1. Direct links to the topic pages
Each of these is a standalone query page — click a name to jump straight in. The two marked "New" were added this round.
| Page | What it covers | Use it for |
|---|---|---|
| Heat Treatment Processes New | Annealing, normalizing, quenching and tempering parameters and hardness for 26 materials; case-depth rules for carburizing and nitriding; surface hardening; hardness conversion; defects and inspection; drawing callouts; distortion after slitting | Process parameters and hardness |
| Manufacturing Process Selection New | Capability comparison and cost thresholds for 20 processes (machining, laser cutting, casting, forging, die casting, stamping, extrusion, welding, additive, wire EDM and more); process choice by function for 14 part families; drawing feature → process trap; process-chain templates | Which process to use for it |
| Materials | Chemical composition, tensile/yield/elongation, Chinese and international grade equivalents, temper and hardness for 26 materials; MTC comparison tool (PDF / screenshot OCR / text, judged row by row across heats) | What the material is and whether it meets spec |
| Surface Finish Reference | Process flow, coating thickness and inspection methods for 18 finishes; suitability of eddy-current thickness gauges; pre- and post-treatment; sealing after plating; layer-by-layer thickness of Cu-Ni-Cr systems | How to coat it how to verify it |
| Thread Types and Inspection | Parameter tables for six thread families — metric M, unified UN/UNF, British BSF, trapezoidal Tr, round Rd — with tolerance classes, plus a thread calculator and inspection methods | Thread dimensions and how to measure them |
| Tolerance Quick Reference | Standard tolerances, fundamental deviations, fit selection, general tolerances (GB/T 1800.1, 1804) | How to set the tolerance |
| GD&T Explained: Q&A | Geometric tolerance callouts, tolerance zone interpretation, inspection and verification, maximum material requirement (GB/T 1182, 1184, 1958, 16671) | How to specify geometry |
| Weld Symbol Reference | Weld symbol representation, process numbers, common callout mistakes (GB/T 324, 5185) | How to specify a weld |
| Gauge Management Handbook | Gauge selection and calibration, measurement uncertainty, MSA, gauge ledger and interval management | What to measure with and how to control it |
How to use this page: first find out here which standard a topic belongs to, then open the topic page for the actual figures. The standard numbers match on both sides, and every value on a topic page traces back to a GB number in this list.
2. Technical documents on file (click a title to open the original)
ISO
EN ISO 11199-1:2021 Walking aids operated by two arms — Requirements and test methods — Part 1: Walking frames
Published by CEN in June 2021, replacing the 1999 edition, 35 pages. Handled by ISO/TC 173 "Assistive products" and CEN/TC 293; specifies structural strength, stability requirements and test methods for two-arm walking frames (Gehrahmen), ICS 11.180.10.
MH
Machinery's Handbook Guide — 28th Edition
The companion study guide to Machinery's Handbook, the "bible of the mechanical trades" in American industry. Covers maths conversions, mechanics and material strength, threads and fasteners, tolerances and fits, machining, tooling and gauges — the English reference most often opened on a machining floor.
Added in November 2026 (QC training material — click a file name to open the original)
| File | Format | Contents |
|---|---|---|
| ASME Y14.5-2018 Dimensioning and Tolerancing | US GD&T standard for dimensioning and geometric tolerancing (Y14.5-2018) | |
| Stamping tolerance table DIN 6930 (Chinese edition) | Quick reference for stamped-part dimensional tolerances (DIN 6930) | |
| Alum Extrusion Standard Tolerance | Standard tolerances for aluminium extrusions | |
| GB 14486-2008 Dimensional tolerances for plastic moulded parts | DOC | National standard for plastic (injection/moulded) part tolerances |
| AAMA 2604 (Chinese) — US architectural powder coating requirements | Coating requirements for high-performance organic powder coatings on architectural aluminium | |
| ASTM B117-2016 (Chinese) | Standard practice for salt spray testing | |
| IQ.046_2 — ABER packaging requirements | Customer packaging requirement specification | |
| K7 colour card & formulas (electronic) | Powder/liquid colour card reference and formulas | |
| MSA training | PPTX | Measurement systems analysis (MSA) training material |
| An introduction to PEM standard fasteners | Selection and background of PEM press-fit and swaged fasteners | |
| S2017-403 NPTF dry-seal pipe thread gauge instructions | How to use NPTF dry-seal pipe thread gauges |
Welding documents (click a file name to open the original)
| File | Format | Contents |
|---|---|---|
| Weld symbols GB (national-standard symbol atlas) | Illustrated guide to GB weld symbol callouts | |
