Common Specifications and Weight Reference

The weight per meter of hollow anchor bolts varies considerably depending on their specifications.
Below are approximate references for some common models:
25 mm diameter, 5 mm wall thickness: Approx. 3.8 kg/m
28 mm diameter, 5.5 mm wall thickness: Approx. 4.3 kg/m
30 mm diameter, 6 mm wall thickness: Approx. 5.2 kg/m
32 mm diameter, 6.5 mm wall thickness: Approx. 6 kg/m

Time：02/07/2026 16:40:12

The nominal wall thickness of a 25mm hollow anchor bolt is typically 5mm (often marked as Φ25×5), which is the most common configuration in railway and national standard engineering projects.
The national standard GB 50086-2015 requires that the wall thickness of hollow grouting anchor bolts should not be less than 5.0mm. This means that 5.0mm is the minimum requirement, and the actual product wall thickness can be higher.

Time：01/07/2026 16:28:34

Answers

• 
  How to inspect and accept NM400 when purchasing it? 22/07/2026 05:38:01
• 
  What is the difference between anti-corrosion coatings and rust-preventive oils for steel? 22/07/2026 03:25:14
• 
  What are the common specifications for stainless steel sheets in China? 17/07/2026 04:32:22
• 
  Why are the selection parameters for pull-out anchors so important? 16/07/2026 11:33:16
• 
  Hello, do you have anchor bolts? Could you provide a MTR. what are the yield strength and tensile strength of the anchor bolts? I need traceability for each batch number. 16/07/2026 02:45:07