Seamless Steel Gas Cylinder Batch Inspection Certificate WFP/R-05-01
Cylinder Name: Seamless Steel Gas Cylinder
Document number WFP-2023-M0116
Lot No： 25A0 Fillingcontent： ■Carbon Dioxide CO2 ■ No media
Batch No.： 25A0059 Bottom Construction： Concave Base ends
Cylinder type： ISO232 Drawing No.: ISO232-Mn-00
Manufacturing Date: 2025.01.07
The quantity is202, with serial No. from 25A0059001 to 25A0059202；Including test on 2 Cylinders,（Serial No.: 25A0059201、 25A0059202）
Note： This batch excludes the following number 25A0059201、25A0059202
1.Main Technical Data：
Nominal Volume: 47 L Nominal working pressure: 150 Bar
Nominal Diameter: 232 mm Hydrostatic Test Pressure: 250 Bar
Min Design Wall Thickness: 5.4 mm Leakage Test Pressure: 150 Bar
2.Chemical composition（%） (37Mn)
/ C Si Mn P S S+P Cr
Min. 0.34 0.10 1.40 / / / /
Max. 0.38 0.35 1.70 0.015 0.010 0.020 0.30
Measured value 0,38 0,10 1,64 0,009 0,003 0,012 0,08
3. Heat Treatment Method： quenching A ft er tempering Medium Heat treatment Quenchant
4.Mechanical Test：
Tensile Strength Yield Strength Elongation Impact Value (J/cm²)
Bend Test
Cylinder No. Standard Rma(MPa) Rea(MPa) A(%) (-50℃)
740≤Rma＜880 ≥630 ≥14 ≥28（Min.） ≥35（Avg.） 180°without cracking
25A0059201 Actual 846 749 15,6 96/89/95 95 Qualified
5.Base check : After acid etching , there is no visible shrinkage cavity, air bubble, incomplete fusion, cracks, inclusions or white dots, the shape and size
of the structure accord with the drawing.
6.Hydrostatic Burst Test Cylinder No.: 25A0059202
Standard Yield Pressure: ≥32.9 MPa Burst Pressure: ≥40.0 MPa
Actual Yield Pressure: 35,6 MPa Burst Pressure: 41,5 MPa
Fracture Shape: The fracture was in the form of plastic deformation, with no fragment, and the fracture shape shall conform to requirements of applicable standard
The products were verified by inspection and test that they complied with the standard (ISO9809-1：2019)
Conclusion From B&PV Safety
Supervision Authority
Supervisor manager inspection
07 January 2025
Seamless Steel Gas Cylinder Batch Inspection Certificate WFP/R-05-01
Cylinder Name: Seamless Steel Gas Cylinder
Document number WFP-2023-M0116
Lot No： 25A0 Fillingcontent： ■Carbon Dioxide CO2 ■ No media
Batch No.： 25A0060 Bottom Construction： Concave Base ends
Cylinder type： ISO232 Drawing No.: ISO232-Mn-00
Manufacturing Date: 2025.01.07
The quantity is202, with serial No. from 25A0060001 to 25A0060202；Including test on 2 Cylinders,（Serial No.: 25A0060201、 25A0060202）
Note： This batch excludes the following number 25A0060201、25A0060202
1.Main Technical Data：
Nominal Volume: 47 L Nominal working pressure: 150 Bar
Nominal Diameter: 232 mm Hydrostatic Test Pressure: 250 Bar
Min Design Wall Thickness: 5.4 mm Leakage Test Pressure: 150 Bar
2.Chemical composition（%） (37Mn)
/ C Si Mn P S S+P Cr
Min. 0.34 0.10 1.40 / / / /
Max. 0.38 0.35 1.70 0.015 0.010 0.020 0.30
Measured value 0,36 0,23 1,56 0,009 0,006 0,015 0,08
3. Heat Treatment Method： quenching A ft er tempering Medium Heat treatment Quenchant
4.Mechanical Test：
Tensile Strength Yield Strength Elongation Impact Value (J/cm²)
Bend Test
Cylinder No. Standard Rma(MPa) Rea(MPa) A(%) (-50℃)
740≤Rma＜880 ≥630 ≥14 ≥28（Min.） ≥35（Avg.） 180°without cracking
25A0060201 Actual 846 749 15,9 89/96/92 93 Qualified
5.Base check : After acid etching , there is no visible shrinkage cavity, air bubble, incomplete fusion, cracks, inclusions or white dots, the shape and size
of the structure accord with the drawing.