| JIS weld symbols | Reading and applying JIS weld symbols | |
| US weld symbols 20241010 | DOCX | AWS weld symbol reading — training material |
| SHP-005 GMAW (Chinese translation) | GMAW/MIG welding procedure and operating requirements | |
| CSA W59-13 (Chinese edition) | Canadian structural steel welding standard W59-13 (acceptance requirements) | |
| Weld inspection guide | DOCX | Visual and dimensional weld inspection methods and acceptance |
| Ultrasonic testing form 24.5.11 | XLS | Ultrasonic (UT) weld inspection record form |
| Ultrasonic welding template | XLSX | Ultrasonic welding parameter template |
| RR-000021 BT2299 | Customer technical requirements BT2299 | |
| SCAR-24-013 | Supplier corrective action report (SCAR) example |
Inspection and process documents (second batch, November 2026 — grouped, click a file name to open the original)
| Category | File | Format | Contents |
|---|---|---|---|
| Threads and fasteners | Thread comparison table 2023 | DOC | Quick comparison of thread specifications across standards (2023 edition) |
| Threads and fasteners | Thread tap drill diameters | DOCX | Choosing the tap drill diameter |
| Threads and fasteners | The most complete tap drill diameter table | Comprehensive tap drill diameter reference | |
| Threads and fasteners | Thread chamfer requirements | DOCX | Chamfer requirements at thread ends |
| Threads and fasteners | Fastener basics | DOCX | Bolt grades, markings and selection fundamentals |
| Threads and fasteners | Knurling basics | DOCX | Knurl types, modules and callouts |
| Threads and fasteners | National flange standard | DOCX | GB flange sizes and dimensions |
| Surface treatment and coating inspection | Powder coating inspection standard (516 update) | DOCX | Powder coating inspection standard (latest edition) |
| Surface treatment and coating inspection | Painted surface appearance inspection | DOCX | Judging appearance defects on painted parts |
| Surface treatment and coating inspection | Anodised appearance standard | DOCX | Appearance acceptance standard for anodised parts |
| Surface treatment and coating inspection | Kairong inspector — galvanizing site work | DOCX | On-site inspection requirements for galvanizing |
| Surface treatment and coating inspection | Automotive paint test requirements | DOCX | Automotive paint and coating test items and requirements |
| Inspection specifications | Machining inspection specification (for reference) | DOCX | Inspection items and methods for machined parts |
| Inspection specifications | Furniture hardware inspection guide | DOCX | Inspection standards and acceptance for furniture hardware |
| Inspection specifications | Linear guide rail inspection specification | DOCX | Inspection items and methods for linear guides |
| Inspection specifications | Rotational mould tooling acceptance — product inspection | DOCX | Rotomould tooling acceptance and rotomoulded product inspection |
| Tolerances and drawings | Company standard for unnoted tolerances by metal process | XLSX | Unnoted tolerances for turning, milling, drilling, sheet metal and similar processes (company standard) |
| Tolerances and drawings | Definition and interpretation of geometric tolerances | DOCX | GD&T characteristic definitions, interpretation and inspection |
| Plastic parts and packaging | Engineering — Kairong plastic part packaging specification | DOCX | Packaging requirements for plastic parts |
| Plastic parts and packaging | Bottle cap 415 drawing | Product drawing for the 415 bottle cap | |
| Plastic parts and packaging | Bottle thread 48 | Bottle neck 48 thread specification drawing |
Common form templates (QC department forms — click a file name to open the original)
| Category | File | Format | Contents |
|---|---|---|---|
| Inspection report templates | Rubber part final inspection report | XLSX | Template for rubber part final inspection reports |
| Inspection report templates | Salt spray test inspection report template | DOCX | Template for salt spray inspection reports |
| Inspection report templates | Finished goods report template with surface treatment | XLS | Final inspection report for parts with a surface treatment step |
| Inspection report templates | Zinc plating test report template (English) | XLS | English template for zinc coating test reports |
| Inspection report templates | Finished Certs for SHS26891 (English) | XLS | English finished-goods inspection certificate for SHS26891 |
| Quality certificates | EN 10204-3.1 template | XLSX | EN 10204 3.1 material certificate template |
| Quality certificates | Certificate of Conformity (COC) | DOCX | Certificate of Conformity template |
| Tooling acceptance | Die casting tool acceptance sheet template | XLSX | Die casting tool acceptance checklist |
| Tooling acceptance | Injection mould acceptance report template | XLSX | Injection mould acceptance report |
