GY 65-2010 in English
SUPERSEDEDTechnical requirements of manufacturing steel tower and mast for radio and television
- Issued on:2010-08-04
- Implemented on:2010-08-04
- File Format:PDF
- Delivery:Via email within 1~3 business days
$350.00
| Standard No: | GY 65-2010 |
| Document status: | SUPERSEDED |
| Superseded by: |
GY/T 65-2021 Technical requirements of manufacturing steel tower and mast for radio and television
|
| Title in English: | Technical requirements of manufacturing steel tower and mast for radio and television |
| Title in Chinese: | 广播电视钢塔桅制造技术条件 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2010-08-04 |
| Implemented on: | 2010-08-04 |
| Professional Classification: | GY-Radio, Film and TV |
| Related Keywords: | technical requirements
steel tower ultrasonic flaw detection key manufacturing technology requirements material control specifications new tolerance indicators steel plate steel use |
| Related Topics: | tower
broadcasting standard ansi/vita 65-2010 Broadcasting Broadcasting Manufacturing Technology Manufacturing Technology Radio and Television Fourteenth Five-Year Stress Manufacturing Technology Manufacturing technical conditions State Administration of Radio, Film and Television |
本标准规定了广播电视钢塔及桅杆制造过程中的技术要求、检验规则、试验方法和包装、标记、运输、贮存要求。
本标准适用于广播塔、电视塔、微波塔、通信塔及桅杆的钢结构制造。
Introduction
Core changes in the standard revision
| Technical dimension | GY 65-1989 | GY 65-2010 | Upgrade points |
|---|---|---|---|
| Tolerance control | Basic tolerance system | 12 new tolerance indicators | Steel plate cutting slope tolerance is refined into 3 levels |
| Welding specification | Refer to industry practice | Align with GB 50205-2001 | Add welding procedure qualification requirements |
| Inspection items | 23 items | 42 items | 19 new tests including ultrasonic flaw detection |
Key manufacturing technology requirements
Material control specifications
Article 4.1 of the standard clearly requires that Z-direction performance steel plates with a thickness of ≥40mm must be re-inspected, and imported steel materials must provide a chemical composition analysis report. In actual applications, a 380-meter TV tower project used Japanese SN490B steel, and an additional -40℃ low-temperature impact test was added.
Welding quality control
According to Article 4.11.5, the main welds of the radio and television transmission tower must meet the following requirements:
- 100% ultrasonic testing for first-level welds
- 20% random inspection ratio for second-level welds
- Dimension deviation of fillet weld leg ≤0~3mm
Project implementation suggestions
Manufacturing process control
- Establish a material traceability system to record the furnace batch number and use location of each batch of steel
- Use a three-coordinate measuring instrument to review the flange flatness
- Welding environment monitoring must meet the following requirements: temperature＞5℃, humidity＜90%, wind speed≤level 4
Key points for quality acceptance
| Key indicators | Allowance deviation | Detection tools |
|---|---|---|
| Roundness of steel pipe | ≤d/500 and ±5mm | Electronic calliper |
| Flange bolt hole distance | ±0.7mm | Image measuring instrument |
| Galvanized layer adhesion | No falling off by hammering | Standard test hammer |
Technical development background
This standard revision responds to three major industry needs:
- Adapt to the development of super-high-rise tower mast structures (such as 600m+ TV towers)
- Interface with international welding standards (ISO 3834 system)
- Solve the problem of coastal corrosion protection (new GY 64 supporting standards)
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GY/T 114-1994 in English
General technical requirements for cable TV scrambling and descrambling system
1994-06-03 -
GY/T 112-1993 in English
Technical conditions for acousto-optic effects in projection rooms for appraisal of movies
1991-12-01