6.Hydrostatic Burst Test Cylinder No.: 25A0060202
Standard Yield Pressure: ≥32.9 MPa Burst Pressure: ≥40.0 MPa
Actual Yield Pressure: 34,3 MPa Burst Pressure: 41,1 MPa
Fracture Shape: The fracture was in the form of plastic deformation, with no fragment, and the fracture shape shall conform to requirements of applicable standard
The products were verified by inspection and test that they complied with the standard (ISO9809-1：2019)
Conclusion From B&PV Safety
Supervision Authority
Supervisor manager inspection
07 January 2025
Seamless Steel Gas Cylinder Batch Inspection Certificate WFP/R-05-01
Cylinder Name: Seamless Steel Gas Cylinder
Document number WFP-2023-M0116
Lot No： 25A0 Fillingcontent： ■Carbon Dioxide CO2 ■ No media
Batch No.： 25A0061 Bottom Construction： Concave Base ends
Cylinder type： ISO232 Drawing No.: ISO232-Mn-00
Manufacturing Date: 2025.01.07
The quantity is202, with serial No. from 25A0061001 to 25A0061202；Including test on 2 Cylinders,（Serial No.: 25A0061201、 25A0061202）
Note： This batch excludes the following number 25A0061201、25A0061202
1.Main Technical Data：
Nominal Volume: 47 L Nominal working pressure: 150 Bar
Nominal Diameter: 232 mm Hydrostatic Test Pressure: 250 Bar
Min Design Wall Thickness: 5.4 mm Leakage Test Pressure: 150 Bar
2.Chemical composition（%） (37Mn)
/ C Si Mn P S S+P Cr
Min. 0.34 0.10 1.40 / / / /
Max. 0.38 0.35 1.70 0.015 0.010 0.020 0.30
Measured value 0,36 0,10 1,62 0,008 0,001 0,009 0,09
3. Heat Treatment Method： quenching A ft er tempering Medium Heat treatment Quenchant
4.Mechanical Test：
Tensile Strength Yield Strength Elongation Impact Value (J/cm²)
Bend Test
Cylinder No. Standard Rma(MPa) Rea(MPa) A(%) (-50℃)
740≤Rma＜880 ≥630 ≥14 ≥28（Min.） ≥35（Avg.） 180°without cracking
25A0061201 Actual 848 748 16,1 89/91/90 93 Qualified
5.Base check : After acid etching , there is no visible shrinkage cavity, air bubble, incomplete fusion, cracks, inclusions or white dots, the shape and size
of the structure accord with the drawing.
6.Hydrostatic Burst Test Cylinder No.: 25A0061202
Standard Yield Pressure: ≥32.9 MPa Burst Pressure: ≥40.0 MPa
Actual Yield Pressure: 34,8 MPa Burst Pressure: 41,2 MPa
Fracture Shape: The fracture was in the form of plastic deformation, with no fragment, and the fracture shape shall conform to requirements of applicable standard
The products were verified by inspection and test that they complied with the standard (ISO9809-1：2019)
Conclusion From B&PV Safety
Supervision Authority
Supervisor manager inspection
07 January 2025
Seamless Steel Gas Cylinder Batch Inspection Certificate WFP/R-05-01
Cylinder Name: Seamless Steel Gas Cylinder
Document number WFP-2023-M0116
Lot No： 25A0 Fillingcontent： ■Carbon Dioxide CO2 ■ No media
Batch No.： 25A0062 Bottom Construction： Concave Base ends
Cylinder type： ISO232 Drawing No.: ISO232-Mn-00
Manufacturing Date: 2025.01.07
The quantity is202, with serial No. from 25A0062001 to 25A0062202；Including test on 2 Cylinders,（Serial No.: 25A0062201、 25A0062202）
Note： This batch excludes the following number 25A0062201、25A0062202
1.Main Technical Data：
Nominal Volume: 47 L Nominal working pressure: 150 Bar
Nominal Diameter: 232 mm Hydrostatic Test Pressure: 250 Bar
Min Design Wall Thickness: 5.4 mm Leakage Test Pressure: 150 Bar
2.Chemical composition（%） (37Mn)
/ C Si Mn P S S+P Cr
Min. 0.34 0.10 1.40 / / / /
Max. 0.38 0.35 1.70 0.015 0.010 0.020 0.30
Measured value 0,38 0,15 1,61 0,007 0,006 0,013 0,04
3. Heat Treatment Method： quenching A ft er tempering Medium Heat treatment Quenchant
4.Mechanical Test：
Tensile Strength Yield Strength Elongation Impact Value (J/cm²)
Bend Test
Cylinder No. Standard Rma(MPa) Rea(MPa) A(%) (-50℃)
740≤Rma＜880 ≥630 ≥14 ≥28（Min.） ≥35（Avg.） 180°without cracking
25A0062201 Actual 842 750 16,7 96/96/89 92 Qualified
5.Base check : After acid etching , there is no visible shrinkage cavity, air bubble, incomplete fusion, cracks, inclusions or white dots, the shape and size
of the structure accord with the drawing.
