Q
What outer diameter sizes are available according to this specification table?
A
The specification table covers outer diameters ranging from 200 mm to 1000 mm, offering a broad selection to suit various industrial pipeline and structural applications.
Q
How does the outer diameter tolerance change as the pipe size increases?
A
The outer diameter tolerance increases proportionally with the pipe size. For example, a 200 mm pipe has a tolerance of ±2.0～±3.0 mm, while a 1000 mm pipe allows a wider tolerance of ±12.0～±15.0 mm to account for manufacturing variability at larger scales.
Q
What is the standard wall thickness range for large-diameter pipes (≥700 mm)?
A
For pipes with an outer diameter of 700 mm and above, the standard wall thickness starts from 18 mm and can go up to 45 mm (for 1000 mm OD pipes). Larger diameters require thicker walls to maintain structural integrity and pressure capacity.
Q
Why does the standard length decrease for pipes with larger outer diameters?
A
Larger diameter pipes are significantly heavier and more difficult to handle and transport. For outer diameters of 700–800 mm, the standard length is limited to 1000～1800 mm, and for 900–1000 mm diameters, it is further reduced to 1000～1500 mm to ensure safe logistics and installation.
Q
Can the wall thickness and length be customized beyond the ranges listed in the table?
A
The values listed represent standard specifications. Custom wall thicknesses and lengths outside these ranges may be available depending on the manufacturer's capabilities and the specific project requirements. It is recommended to consult directly with the supplier for non-standard orders.
Q
How should I choose the appropriate wall thickness for my application?
A
Wall thickness selection depends on several factors including operating pressure, temperature, fluid type, and applicable industry standards. As a general rule, higher-pressure or structurally demanding applications require thicker walls. Always refer to relevant engineering standards and consult a qualified engineer when selecting specifications for critical applications.
