GB/T 18033-2017 in English
VALIDSeamless copper tubes for water and gas
- Issued on:2017-07-12
- Implemented on:2018-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$194.00
| Standard No: | GB/T 18033-2017 |
| Document status: | VALID |
| Title in English: | Seamless copper tubes for water and gas |
| Title in Chinese: | 无缝铜水管和铜气管 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-07-12 |
| Implemented on: | 2018-04-01 |
| Superseding: |
GB/T 18033-2007 Seamless copper tubes for water and gas
|
| ICS Classification: | 77.150.30-Copper products |
| Chinese Classification: | H62-Heavy metals and their alloys |
| Professional Classification: | GB-National Standard |
| Related Keywords: | seamless copper water pipe
seamless copper tubes copper gas gas introduction in-depth interpretation wall thickness nominal diameter dn/mm tp1 drawn |
| Related Topics: | trachea
Water pipe standard copper pipe dn25 copper tube water pipe Copper Standard astm seamless copper pipe seamless copper Seamless copper water pipe gb/t18033 Food grade copper tube copper GBT18033 GB/T 18033-2000 GB/T 18033-2007 GB/T 18033-2017 Seamless refrigerant copper tube gb/t 18033 gbt18033- |
《GB/T 18033-2017无缝铜水管和铜气管》由TC243（全国有色金属标准化技术委员会）归口，TC243SC2（全国有色金属标准化技术委员会重金属分会）执行，主管部门为中国有色金属工业协会。
Introduction
In-depth interpretation of GB/T 18033—2017 Seamless copper water pipe and copper gas pipe
Standard update and background analysis
This standard replaces GB/T 18033—2007, adds TU1, TU3 and TP1 grades, and revise the representation of status codes. The main changes include:
- Nominal size is changed to Nominal diameter
- The provisions for pipe roundness are added
- The requirements for wall thickness tolerance are increased. The wall thickness tolerance of pipes with a wall thickness greater than 3.5mm is adjusted from 15% to 12%
| Grade | State | Specification/mm | Permissible deviation of wall thickness | Nominal diameter DN/mm |
|---|---|---|---|---|
| TP1 | Drawn (hard) state (H80), lightly drawn (H55) | Outer diameter 6~325, wall thickness 0.6~8 | ±0.08 (12% of nominal wall thickness) | DN6~DN325 |
| TU1 | Softened annealing state (O60), light annealing state (O50) | Outer diameter 6~108, wall thickness 0.6~8 | ±0.06 (12% of nominal wall thickness) | DN6~DN108 |
Technical performance and application cases
Based on Take>TP2 as an example, its tensile strength in the drawing (hard) state is not less than 315MPa, which is suitable for high-pressure water and gas delivery systems. In practical applications, it is necessary to select the appropriate wall thickness deviation level according to the nominal diameter.
Inspection and implementation suggestions
To ensure product quality:
- Chemical composition detection: conduct arbitration analysis according to GB/T5121
- Mechanical property test: adopt GB/T228.1 standard, select S7 or S1, S2 specimens
- Non-destructive test: Eddy current flaw detection is recommended (wall thickness ≤3mm)
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