6.Hydrostatic Burst Test Cylinder No.: 25A0062202
Standard Yield Pressure: ≥32.9 MPa Burst Pressure: ≥40.0 MPa
Actual Yield Pressure: 35,4 MPa Burst Pressure: 40,5 MPa
Fracture Shape: The fracture was in the form of plastic deformation, with no fragment, and the fracture shape shall conform to requirements of applicable standard
The products were verified by inspection and test that they complied with the standard (ISO9809-1：2019)
Conclusion From B&PV Safety
Supervision Authority
Supervisor manager inspection
07 January 2025
Seamless Steel Gas Cylinder Batch Inspection Certificate WFP/R-05-01
Cylinder Name: Seamless Steel Gas Cylinder
Document number WFP-2023-M0116
Lot No： 25A0 Fillingcontent： ■Carbon Dioxide CO2 ■ No media
Batch No.： 25A0063 Bottom Construction： Concave Base ends
Cylinder type： ISO232 Drawing No.: ISO232-Mn-00
Manufacturing Date: 2025.01.07
The quantity is202, with serial No. from 25A0063001 to 25A0063202；Including test on 2 Cylinders,（Serial No.: 25A0063201、 25A0063202）
Note： This batch excludes the following number 25A0063201、25A0063202
1.Main Technical Data：
Nominal Volume: 47 L Nominal working pressure: 150 Bar
Nominal Diameter: 232 mm Hydrostatic Test Pressure: 250 Bar
Min Design Wall Thickness: 5.4 mm Leakage Test Pressure: 150 Bar
2.Chemical composition（%） (37Mn)
/ C Si Mn P S S+P Cr
Min. 0.34 0.10 1.40 / / / /
Max. 0.38 0.35 1.70 0.015 0.010 0.020 0.30
Measured value 0,37 0,33 1,58 0,007 0,003 0,010 0,04
3. Heat Treatment Method： quenching A ft er tempering Medium Heat treatment Quenchant
4.Mechanical Test：
Tensile Strength Yield Strength Elongation Impact Value (J/cm²)
Bend Test
Cylinder No. Standard Rma(MPa) Rea(MPa) A(%) (-50℃)
740≤Rma＜880 ≥630 ≥14 ≥28（Min.） ≥35（Avg.） 180°without cracking
25A0063201 Actual 840 745 15,2 93/93/95 91 Qualified
5.Base check : After acid etching , there is no visible shrinkage cavity, air bubble, incomplete fusion, cracks, inclusions or white dots, the shape and size
of the structure accord with the drawing.
