| Stage of Inspection | Component / Operation | Specification | Attributes to be checked |
Extent of check | Acceptance Norms | Method of Checking |
| Raw Material | – | |||||
| Seamless Tube | ST-52, ASTM- 106 B | Dimensional, Chem & Phy. Properties |
100% | DIN2391, IS:2062 | Measurement, Lab Test | |
| Round | Alloy Steel | Dimensional, Chem & Phy. Properties |
1 / Lot | IS:1875, IS:2004, IS:1570, IS:8500 |
Measurement, Lab Test | |
| Incoming | Plate | C-45 | Dimensional | 1 / Lot | IS:2062 | Measurement |
| Hex, Flat, Square |
Mild Steel | Dimensional | 1 / Lot | IS:2062 | Measurement | |
| Castings – Non Ferrous |
CI, Al, PhBr, AlBr | Dimensional, Chem & Phy. Properties |
Sample Piece | IS:7811, IS:28, IS:617 | Measurement, Lab Test | |
| Honing | Ra<0.3 | Dimensional / Surface Finish / Ovality |
100% | Approved/Mfg. Drg | Measurement | |
| Machining | Dimensions | Dimensional | 100% | Approved/Mfg. Drg | Measurement, Guages | |
| Hardness | 45-50 HRC | HRC / BHN Value | 100% | Approved/Mfg. Drg | Hardness Tester | |
| In Process | Chrome Plating | 25-35 microns or as required by customer |
Surface Finish / Coating Thickness |
100% | Approved/Mfg. Drg | Coating Thickness Guage |
| Other Components | As per Drg | Dimensions | 100% | Approved/Mfg. Drg | Measurement, Guages | |
| Completeness | 100% | Visual | ||||
| – | Operation / Movement |
100% | Visual | Hydraulic Test Bench (Test Procedure as per IS:10585) |
||
| Stroke Length | 100% | Approved Drg | Measurement | |||
| Final Inspection | Hydraulic Test | Load Test | 100% | 1.5 times of Rated Pressure |
Hydraulic Test Bench (Test Procedure as per IS:10585) |
|
| Drag Test | 100% | Hydraulic Test Bench (Test Procedure as per IS:10585) |
||||
| Cushioning Test | 100% | Hydraulic Test Bench (Test Procedure as per IS:10585) |
||||
| Endurance Test | — | Endurance Test facility to be implemented shortly. |
