328.2-1999
The surface quality, size and geometric shape of steel castings shall be checked piece by piece. The number of random inspections of steel castings produced in batches and with stable processes shall be 20% of the batch, but not less than 3 pieces. If unqualified steel castings are found in the random inspection, the batch of steel castings shall be inspected piece by piece. >
Mark and Certificate
The qualified steel castings shall be attached with the mark of the supplier's quality inspection department. 7.2
Steel castings shall be accompanied by a certificate of conformity upon leaving the factory, which shall indicate: a) manufacturer's name;
b) part name, drawing code and quantity; c) brand, melting furnace number and heat;
d) mechanical properties, chemical composition and test results; e) manufacturing date (or number) or production batch number. People's Republic of China
Mechanical Industry Standard
Special Electric Equipment
General Technical Conditions for Cast Carbon Steel Parts
JB/T 4328.2 - 1999
Published by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Format 880×1230
Edition X, XX, 19XX
Printing 1-xXX
Postal Code 100044)
Print Sheet X/X
Number of Words XXX,XXX
Printing X, XX, 19XX
Price XXX.XX Yuan
XX-XXX
Mechanical Industry Standard Service Network: http://www.JB.ac.cn661 - 81, the test item shall be retested. 6.6.3 Without the consent of the purchaser, the number of reheat treatments shall not exceed two times. 6.6.4 When spare samples are insufficient, it is allowed to take samples from the castings. The sampling location is determined by the supplier, and its performance indicators are agreed upon by the supply and demand parties. 5
JB/T4328.2-1999
The surface quality, size and geometric shape of steel castings shall be checked piece by piece. The number of spot checks for steel castings produced in batches and with stable processes shall be 20% of the batch, but not less than 3 pieces. If unqualified steel castings are found in the spot checks, the batch of steel castings shall be inspected piece by piece. >
Mark and Certificate
Steel castings that have passed the inspection shall be accompanied by the mark of the supplier's quality inspection department. 7.2
Steel castings shall be accompanied by a certificate of conformity upon leaving the factory, which shall indicate: a) name of the manufacturer;
b) name of the part, drawing code and quantity; c) brand, melting furnace number and heat;
d) mechanical properties, chemical composition and test results; e) manufacturing date (or number) or production batch number. People's Republic of China
Mechanical Industry Standard
Special Electric Equipment
General Technical Conditions for Cast Carbon Steel Parts
JB/T 4328.2 - 1999
Published by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Format 880×1230
Edition X, XX, 19XX
Printing 1-xXXwww.bzxz.net
Postal Code 100044)
Print Sheet X/X
Number of Words XXX,XXX
Printing X, XX, 19XX
Price XXX.XX Yuan
XX-XXX
Mechanical Industry Standard Service Network: http://www.JB.ac.cn661 - 81, the test item shall be retested. 6.6.3 Without the consent of the purchaser, the number of reheat treatments shall not exceed two times. 6.6.4 When spare samples are insufficient, it is allowed to take samples from the castings. The sampling location is determined by the supplier, and its performance indicators are agreed upon by the supply and demand parties. 5
JB/T4328.2-1999
The surface quality, size and geometric shape of steel castings shall be checked piece by piece. The number of spot checks for steel castings produced in batches and with stable processes shall be 20% of the batch, but not less than 3 pieces. If unqualified steel castings are found in the spot checks, the batch of steel castings shall be inspected piece by piece. >
Mark and Certificate
Steel castings that have passed the inspection shall be accompanied by the mark of the supplier's quality inspection department. 7.2
Steel castings shall be accompanied by a certificate of conformity upon leaving the factory, which shall indicate: a) manufacturer's name;
b) part name, drawing code and quantity; c) brand, melting furnace number and heat;
d) mechanical properties, chemical composition and test results; e) manufacturing date (or number) or production batch number. People's Republic of China
Mechanical Industry Standard
Special Electric Equipment
General Technical Conditions for Cast Carbon Steel Parts
JB/T 4328.2 - 1999
Published by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Format 880×1230
Edition X, XX, 19XX
Printing 1-xXX
Postal Code 100044)
Print Sheet X/X
Number of Words XXX,XXX
Printing X, XX, 19XX
Price XXX.XX Yuan
XX-XXX
Mechanical Industry Standard Service Network: http://www.JB.ac.cn661 - 8
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