6.Hydrostatic Burst Test Cylinder No.: 25A0063202
Standard Yield Pressure: ≥32.9 MPa Burst Pressure: ≥40.0 MPa
Actual Yield Pressure: 35,4 MPa Burst Pressure: 40,1 MPa
Fracture Shape: The fracture was in the form of plastic deformation, with no fragment, and the fracture shape shall conform to requirements of applicable standard
The products were verified by inspection and test that they complied with the standard (ISO9809-1：2019)
Conclusion From B&PV Safety
Supervision Authority
Supervisor manager inspection
07 January 2025
Seamless Steel Gas Cylinder Batch Inspection Certificate WFP/R-05-01
Cylinder Name: Seamless Steel Gas Cylinder
Document number WFP-2023-M0116
Lot No： 25A0 Fillingcontent： ■Carbon Dioxide CO2 ■ No media
Batch No.： 25A0064 Bottom Construction： Concave Base ends
Cylinder type： ISO232 Drawing No.: ISO232-Mn-00
Manufacturing Date: 2025.01.07
The quantity is202, with serial No. from 25A0064001 to 25A0064202；Including test on 2 Cylinders,（Serial No.: 25A0064201、 25A0064202）
Note： This batch excludes the following number 25A0064201、25A0064202
1.Main Technical Data：
Nominal Volume: 47 L Nominal working pressure: 150 Bar
Nominal Diameter: 232 mm Hydrostatic Test Pressure: 250 Bar
Min Design Wall Thickness: 5.4 mm Leakage Test Pressure: 150 Bar
2.Chemical composition（%） (37Mn)
/ C Si Mn P S S+P Cr
Min. 0.34 0.10 1.40 / / / /
Max. 0.38 0.35 1.70 0.015 0.010 0.020 0.30
Measured value 0,35 0,35 1,63 0,009 0,004 0,013 0,06
3. Heat Treatment Method： quenching A ft er tempering Medium Heat treatment Quenchant
4.Mechanical Test：
Tensile Strength Yield Strength Elongation Impact Value (J/cm²)
Bend Test
Cylinder No. Standard Rma(MPa) Rea(MPa) A(%) (-50℃)
740≤Rma＜880 ≥630 ≥14 ≥28（Min.） ≥35（Avg.） 180°without cracking
25A0064201 Actual 841 746 16,2 91/91/95 92 Qualified
5.Base check : After acid etching , there is no visible shrinkage cavity, air bubble, incomplete fusion, cracks, inclusions or white dots, the shape and size
of the structure accord with the drawing.
6.Hydrostatic Burst Test Cylinder No.: 25A0064202
Standard Yield Pressure: ≥32.9 MPa Burst Pressure: ≥40.0 MPa
Actual Yield Pressure: 35,6 MPa Burst Pressure: 41,8 MPa
Fracture Shape: The fracture was in the form of plastic deformation, with no fragment, and the fracture shape shall conform to requirements of applicable standard
The products were verified by inspection and test that they complied with the standard (ISO9809-1：2019)
Conclusion From B&PV Safety
Supervision Authority
Supervisor manager inspection
07 January 2025
Seamless Steel Gas Cylinder Batch Inspection Certificate WFP/R-05-01
Cylinder Name: Seamless Steel Gas Cylinder
Document number WFP-2023-M0116
Lot No： 25A0 Fillingcontent： ■Carbon Dioxide CO2 ■ No media
Batch No.： 25A0065 Bottom Construction： Concave Base ends
Cylinder type： ISO232 Drawing No.: ISO232-Mn-00
Manufacturing Date: 2025.01.07
The quantity is202, with serial No. from 25A0065001 to 25A0065202；Including test on 2 Cylinders,（Serial No.: 25A0065201、 25A0065202）
Note： This batch excludes the following number 25A0065201、25A0065202
1.Main Technical Data：
Nominal Volume: 47 L Nominal working pressure: 150 Bar
Nominal Diameter: 232 mm Hydrostatic Test Pressure: 250 Bar
Min Design Wall Thickness: 5.4 mm Leakage Test Pressure: 150 Bar
2.Chemical composition（%） (37Mn)
/ C Si Mn P S S+P Cr
Min. 0.34 0.10 1.40 / / / /
Max. 0.38 0.35 1.70 0.015 0.010 0.020 0.30
Measured value 0,35 0,15 1,49 0,009 0,008 0,017 0,03
3. Heat Treatment Method： quenching A ft er tempering Medium Heat treatment Quenchant
4.Mechanical Test：
Tensile Strength Yield Strength Elongation Impact Value (J/cm²)
Bend Test
Cylinder No. Standard Rma(MPa) Rea(MPa) A(%) (-50℃)
740≤Rma＜880 ≥630 ≥14 ≥28（Min.） ≥35（Avg.） 180°without cracking
25A0065201 Actual 847 749 16,8 93/91/94 93 Qualified
5.Base check : After acid etching , there is no visible shrinkage cavity, air bubble, incomplete fusion, cracks, inclusions or white dots, the shape and size
of the structure accord with the drawing.
6.Hydrostatic Burst Test Cylinder No.: 25A0065202
Standard Yield Pressure: ≥32.9 MPa Burst Pressure: ≥40.0 MPa
Actual Yield Pressure: 34,9 MPa Burst Pressure: 40,4 MPa
Fracture Shape: The fracture was in the form of plastic deformation, with no fragment, and the fracture shape shall conform to requirements of applicable standard
The products were verified by inspection and test that they complied with the standard (ISO9809-1：2019)
Conclusion From B&PV Safety
Supervision Authority
Supervisor manager inspection
07 January 2025