| Tooling acceptance | Stamping die acceptance report template | XLSX | Stamping die acceptance report |
| Sampling and goods inspection | AQL sampling plan (revision C) | DOCX | AQL sampling inspection plan and acceptance criteria |
| Sampling and goods inspection | E-commerce inspection plan and exception handling (revision B) | DOCX | Inspection plan and exception process for e-commerce channels |
| Sampling and goods inspection | Project line-follow report | XLSX | On-site / line-follow inspection report form |
| Supplier management | Supplier site audit form (factory audit) | XLSX | Supplier factory audit checklist |
| Supplier management | Potential supplier questionnaire V1.0 | XLSX | Background questionnaire for new suppliers |
| Work instructions and procedures | QC work instruction (revision C) | XLSX | List of QC work instructions |
| Work instructions and procedures | Gauge control regulations | DOCX | Gauge control regulations (use together with the gauge handbook) |
| Work instructions and procedures | Gauge loan rules | DOCX | Rules for loaning and returning gauges |
| Work instructions and procedures | 2024 Foreign Trade Dept — QC job responsibilities (revision B) | XLSX | QC job description for the foreign trade department |
| Work instructions and procedures | Production drawing and review (revision B) | DOCX | Drawing, review and release process for production drawings |
3. Quick reference list of common GB standards
| Standard | Title | Related pages in this project |
|---|---|---|
| GB/T 1800.1 | Limits and fits — fundamentals (standard tolerances, fundamental deviations) | Tolerance Quick Reference |
| GB/T 1804 | General tolerances — linear and angular dimensions without individual tolerance indications | Tolerance Quick Reference |
| GB/T 3177 | Inspection of plain workpiece sizes (safety margin and acceptance limits) | Gauge Management Handbook · section 9 |
| GB/T 1182 | Geometrical tolerancing — form, orientation, location and run-out | GD&T Explained: Q&A |
| GB/T 1184 | Geometrical tolerances — values without individual tolerance indications | GD&T Explained: Q&A |
| GB/T 1958 | Geometrical tolerances — inspection and verification | GD&T Explained: Q&A |
| GB/T 16671 | Maximum material requirement, least material requirement and reciprocity requirement | GD&T Explained: Q&A |
| GB/T 324 | Weld symbol representation | Weld Symbol Reference |
| GB/T 5185 | Process numbers for welding and allied processes | Weld Symbol Reference |
| GB/T 196 / 197 | Metric threads — basic dimensions / tolerances | Thread Types and Inspection |
| GB/T 3934 | Technical conditions for metric thread gauges | Thread Types and Inspection |
| JJG 30 / JJG 21 | Verification regulations for calipers / micrometers | Gauge Management Handbook · section 4 |
| GB/T 699 | Quality carbon structural steels — grades, composition and mechanical properties | Materials / Heat Treatment |
| GB/T 3077 | Alloy structural steels — grades, composition and mechanical properties | Materials / Heat Treatment |
| GB/T 1222 | Spring steels — grades and properties | Materials / Heat Treatment |
| GB/T 230.1 | Metallic materials — Rockwell hardness test (scales A/B/C) | Heat Treatment · section 6 |
| GB/T 231.1 | Metallic materials — Brinell hardness test | Heat Treatment · section 6 |
| GB/T 4340.1 | Metallic materials — Vickers hardness test (HV, essential for thin and case-hardened layers) | Heat Treatment · section 6 |
| GB/T 9450 | Determination and verification of the effective case depth of carburized and hardened steel parts (550HV1 criterion) | Heat Treatment · section 4 |
| GB/T 11354 | Determination of nitrided case depth and metallographic examination of iron and steel parts | Heat Treatment · section 4 |
| GB/T 224 | Determination of the decarburization depth of steel | Heat Treatment · section 7 |
| GB/T 6394 | Determination of the average grain size of metals | Heat Treatment · section 7 |
| GB/T 6414 | Castings — dimensional tolerances, geometrical tolerances and machining allowances | Process Selection · section 6 |
| GB/T 12362 | Steel die forgings — tolerances and machining allowances | Process Selection · section 6 |
| GB/T 13914 | Dimensional tolerances for stamped parts | Process Selection · section 6 |
| GB/T 13320 | Metallographic rating charts and rating method for steel die forgings | Process Selection · section 5 |
4. How to use this page
- Each document on file is a separate item in the library — click a title above to open the original online.
- Send new standards to me and I will file them and register them on this page; please state the edition year when you send them, so old and new editions are not mixed.
- Standards update notice: EN ISO 11199-1 has replaced the 1999 edition — design documents that cite the old number need a change review.
Note: the data on the quick reference pages is excerpted for everyday lookups. For design freeze and arbitration, use the official text of the standard.